Todd Walter
Professor (Research) of Aeronautics and Astronautics
Web page: https://gps.stanford.edu/people/todd-walter
Bio
I am the director of the wide-area differential Global Navigation Satellite System(GNSS) laboratory at Stanford University. My work focuses on implementing high-integrity air navigation systems. I am also active in the international standards bodies coordinating the use of GNSS to implement these systems.
Honors & Awards
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Leadership Award in Signal Design, GPS World Magazine (September, 2015)
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Distinguished Service Award, Institute of Navigation (January, 2012)
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Kepler Award, Institute of Navigation (September, 2010)
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Thurlow Award, Institute of Navigation (January, 2008)
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Fellow of the ION, Institute of Navigation (June, 2006)
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Early Achievement Award, Institute of Navigation (June, 2000)
Boards, Advisory Committees, Professional Organizations
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Member, National Space-Based Positioning, Navigation, and Timing Advisory Board (2019 - Present)
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Member, IEEE (2014 - Present)
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President, Institute of Navigation (2010 - 2012)
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Member, Institute of Navigation (1994 - Present)
Professional Education
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Ph.D., Stanford University, Applied Physics (1994)
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M.S., Stanford University, Applied Physics (1990)
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B.S., Rensselaer Polytechnic Institute, Physics (1987)
Current Research and Scholarly Interests
High integrity satellite navigation for guiding aircraft, including satellite based augmentation systems (SBAS) and advanced receiver autonomous integrity monitoring (ARAIM).
2024-25 Courses
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Independent Studies (3)
- Directed Research and Writing in Aero/Astro
AA 190 (Aut, Win, Spr) - Practical Training
AA 291 (Aut, Win, Spr) - Problems in Aero/Astro
AA 290 (Aut, Win, Spr)
- Directed Research and Writing in Aero/Astro
Stanford Advisees
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Doctoral Dissertation Reader (AC)
Keidai Iiyama -
Doctoral Dissertation Advisor (AC)
Jason Anderson, Anargyros Kriezis, Frank Lai, Zixi Liu, Rebecca Wang -
Orals Evaluator
Jason Anderson -
Doctoral (Program)
Jade Babcock-Chi
All Publications
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Determination of Fault Probabilities for ARAIM
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2019; 55 (6): 3505–16
View details for DOI 10.1109/TAES.2019.2909727
View details for Web of Science ID 000507917800066
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An Overview of Advanced Receiver Autonomous Integrity Monitoring (ARAIM)
INST NAVIGATION. 2019: 896–914
View details for DOI 10.33012/2019.16848
View details for Web of Science ID 000475697600075
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Quantum-resistant authentication algorithms for satellite-based augmentation systems
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2019; 66 (1): 199–209
View details for DOI 10.1002/navi.287
View details for Web of Science ID 000462203300016
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Broadband LEO Constellations for Navigation
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2018; 65 (2): 205–20
View details for DOI 10.1002/navi.234
View details for Web of Science ID 000439832100005
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Worldwide Vertical Guidance of Aircraft Based on Modernized GPS and New Integrity Augmentations
PROCEEDINGS OF THE IEEE
2008; 96 (12): 1918-1935
View details for DOI 10.1109/JPROC.2008.2006099
View details for Web of Science ID 000262934800004
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Robust Detection of Ionospheric Irregularities
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2001; 48 (2): 89–100
View details for DOI 10.1002/j.2161-4296.2001.tb00231.x
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Wide area augmentation of the global positioning system
PROCEEDINGS OF THE IEEE
1996; 84 (8): 1063-1088
View details for Web of Science ID A1996UY25000002
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Weighted RAIM for precision approach
8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95)
INST NAVIGATION. 1995: 1995–2004
View details for Web of Science ID A1995BE72A00215
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Authentication Security of Combinatorial Watermarking for GNSS Signal Authentication
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2024; 71 (3)
View details for DOI 10.33012/navi.655
View details for Web of Science ID 001265046100002
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Software Defined Radio for GNSS Radio Frequency Interference Localization.
Sensors (Basel, Switzerland)
2023; 24 (1)
Abstract
The use of radio direction finding techniques in order to identify and reject harmful interference has been a topic of discussion both past and present for signals in the GNSS bands. Advances in commercial off-the-shelf radio hardware have led to the development of new low-cost, compact, phase coherent receiver platforms such as the KrakenSDR from KrakenRF whose testing and characterization will be the primary focus of this paper. Although not specifically designed for GNSSs, the capabilities of this platform are well aligned with the needs of GNSSs. Testing results from both benchtop and in the field will be displayed which verify the KrakenSDR's phase coherence and angle of arrival estimates to array dependent resolution bounds. Additionally, other outputs from the KrakenSDR such as received signal strength indicators and the angle of arrival confidence values show strong connections to angle of arrival estimate quality. Within this work the testing that will be primarily presented is at 900 MHz, with results presented from a government-sponsored event where the Kraken was tested at 1575.42 MHz. Finally, a discussion of calibration of active antenna arrays for angle of arrival is included as the introduction of active antenna elements used in GNSS signal collection can influence angle of arrival estimation.
