Bio

Juan Blanch is a senior research engineer in the Department of Aeronautics and Astronautics (AA) at Stanford University. He received a Ph.D. and M.S. in Aeronautics and Astronautics, and a M.S. in Electrical Engineering, all three from Stanford University. He is a graduate from Ecole Polytechnique, France.

Dr. Blanch’s research goal is to make location technology safe for critical applications, like air navigation and autonomous driving. His thesis work, for which he received the Institute of Navigation Parkinson Award, applied geospatial statistics to ionospheric estimation. This work is now fielded in the Wide Area Augmentation System – which is used by over 100,000 aircraft and by more than 1 million land users-, and has resulted in significant performance improvements. Within the FAA’s Global Navigation Satellite System Evolutionary Architecture Study (GEAS), Dr. Blanch developed an Advanced Receiver Autonomous Integrity Monitoring (ARAIM) algorithm that is now referenced by the international aviation integrity community. This algorithm can support a wide range of assumptions, readily handles multiple fault cases, and has a simple but rigorous proof of safety. He served as one of the lead authors on the initial GEAS report that proposed ARAIM as one of the most promising future architectures to support world-wide vertical guidance of aircraft, and he is now working on the development of the aviation standards to enable ARAIM. More recently, he has worked on the extension of these techniques to high accuracy automotive navigation.

He has over 100 scientific publications including conference proceedings, trade magazine articles, and peer-reviewed journal articles. He has been recognized as a top peer-reviewer by Publons and the Institute of Navigation, and is currently an Associate Editor for IEEE Transactions on Aerospace Electronic Systems. He received the 2010 Early Achievement Award from the Institute of Navigation.

Academic Appointments

  • Sr Research Engineer, Aeronautics and Astronautics

Honors & Awards

  • Top peer reviewer, Publons (2019)
  • Early Achievement Award, Institute of Navigation (June, 2010)
  • Bradford W. Parkinson Award for Graduate Student Excellence in Global Navigation Satellite Systems, Institute of Navigation (September 2004)

Boards, Advisory Committees, Professional Organizations

  • Associate Editor, IEEE (2018 - Present)
  • Member, Institute of Navigation (2003 - Present)

Professional Education

  • Ph.D., Stanford University, Aeronautics and Astronautics (2004)
  • M.S., Stanford University, Electrical Engineering (2004)
  • M.S., Stanford University, Aeronautics and Astronautics (2000)
  • Eng. Deg., Ecole Polytechnique, France, Applied Physics (1999)

Contact

Additional Info

Current Research and Scholarly Interests

My research focuses on the design of navigation integrity algorithms for safety critical applications (like air navigation and autonomous driving). I am interested in both the design of practical algorithms that provide the required safety margins, and in the theoretical limits on the performance of the integrity monitoring algorithms.

All Publications

  • An Evaluation of the Advanced RAIM Threat Model Blanch, J., Walter, T., IEEE IEEE. 2023: 408-413

    View details for DOI 10.1109/PLANS53410.2023.10139928

    View details for Web of Science ID 001022344800049

  • A FAULT DETECTION AND EXCLUSION ESTIMATOR DESIGNED FOR INTEGRITY Blanch, J., Walter, T., INST NAVIGAT INST NAVIGATION. 2021: 1672-1686

    View details for DOI 10.33012/2021.17954

    View details for Web of Science ID 000874785701044

  • Evaluating the Application of PPP Techniques to ARAIM Using Flight Data Phelts, R., Gunning, K., Blanch, J., Walter, T., Inst Navigat INST NAVIGATION. 2020: 379–85

    View details for DOI 10.33012/2020.17151

    View details for Web of Science ID 000544820300023

  • Stress Testing Advanced RAIM Airborne Algorithms Blanch, J., Walter, T., Inst Navigat INST NAVIGATION. 2020: 421–39

    View details for DOI 10.33012/2020.17153

    View details for Web of Science ID 000544820300026

  • Gaussian Bounds of Sample Distributions for Integrity Analysis IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Blanch, J., Walter, T., Enge, P. 2019; 55 (4): 1806–15