View details for DOI 10.3390/s24010072
View details for PubMedID 38202934
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Calibration of RFI Detection Levels in a Low-Cost GNSS Monitor
IEEE. 2023: 520-535
View details for DOI 10.1109/PLANS53410.2023.10140085
View details for Web of Science ID 001022344800061
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An Evaluation of the Advanced RAIM Threat Model
IEEE. 2023: 408-413
View details for DOI 10.1109/PLANS53410.2023.10139928
View details for Web of Science ID 001022344800049
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WAAS and the Ionosphere - A Historical Perspective: Monitoring Storms
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2022; 69 (1)
View details for DOI 10.33012/navi.503
View details for Web of Science ID 000790870400004
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Authentication of Satellite-Based Augmentation Systems with Over-the-Air Rekeying Schemes
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2022; 70 (3)
View details for DOI 10.33012/navi.595
View details for Web of Science ID 001046442800006
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A Framework for GNSS Spoofing Detection Through Combinations of Metrics
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2021; 57 (6): 3633-3647
View details for DOI 10.1109/TAES.2021.3082673
View details for Web of Science ID 000725819700010
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GNSS spoofing detection through spatial processing
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2021
View details for DOI 10.1002/navi.420
View details for Web of Science ID 000647529400001
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Performance of 6 Different Global Navigation Satellite System Receivers at Low Latitude Under Moderate and Strong Scintillation
EARTH AND SPACE SCIENCE
2021; 8 (2)
View details for DOI 10.1029/2020EA001314
View details for Web of Science ID 000624393800005
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Fast Protection Levels for Fault Detection With an Application to Advanced RAIM
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2021; 57 (1): 55–65
View details for DOI 10.1109/TAES.2020.3011997
View details for Web of Science ID 000617426500005
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GNSS Spoofing Mitigation in the Position Domain
INST NAVIGATION. 2021: 42-55
View details for DOI 10.33012/2021.17824
View details for Web of Science ID 000671019900005
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Ionospheric Scintillation Effects on Satellite Navigation
IONOSPHERE DYNAMICS AND APPLICATIONS
2021; 260: 493-510
View details for DOI 10.1002/9781119815617.ch20
View details for Web of Science ID 000852623000021
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Message Authentication Candidates for the SBAS Dual Frequency Multi-Constellation Standard
INST NAVIGATION. 2021: 443-452
View details for DOI 10.33012/2021.17892
View details for Web of Science ID 000874785700023
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Developing a Practical GNSS Spoofing Detection Thresholds for Receiver Power Monitoring
INST NAVIGATION. 2021: 803-815
View details for DOI 10.33012/2021.17931
View details for Web of Science ID 000874785700044
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A FAULT DETECTION AND EXCLUSION ESTIMATOR DESIGNED FOR INTEGRITY
INST NAVIGATION. 2021: 1672-1686
View details for DOI 10.33012/2021.17954
View details for Web of Science ID 000874785701044
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GNSS Interference Detection Using Machine Learning Algorithms on ADS-B Data
INST NAVIGATION. 2021: 4305-4315
View details for DOI 10.33012/2021.18111
View details for Web of Science ID 000874785704028
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Analysis of GNSS Constellation Performance for Advanced RAIM
INST NAVIGATION. 2021: 1410-1434
View details for DOI 10.33012/2021.18148
View details for Web of Science ID 000874785701029
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SBAS Message Schemes to Support Inline Message Authentication
INST NAVIGATION. 2021: 474-484
View details for DOI 10.33012/2021.17908
View details for Web of Science ID 000874785700025
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Ground Monitoring to Support ARAIM for Military Users: Alternatives for Rapid and Rare Update Rates
INST NAVIGATION. 2021: 1481-1507
View details for DOI 10.33012/2021.18159
View details for Web of Science ID 000874785701033
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Adopting Neural Networks in GNSS-IMU integration: A Preliminary study
IEEE. 2021
View details for DOI 10.1109/DASC52595.2021.9594430
View details for Web of Science ID 000739652600131
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Reevaluating the Message Loss Rate of the Wide Area Augmentation System (WAAS) in Flight
INST NAVIGATION. 2021: 218-228
View details for DOI 10.33012/2021.17819
View details for Web of Science ID 000671019900018
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SBAS message authentication: a review of protocols, figures of merit and standardization plans
INST NAVIGATION. 2021: 111-124
View details for DOI 10.33012/2021.17829
View details for Web of Science ID 000671019900010
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Investigation into September 2020 GPS SVN 74 Performance Anomaly
INST NAVIGATION. 2021: 189-200
View details for DOI 10.33012/2021.17818
View details for Web of Science ID 000671019900015
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Assessment of Ionospheric Correction Behavior for Use with Precise Point Positioning (PPP)
INST NAVIGATION. 2021: 616-624
View details for DOI 10.33012/2021.17853
View details for Web of Science ID 000671019900048
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ARAIM for Military Users: ISM Parameters, Constellation-Check Procedure and Performance Estimates
INST NAVIGATION. 2021: 173-188
View details for DOI 10.33012/2021.17812
View details for Web of Science ID 000671019900014
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GAUSSIAN BOUNDING IMPROVEMENTS AND AN ANALYSIS OF THE BIAS-SIGMA TRADEOFF FOR GNSS INTEGRITY
INST NAVIGATION. 2021: 703-713
View details for DOI 10.33012/2021.17861
View details for Web of Science ID 000671019900056
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GNSS Spoofing Detection through Metric Combinations: Calibration and Application of a general Framework
INST NAVIGATION. 2021: 4249-4263
View details for DOI 10.33012/2021.18126
View details for Web of Science ID 000874785704024
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Providing Continuity and Integrity in the Presence of GNSS Spoofing
INST NAVIGATION. 2021: 1828-1842
View details for DOI 10.33012/2021.17984
View details for Web of Science ID 000874785701053
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An Assessment of GPS Spoofing Detection Via Radio Power and Signal Quality Monitoring for Aviation Safety Operations
IEEE INTELLIGENT TRANSPORTATION SYSTEMS MAGAZINE
2020; 12 (3): 136–46
View details for DOI 10.1109/MITS.2020.2994117
View details for Web of Science ID 000552261600009
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Receiver States for SBAS Data Authentication
INST NAVIGATION. 2020: 1059–69
View details for DOI 10.33012/2020.17197
View details for Web of Science ID 000544820300074
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BOUNDING TEMPORALLY CORRELATED MEASUREMENT NOISE WITH AN APPLICATION TO GNSS INTEGRITY
INST NAVIGATION. 2020: 27-38
View details for DOI 10.33012/2020.17549
View details for Web of Science ID 000632603500002
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Characterization of ADS-B Performance under GNSS Interference
INST NAVIGATION. 2020: 3581-3591
View details for DOI 10.33012/2020.17675
View details for Web of Science ID 000632603503044
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Independent Time Synchronization for Resilient GNSS Receivers
INST NAVIGATION. 2020: 964–78
View details for DOI 10.33012/2020.17190
View details for Web of Science ID 000544820300067
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Stress Testing Advanced RAIM Airborne Algorithms
INST NAVIGATION. 2020: 421–39
View details for DOI 10.33012/2020.17153
View details for Web of Science ID 000544820300026
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Evaluating the Application of PPP Techniques to ARAIM Using Flight Data
INST NAVIGATION. 2020: 379–85
View details for DOI 10.33012/2020.17151
View details for Web of Science ID 000544820300023
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Design and analysis of a public key infrastructure for SBAS data authentication
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2019; 66 (4): 831–44
View details for DOI 10.1002/navi.338
View details for Web of Science ID 000507100800010
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Gaussian Bounds of Sample Distributions for Integrity Analysis
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2019; 55 (4): 1806–15
View details for DOI 10.1109/TAES.2018.2876583
View details for Web of Science ID 000480348800017
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Signal Deformation Monitoring for Anomalous Multipath Threats
INST NAVIGATION. 2019: 1023–30
View details for DOI 10.33012/2019.16853
View details for Web of Science ID 000475697600084
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Development of Advanced RAIM Minimum Operational Performance Standards
INST NAVIGATION. 2019: 1381–91
View details for DOI 10.33012/2019.16904
View details for Web of Science ID 000568618901029
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SBAS Data Authentication: A Concept of Operations
INST NAVIGATION. 2019: 1812–23
View details for DOI 10.33012/2019.17086
View details for Web of Science ID 000568618901056
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Integrity for Tightly Coupled PPP and IMU
INST NAVIGATION. 2019: 3066–78
View details for DOI 10.33012/2019.17011
View details for Web of Science ID 000568618903010
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Going Back for the Future: Large/Mega LEO Constellations for Navigation
INST NAVIGATION. 2019: 2452–68
View details for DOI 10.33012/2019.17123
View details for Web of Science ID 000568618902065
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Increasing International Civil Aviation Resilience: A Proposal for Nomenclature, Categorization and Treatment of New Interference Threats
INST NAVIGATION. 2019: 389–407
View details for DOI 10.33012/2019.16699
View details for Web of Science ID 000542920400028
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SBAS Corrections for PPP Integrity with Solution Separation
INST NAVIGATION. 2019: 707–19
View details for DOI 10.33012/2019.16739
View details for Web of Science ID 000542920400055
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Development and Evaluation of Airborne Multipath Error Bounds for L1-L5
INST NAVIGATION. 2019: 53–61
View details for DOI 10.33012/2019.16735
View details for Web of Science ID 000542920400003
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Reducing Computational Load in Solution Separation for Kalman Filters and an Application to PPP Integrity
INST NAVIGATION. 2019: 720–29
View details for DOI 10.33012/2019.16721
View details for Web of Science ID 000542920400056
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Safety Analysis of Ranging Biases on the WAAS GEOs
INST NAVIGATION. 2019: 113–30
View details for DOI 10.33012/2019.16679
View details for Web of Science ID 000542920400008
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Paper Trends in ION Conferences from 2007-2018
INST NAVIGATION. 2019: 340–48
View details for DOI 10.33012/2019.16790
View details for Web of Science ID 000475697600025
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Design and Analysis of a Public Key Infrastructure for SBAS Data Authentication
INST NAVIGATION. 2019: 964–88
View details for DOI 10.33012/2019.16852
View details for Web of Science ID 000475697600080
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Lower Bounds in Optimal Integrity Monitoring
INST NAVIGATION. 2019: 915–24
View details for DOI 10.33012/2019.16788
View details for Web of Science ID 000475697600076
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SIS Monitoring for ARAIM in the Absence of Precise Clock Estimates
INST NAVIGATION. 2019: 785–801
View details for DOI 10.33012/2019.16838
View details for Web of Science ID 000475697600065
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Standards for ARAIM ISM Data Analysis
INST NAVIGATION. 2019: 777–84
View details for DOI 10.33012/2019.16837
View details for Web of Science ID 000475697600064
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WAAS at 15
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2018; 65 (4): 581–600
View details for DOI 10.1002/navi.252
View details for Web of Science ID 000454313700007
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Validation of the Unfaulted Error Bounds for ARAIM
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2018; 65 (1): 117–33
View details for Web of Science ID 000428524500010
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Effective GPS Spoofing Detection Utilizing Metrics from Commercial Receivers
INST NAVIGATION. 2018: 672–89
View details for Web of Science ID 000436563900052
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Spoofing Detection for Airborne GNSS Equipment
INST NAVIGATION. 2018: 1350–68
View details for DOI 10.33012/2018.16008
View details for Web of Science ID 000545000101024
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Design and evaluation of integrity algorithms for PPP in kinematic applications
INST NAVIGATION. 2018: 1910–39
View details for DOI 10.33012/2018.15972
View details for Web of Science ID 000545000101065
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A Proposed Concept of Operations for Advanced Receiver Autonomous Integrity Monitoring
INST NAVIGATION. 2018: 1084–90
View details for DOI 10.33012/2018.15934
View details for Web of Science ID 000545000101007
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Parameter Selection for the TESLA Keychain
INST NAVIGATION. 2018: 2155–71
View details for DOI 10.33012/2018.15852
View details for Web of Science ID 000545000102014
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Effect of Aircraft Banking on ARAIM Performance
INST NAVIGATION. 2018: 2632–41
View details for DOI 10.33012/2018.16027
View details for Web of Science ID 000545000102046
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GNSS Multipath Error Modeling for Automotive Applications
INST NAVIGATION. 2018: 1573–89
View details for DOI 10.33012/2018.16107
View details for Web of Science ID 000545000101039
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Ionospheric Rates of Change
INST NAVIGATION. 2018: 4158–70
View details for DOI 10.33012/2018.16112
View details for Web of Science ID 000545000104021
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Fixed Subset Selection to Reduce Advanced RAIM Complexity
INST NAVIGATION. 2018: 88–98
View details for Web of Science ID 000436563900008
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WASS at 15
INST NAVIGATION. 2018: 301–21
View details for Web of Science ID 000436563900026
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Quantum Resistant Authentication Algorithms for Satellite-Based Augmentation Systems
INST NAVIGATION. 2018: 365–79
View details for Web of Science ID 000436563900030
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A Formula for Solution Separation without Subset Solutions for Advanced RAIM
IEEE. 2018: 316–26
View details for Web of Science ID 000435257800042
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GNSS Multipath Detection in Urban Environment Using 3D Building Model
IEEE. 2018: 1053–58
View details for Web of Science ID 000435257800131
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Protection Levels after Fault Exclusion for Advanced RAIM
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2017; 64 (4): 505–13
View details for DOI 10.1002/navi.210
View details for Web of Science ID 000418762800007
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Improved User Position Monitor for WAAS
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2017; 64 (1): 165–75
View details for DOI 10.1002/navi.180
View details for Web of Science ID 000403758600012
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Theoretical Results on the Optimal Detection Statistics for Autonomous Integrity Monitoring
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2017; 64 (1): 123–37
View details for DOI 10.1002/navi.175
View details for Web of Science ID 000403758600009
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Feasibility of fault exclusion related to advanced RAIM for GNSS spoofing detection
INST NAVIGATION. 2017: 2359–70
View details for Web of Science ID 000419292302029
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Characterization of GLONASS Broadcast Clock and Ephemeris: Nominal Performance and Fault Trends for ARAIM
INST NAVIGATION. 2017: 170–83
View details for Web of Science ID 000405076700013
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Catalog and Description of GPS and WAAS L1 C/A Signal Deformation Events
INST NAVIGATION. 2017: 508–20
View details for Web of Science ID 000405076700036
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Validation of the Unfaulted Error Bounds for ARAIM
INST NAVIGATION. 2017: 1–19
View details for DOI 10.33012/2017.15047
View details for Web of Science ID 000542915000001
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The Benefit of Low Cost Accelerometers for GNSS Anti-Spoofing
INST NAVIGATION. 2017: 775–96
View details for DOI 10.33012/2017.15109
View details for Web of Science ID 000542915000058
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WAAS Signal Deformation Monitor Performance: Beyond the ICAO Threat Model
INST NAVIGATION. 2017: 713–24
View details for DOI 10.33012/2017.15103
View details for Web of Science ID 000542915000053
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A MATLAB Toolset to Determine Strict Gaussian Bounding Distributions of a Sample Distribution
INST NAVIGATION. 2017: 4236–47
View details for Web of Science ID 000419292304023
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Multi-GNSS Constellation Anomaly Detection and Performance Monitoring
INST NAVIGATION. 2017: 1051–62
View details for Web of Science ID 000419292301006
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Orbital representations for the next generation of satellite-based augmentation systems
GPS SOLUTIONS
2016; 20 (4): 737-750
View details for DOI 10.1007/s10291-015-0485-x
View details for Web of Science ID 000384421600013
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Preliminary availability assessment to support single-frequency SBAS development in the Korean region
GPS SOLUTIONS
2016; 20 (3): 299-312
View details for DOI 10.1007/s10291-016-0522-4
View details for Web of Science ID 000378539400001
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Leveraging Commercial Broadband LEO Constellations for Navigation
INST NAVIGATION. 2016: 2300–2314
View details for Web of Science ID 000391479502030
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Improved Ephemeris Monitoring for GNSS
INST NAVIGATION. 2016: 600–608
View details for Web of Science ID 000379864100059
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Determination of Fault Probabilities for ARAIM
IEEE. 2016: 451–61
View details for Web of Science ID 000389021800060
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Improved User Position Monitor for WAAS
INST NAVIGATION. 2016: 343–52
View details for Web of Science ID 000379864100030
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Mitigation of short duration satellite outages for Advanced RAIM and other integrity systems based on GNSS
INST NAVIGATION. 2016: 1688–95
View details for Web of Science ID 000391479501067
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A Simple Satellite Exclusion Algorithm for Advanced RAIM
INST NAVIGATION. 2016: 239–44
View details for Web of Science ID 000379864100020
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Demonstrating ARAIM on UAS using Software Defined Radio and Civilian Signal GPS L1/L2C and GLONASS G1/G2
INST NAVIGATION. 2016: 231–38
View details for Web of Science ID 000379864100019
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Satellite Selection for Multi-Constellation SBAS
INST NAVIGATION. 2016: 1350–59
View details for Web of Science ID 000391479501038
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GNSS Integrity in The Arctic
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2016; 63 (4): 469-492
View details for Web of Science ID 000397681800008
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A Simple Position Estimator That Improves Advanced RAIM Performance
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2015; 51 (3): 2485-U960
View details for DOI 10.1109/TAES.2015.140674
View details for Web of Science ID 000362015800070
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GNSS Multipath and Jamming Mitigation Using High-Mask-Angle Antennas and Multiple Constellations
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
2015; 16 (2): 741-750
View details for DOI 10.1109/TITS.2014.2342200
View details for Web of Science ID 000352282500018
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Aviation Benefits from Satellite Navigation
NEW SPACE
2015; 3 (1): 19–35
View details for DOI 10.1089/space.2014.0011
View details for Web of Science ID 000355562700004
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Baseline Advanced RAIM User Algorithm and Possible Improvements
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2015; 51 (1): 713-732
View details for DOI 10.1109/TAES.2014.130739
View details for Web of Science ID 000352700900055
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GNSS Integrity in The Arctic
INST NAVIGATION. 2015: 1726–40
View details for Web of Science ID 000375211601050
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Progress on Working Group-C Activities on Advanced RAIM
INST NAVIGATION. 2015: 629–38
View details for Web of Science ID 000375211600044
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Validating Nominal Bias Error Limits Using 4 years of WAAS Signal Quality Monitoring Data
INST NAVIGATION. 2015: 956–63
View details for Web of Science ID 000365398300083
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GPS Multi-Frequency Carrier Phase Characterization During Strong Equatorial Ionospheric Scintillation
INST NAVIGATION. 2015: 3787–96
View details for Web of Science ID 000375211603086
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A Comparative Study of Triple Frequency GPS Scintillation Signal Amplitude Fading Characteristics at Low Latitudes
INST NAVIGATION. 2015: 3819–25
View details for Web of Science ID 000375211603089
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Fast Multiple Fault Exclusion with a Large Number of Measurements
INST NAVIGATION. 2015: 696–701
View details for Web of Science ID 000365040300074
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Characterization of GPS Clock and Ephemeris Errors to Support ARAIM
INST NAVIGATION. 2015: 920–31
View details for Web of Science ID 000365398300080
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Airborne Mitigation Of Constellation Wide Faults
INST NAVIGATION. 2015: 676–86
View details for Web of Science ID 000365040300072
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Future Dual-Frequency GPS Navigation System for Intelligent Air Transportation Under Strong Ionospheric Scintillation
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
2014; 15 (5): 2224-2236
View details for DOI 10.1109/TITS.2014.2311590
View details for Web of Science ID 000343002400032
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The Effect of Nominal Signal Deformations on ARAIM Users
International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2014: 56–67
View details for Web of Science ID 000339630900003
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Architectures for Advanced RAIM: Offline and Online
INST NAVIGATION. 2014: 787–804
View details for Web of Science ID 000356331201004
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Crowdsourcing Arctic Navigation Using Multispectral Ice Classification & GNSS
PROCEEDINGS OF THE 27TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS 2014)
2014: 707-721
View details for Web of Science ID 000356331201001
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Scintillation Characterization for WAAS in the Auroral Region
INST NAVIGATION. 2014: 1126–37
View details for Web of Science ID 000356331201036
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Single Antenna GPS Spoof Detection that is Simple, Static, Instantaneous and Backwards Compatible for Aerial Applications
INST NAVIGATION. 2014: 2233–42
View details for Web of Science ID 000356331203017
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Mitigation of Nominal Signal Deformations on Dual-Frequency WAAS Position Errors
INST NAVIGATION. 2014: 3129–47
View details for Web of Science ID 000356331204023
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VPL Parameter Determination for Improved Performance of Advanced RAIM
INST NAVIGATION. 2014: 3566–74
View details for Web of Science ID 000356331205013
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Experimentally Recorded Amplitude and Phase Scintillation through a Spirent Simulator
INST NAVIGATION. 2014: 1108–14
View details for Web of Science ID 000356331201034
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Evaluation of a covariance-based clock and ephemeris error bounding algorithm for SBAS
INST NAVIGATION. 2014: 3270–76
View details for Web of Science ID 000356331204038
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Exclusion for Advanced RAIM: Requirements and a Baseline Algorithm
International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2014: 99–107
View details for Web of Science ID 000339630900007
-
Effects of solar cycle 24 activity onWAAS navigation
SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
2014; 12 (1): 46-63
View details for DOI 10.1002/2013SW000982
View details for Web of Science ID 000331551300006
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Reduced Subset Analysis for Multi-Constellation ARAIM
International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2014: 89–98
View details for Web of Science ID 000339630900006
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Development of a Real-time GNSS Software Receiver for Evaluating RAIM in Multi-constellation
International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2014: 525–533
View details for Web of Science ID 000339630900053
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DME/TACAN interference mitigation for GNSS: algorithms and flight test results
GPS SOLUTIONS
2013; 17 (4): 561-573
View details for DOI 10.1007/s10291-012-0301-9
View details for Web of Science ID 000324246700011
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Critical Elements for a Multi-Constellation Advanced RAIM
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2013; 60 (1): 53-69
View details for DOI 10.1002/navi.29
View details for Web of Science ID 000339565800005
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Incorporating GLONASS into Aviation RAIM Receivers
International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2013: 239–249
View details for Web of Science ID 000327063800022
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Advanced RAIM System Architecture with a Long Latency Integrity Support Message
INST NAVIGATION. 2013: 2605–13
View details for Web of Science ID 000375213002056
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Evolution of SBAS: Two Frequencies & Multiple Constellations
INST NAVIGATION. 2013: 2394–2439
View details for Web of Science ID 000375213002038
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Qualifying an L5 SBAS MOPS Ephemeris Message to Support Multiple Orbit Classes
INST NAVIGATION. 2013: 825–43
View details for Web of Science ID 000375213000078
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Dual Frequency SBAS Trial and Preliminary Results for East-Asia Region
INST NAVIGATION. 2013: 912–20
View details for Web of Science ID 000375213000085
-
The Influence of the Ionosphere on SBAS
INST NAVIGATION. 2013: 2373–93
View details for Web of Science ID 000375213002037
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Constructing Ionospheric Irregularity Threat Model for Korean SBAS
INST NAVIGATION. 2013: 296–306
View details for Web of Science ID 000327064500027
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Implementation of the L5 SBAS MOPS
INST NAVIGATION. 2013: 814–24
View details for Web of Science ID 000375213000077
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Optimal Positioning for Advanced Raim
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2013; 60 (4): 279-289
View details for DOI 10.1002/navi.49
View details for Web of Science ID 000339567500003
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Near Term Improvements to WAAS Availability
International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2013: 71–77
View details for Web of Science ID 000327063800003
-
L1/L5 SBAS MOPS Ephemeris Message to Support Multiple Orbit Classes
International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2013: 78–92
View details for Web of Science ID 000327063800004
-
Signal Deformation Monitoring for Dual-Frequency WAAS
International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2013: 93–106
View details for Web of Science ID 000327063800005
-
Results on the Optimal Detection Statistic for Integrity Monitoring
International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2013: 262–273
View details for Web of Science ID 000327063800024
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Overcoming RFI with High Mask Angle Antennas and Multiple GNSS Constellations
INST NAVIGATION. 2013: 3433–42
View details for Web of Science ID 000375213003038
-
GPS Signal-in-Space Integrity Performance Evolution in the Last Decade
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2012; 48 (4): 2932-2946
View details for Web of Science ID 000309865600010
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Satellite Navigation for Aviation in 2025
PROCEEDINGS OF THE IEEE
2012; 100: 1821-1830
View details for DOI 10.1109/JPROC.2012.2190154
View details for Web of Science ID 000309838000063
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Statistical Characterization of GLONASS Broadcast Clock Errors and Signal-In-Space Errors
International Technical Meeting (ITM) of the Institute-of-Navigation (ION)
INST NAVIGATION. 2012: 1697–1707
View details for Web of Science ID 000317865600087
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The impact the lonosphere on GNSS Aufmentation
INST NAVIGATION. 2012: 1070–78
View details for Web of Science ID 000327163301008
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GLONASS Signal-in-Space Anomalies Since 2009
25th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation
INST NAVIGATION. 2012: 833–842
View details for Web of Science ID 000327163300079
-
L1/L5 SBAS MOPS to Support Multiple Constellations
25th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation
INST NAVIGATION. 2012: 1287–1297
View details for Web of Science ID 000327163301028
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Evaluation of Multi-Constellation Advanced RAIM for Vertical Guidance using GPS and GLONASS Signals with Multiple Faults
25th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation
INST NAVIGATION. 2012: 884–892
View details for Web of Science ID 000327163300084
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A Framework for Analyzing Architectures that Support ARAIM
25th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation
INST NAVIGATION. 2012: 2850–2857
View details for Web of Science ID 000327163302072
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Automated Verification of Potential GPS Signal-In-Space Anomalies Using Ground Observation Data
IEEE/ION Position Location and Navigation Symposium (PLANS)
IEEE. 2012: 1111–1118
View details for Web of Science ID 000309273900138
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Evolving WAAS to Serve L1/L5 Users
NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION
2012; 59 (4): 317-327
View details for DOI 10.1002/navi.21
View details for Web of Science ID 000209006500006
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Advanced RAIM User Algorithm Description: Integrity Support Message Processing, Fault Detection, Exclusion, and Protection Level Calculation
25th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation
INST NAVIGATION. 2012: 2828–2849
View details for Web of Science ID 000327163302071
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Measuring Code-Phase Differences due to Inter-Satellite Hardware Differences
25th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation
INST NAVIGATION. 2012: 2150–2158
View details for Web of Science ID 000327163302018
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Impact of Personal Privacy Devices for WAAS Aviation Users
25th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation
INST NAVIGATION. 2012: 235–241
View details for Web of Science ID 000327163300022
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OPTIMAL POSITIONING FOR ADVANCED RAIM
International Technical Meeting (ITM) of the Institute-of-Navigation (ION)
INST NAVIGATION. 2012: 1624–1631
View details for Web of Science ID 000317865600081
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Availability Impact on GPS Aviation due to Strong Ionospheric Scintillation
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2011; 47 (3): 1963-1973
View details for Web of Science ID 000293417100028
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Correlation of GPS signal fades due to ionospheric scintillation for aviation applications
ADVANCES IN SPACE RESEARCH
2011; 47 (10): 1777-1788
View details for DOI 10.1016/j.asr.2010.07.014
View details for Web of Science ID 000290136900013
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Alternative Characterization of Analog Signal Deformation for GNSS-GPS Satellites
International Technical Meeting of the Institute of Navigation
INST NAVIGATION. 2011: 497–507
View details for Web of Science ID 000290749900038
-
First Signal in Space Analysis of GLONASS K-1
INST NAVIGATION. 2011: 3076–82
View details for Web of Science ID 000304032003014
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Optimization of a Vertical Protection Level Equation for Dual Frequency SBAS
International Technical Meeting of the Institute of Navigation
INST NAVIGATION. 2011: 459–463
View details for Web of Science ID 000290749900034
-
Statistical Characterization of GPS Signal-In-Space Errors
International Technical Meeting of the Institute of Navigation
INST NAVIGATION. 2011: 312–319
View details for Web of Science ID 000290749900017
-
Demonstrations of Multi-Constellation Advanced RAIM for Vertical Guidance using GPS and GLONASS Signals
24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS)
INST NAVIGATION. 2011: 3227–3234
View details for Web of Science ID 000304032003029
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SBAS and GBAS Integrity for Non-Aviation Users: Moving Away from "Specific Risk"
International Technical Meeting of the Institute of Navigation
INST NAVIGATION. 2011: 533–545
View details for Web of Science ID 000290749900040
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Statistical Characterization of GLONASS Broadcast Ephemeris Errors
24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS)
INST NAVIGATION. 2011: 3109–3117
View details for Web of Science ID 000304032003017
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Breaking the Ice: Navigation in the Arctic
24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS)
INST NAVIGATION. 2011: 3767–3772
View details for Web of Science ID 000304032003081
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A Proposal for Multi-Constellation Advanced RAIM for Vertical Guidance
24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS)
INST NAVIGATION. 2011: 2665–2680
View details for Web of Science ID 000304032002074
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Evolving WAAS to Serve L1/L5 Users
24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS)
INST NAVIGATION. 2011: 2495–2504
View details for Web of Science ID 000304032002057
-
Advanced RAIM Demonstration using Four Months of Ground Data
International Technical Meeting of the Institute of Navigation
INST NAVIGATION. 2011: 279–284
View details for Web of Science ID 000290749900014
-
A Clock and Ephemeris Algorithm for Dual Frequency SBAS
24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS)
INST NAVIGATION. 2011: 2513–2519
View details for Web of Science ID 000304032002059
-
Bounding Errors Caused by Nominal GNSS Signal Deformations
24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS)
INST NAVIGATION. 2011: 2657–2664
View details for Web of Science ID 000304032002073
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Reversion from L1-L5 Dual to L5 Single Frequency WAAS in the Presence of RF Interference
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2010; 46 (3): 1110-1126
View details for Web of Science ID 000282954900012
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RAIM with Optimal Integrity and Continuity Allocations Under Multiple Failures
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2010; 46 (3): 1235-1247
View details for Web of Science ID 000282954900021
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Unaugmented GPS-Based Flight Inspection System
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2010; 46 (2): 717-724
View details for DOI 10.1109/TAES.2010.5461646
View details for Web of Science ID 000277499800016
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GPS Ephemeris Error Screening and Results for 2006-2009
2010 International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2010: 1014–1022
View details for Web of Science ID 000280139100104
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GPS in Mid-life with an International Team of Doctors Analyzing IIF-1 Satellite Performance and Backward-Compatibility
23rd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-2010)
INST NAVIGATION. 2010: 1597–1604
View details for Web of Science ID 000290734901063
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Prototyping Advanced RAIM for Vertical Guidance
23rd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-2010)
INST NAVIGATION. 2010: 285–291
View details for Web of Science ID 000290734900021
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GPS Signal-in-Space Anomalies in the Last Decade Data Mining of 400,000,000 GPS Navigation Messages
23rd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-2010)
INST NAVIGATION. 2010: 3115–3122
View details for Web of Science ID 000290734903013
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Characterization of Signal Deformations for GPS and WAAS Satellites
23rd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-2010)
INST NAVIGATION. 2010: 3143–3151
View details for Web of Science ID 000290734903015
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Vertical Protection Level Equations for Dual Frequency SBAS
23rd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-2010)
INST NAVIGATION. 2010: 2031–2041
View details for Web of Science ID 000290734902009
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Coverage Improvement for Dual Frequency SBAS
2010 International Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2010: 344–353
View details for Web of Science ID 000280139100039
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MATLAB Algorithm Availability Simulation Tool
GPS SOLUTIONS
2009; 13 (4): 327-332
View details for DOI 10.1007/s10291-009-0117-4
View details for Web of Science ID 000270171300008
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Compass-M1 Broadcast Codes in E2, E5b, and E6 Frequency Bands
IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING
2009; 3 (4): 599-612
View details for DOI 10.1109/JSTSP.2009.2025635
View details for Web of Science ID 000268377200006
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Characteristics of deep GPS signal fading due to ionospheric scintillation for aviation receiver design
RADIO SCIENCE
2009; 44
View details for DOI 10.1029/2008RS004077
View details for Web of Science ID 000268095500003
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Hysteresis in RAIM
22nd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-09)
INST NAVIGATION. 2009: 2818–2823
View details for Web of Science ID 000284356202085
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Availability Benefit of Future Dual Frequency GPS Avionics under Strong Ionospheric Scintillation
22nd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-09)
INST NAVIGATION. 2009: 1216–1224
View details for Web of Science ID 000284356201026
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Methodology and Case Studies of Signal-in-Space Error Calculation Top-down Meets Bottom-up
22nd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-09)
INST NAVIGATION. 2009: 2824–2831
View details for Web of Science ID 000284356202086
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Characterizing Nominal Analog Signal Deformation on GNSS Signals
22nd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-09)
INST NAVIGATION. 2009: 1343–1350
View details for Web of Science ID 000284356201038
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Evaluation of Signal in Space Error Bounds to Support Aviation Integrity
22nd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-09)
INST NAVIGATION. 2009: 1317–1329
View details for Web of Science ID 000284356201036
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Bounding higher-order ionosphere errors for the dual-frequency GPS user
RADIO SCIENCE
2008; 43 (5)
View details for DOI 10.1029/2007RS003772
View details for Web of Science ID 000259992300001
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Altitudinal variation of midlatitude localized TEC enhancement from ground- and space-based measurements
SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
2008; 6 (10)
View details for DOI 10.1029/2008SW000396
View details for Web of Science ID 000259992500001
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Position Error Bound Calculation for GNSS using Measurement Residuals
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2008; 44 (3): 977-984
View details for Web of Science ID 000260332000011
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Wide area augmentation system-based might inspection system
JOURNAL OF AIRCRAFT
2008; 45 (2): 614-621
View details for DOI 10.2514/1.32531
View details for Web of Science ID 000254761600029
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Improving GPS-based landing system performance using an empirical barometric altimeter confidence bound
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
2008; 44 (1): 127-146
View details for Web of Science ID 000255466000011
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Future Architectures to Provide Aviation Integrity
2008 National Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2008: 394–401
View details for Web of Science ID 000279793700034
-
Compass-M1 Broadcast Codes and Their Application to Acquisition and Tracking
2008 National Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2008: 133–141
View details for Web of Science ID 000279793700007
-
Understanding the GIOVE-B Broadcast Codes of the Galileo System
42nd Asilomar Conference on Signals, Systems and Computers
IEEE. 2008: 2086–2090
View details for Web of Science ID 000274551001180
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Understanding PHMI for Safety of Life Applications in GNSS
2007 National Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2007: 305–310
View details for Web of Science ID 000279780100024
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Adaptive Carrier Smoothing Using Code and Carrier Divergence
2007 National Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2007: 141–152
View details for Web of Science ID 000279780100007
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Model Analysis on the Performance for an Inertial Aided FLL-Assisted-PLL Carrier-Tracking Loop in the Presence of Ionospheric Scintillation
2007 National Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2007: 1276–1295
View details for Web of Science ID 000279780100132
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Galileo GIOVE-A Broadcast E5 Codes and their Application to Acquisition and Tracking
2007 National Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2007: 936–946
View details for Web of Science ID 000279780100097
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Bounding Higher Order Ionosphere Errors for the Dual Frequency GPS User
19th International Technical Meeting of the Satellite Division of the Institute-of-Navigation
INST NAVIGATION. 2006: 1377–1392
View details for Web of Science ID 000279025901061
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Optimizing WAAS Accuracy/Stability For a Single Frequency Receiver
INST NAVIGATION. 2006: 962–70
View details for Web of Science ID 000279025901018
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Code Generation Scheme and Property Analysis of Broadcast Galileo L1 and E6 Signals
19th International Technical Meeting of the Satellite Division of the Institute-of-Navigation
INST NAVIGATION. 2006: 1526–1534
View details for Web of Science ID 000279025901076
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Field Data Analysis for a Range-Based Local Airport Monitor for WAAS
2006 National Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2006: 748–758
View details for Web of Science ID 000279767800070
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A development of WAAS-aided Flight Inspection Truth System
2006 IEEE/ION POSITION, LOCATION AND NAVIGATION SYMPOSIUM, VOLS 1-3
2006: 61-70
View details for Web of Science ID 000241665600009
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Galileo-GPS RAIM for Vertical Guidance
2006 National Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2006: 432–440
View details for Web of Science ID 000279767800039
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WAAS-based threat monitoring for a Local Airport Monitor (LAM) that supports Category I Precision Approach
IEEE/ION Position, Location, and Navigation Symposium
IEEE. 2006: 468–482
View details for Web of Science ID 000241665600056
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A Reference Point-based Precise Relative Positioning Method Using a Single Frequency Receiver
2006 National Technical Meeting of the Institute-of-Navigation
INST NAVIGATION. 2006: 283–292
View details for Web of Science ID 000279767800025
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Ionospheric estimation and integrity threat detection
ION National Meeting on Navigation and Positioning in the Information Age
INST NAVIGATION. 1997: 883–889
View details for Web of Science ID 000071004000086
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High integrity multipath mitigation techniques for ground reference stations
10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation
INST NAVIGATION. 1997: 593–604
View details for Web of Science ID 000073331000059
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Improving WAAS integrity and availability: UDRE and GIVE time updates
10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation
INST NAVIGATION. 1997: 1315–1324
View details for Web of Science ID 000073331000138
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Ionospheric correction using tomography
10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation
INST NAVIGATION. 1997: 249–257
View details for Web of Science ID 000073331000026
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A proposed integrity equation for WAAS MOPS
10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation
INST NAVIGATION. 1997: 475–484
View details for Web of Science ID 000073331000048
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Comparison of master station and user algorithms for wide-area augmentation system
JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
1997; 20 (1): 170-176
View details for Web of Science ID A1997WC64500024
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Integration of wide area DGPS with local area kinematic DGPS
IEEE 1996 Position Location and Navigation Symposium (PLANS 96)
I E E E. 1996: 523–529
View details for Web of Science ID A1996BF52A00077
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Quality control algorithms on Wide-area Reference Station for WAAS
52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium
INST NAVIGATION. 1996: 487–495
View details for Web of Science ID A1996BJ47X00054
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Generation of ionospheric correction and confidence estimates for WAAS
52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium
INST NAVIGATION. 1996: 139–146
View details for Web of Science ID A1996BJ47X00017
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Validation or the RTCA message format for WAAS
8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95)
INST NAVIGATION. 1995: 661–670
View details for Web of Science ID A1995BE72A00072
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Observed GPS signal continuity interruptions
8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95)
INST NAVIGATION. 1995: 793–795
View details for Web of Science ID A1995BE72A00085
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An algorithm for inter-frequency bias calibration and application to WAAS ionosphere modeling
8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95)
INST NAVIGATION. 1995: 639–646
View details for Web of Science ID A1995BE72A00070
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A low temperature gyroscope clock for gravitational redshift experiments
XXXth Rencontres de Moriond on Dark Matter in Cosmology, Clocks and Tests of Fundamental Laws
EDITIONS FRONTIERES. 1995: 429–436
View details for Web of Science ID A1995BG71M00045
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CHARACTERIZING FREQUENCY STABILITY - A CONTINUOUS POWER-LAW MODEL WITH DISCRETE SAMPLING
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
1994; 43 (1): 69–79
View details for DOI 10.1109/19.286357
View details for Web of Science ID A1994NQ12800013
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FLIGHT TRIALS OF THE WIDE AREA AUGMENTATION SYSTEM (WAAS)
7th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation (ION GPS-94)
INST NAVIGATION. 1994: 1537–1546
View details for Web of Science ID A1994BC96F00169
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AUTONOMOUS INTEGRITY MONITORING AND WIDE AREA DGPS
1994 National Technical Meeting on Navigating the Earth and Beyond
INST NAVIGATION. 1994: 155–163
View details for Web of Science ID A1994BC49J00020
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DISCRETE SIMULATION OF POWER-LAW NOISE
I E E E. 1992: 274–83
View details for DOI 10.1109/FREQ.1992.270003
View details for Web of Science ID A1992BY55T00041
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AN ULTRA HIGH-VACUUM LOW-TEMPERATURE GYROSCOPE CLOCK
19TH INTERNATIONAL CONF ON LOW TEMPERATURE PHYSICS ( LT-19 )
ELSEVIER SCIENCE BV. 1990: 155–156
View details for Web of Science ID A1990ED91500079