    View details for DOI 10.1109/TAES.2018.2876583

    View details for Web of Science ID 000480348800017

  • Fixed Subset Selection to Reduce Advanced RAIM Complexity Blanch, J., Walter, T., Enge, P., Inst Navigat INST NAVIGATION. 2018: 88–98

    View details for Web of Science ID 000436563900008

  • A Formula for Solution Separation without Subset Solutions for Advanced RAIM Blanch, J., Walter, T., Enge, P., IEEE IEEE. 2018: 316–26

    View details for Web of Science ID 000435257800042

  • Theoretical Results on the Optimal Detection Statistics for Autonomous Integrity Monitoring NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION Blanch, J., Walter, T., Enge, P. 2017; 64 (1): 123–37

    View details for DOI 10.1002/navi.175

    View details for Web of Science ID 000403758600009

  • A Simple Position Estimator That Improves Advanced RAIM Performance IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Blanch, J., Walter, T., Enge, P., Kropp, V. 2015; 51 (3): 2485-U960

    View details for DOI 10.1109/TAES.2015.140674

    View details for Web of Science ID 000362015800070

  • Baseline Advanced RAIM User Algorithm and Possible Improvements IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Blanch, J., Walker, T., Enge, P., Lee, Y., Pervan, B., Rippl, M., Spletter, A., Kropp, V. 2015; 51 (1): 713-732

    View details for DOI 10.1109/TAES.2014.130739

    View details for Web of Science ID 000352700900055

  • Optimal Positioning for Advanced Raim NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION Blanch, J., Walter, T., Enge, P. 2013; 60 (4): 279-289

    View details for DOI 10.1002/navi.49

    View details for Web of Science ID 000339567500003

  • RAIM with Optimal Integrity and Continuity Allocations Under Multiple Failures IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Blanch, J., Walter, T., Enge, P. 2010; 46 (3): 1235-1247

    View details for Web of Science ID 000282954900021

  • WAAS and the Ionosphere - A Historical Perspective: Monitoring Storms NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION Sparks, L., Altshuler, E., Pandya, N., Blanch, J., Walter, T. 2022; 69 (1)

    View details for DOI 10.33012/navi.503

    View details for Web of Science ID 000790870400004

  • Fast Protection Levels for Fault Detection With an Application to Advanced RAIM IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Blanch, J., Walter, T. 2021; 57 (1): 55–65

    View details for DOI 10.1109/TAES.2020.3011997

    View details for Web of Science ID 000617426500005

  • ARAIM for Military Users: ISM Parameters, Constellation-Check Procedure and Performance Estimates Katz, A., Pullen, S., Lo, S., Blanch, J., Walter, T., Katronick, A., Crews, M., Jackson, R., Inst Navigat INST NAVIGATION. 2021: 173-188

    View details for DOI 10.33012/2021.17812

    View details for Web of Science ID 000671019900014

  • Continuity and Availability Evaluation in Horizontal ARAIM Joerger, M., Racelis, D., Blanch, J., Pervan, B., INST NAVIGAT INST NAVIGATION. 2021: 278-289

    View details for DOI 10.33012/2021.17963

    View details for Web of Science ID 000874785700015

  • Assessment of Ionospheric Correction Behavior for Use with Precise Point Positioning (PPP) Walter, T., Blanch, J., de Groot, L., Norman, L., Inst Navigat INST NAVIGATION. 2021: 616-624

    View details for DOI 10.33012/2021.17853

    View details for Web of Science ID 000671019900048

  • GAUSSIAN BOUNDING IMPROVEMENTS AND AN ANALYSIS OF THE BIAS-SIGMA TRADEOFF FOR GNSS INTEGRITY Blanch, J., Liu, X., Walter, T., Inst Navigat INST NAVIGATION. 2021: 703-713

    View details for DOI 10.33012/2021.17861

    View details for Web of Science ID 000671019900056

  • Analysis of GNSS Constellation Performance for Advanced RAIM Blanch, J., Liu, X., Gunning, K., Walter, T., INST NAVIGAT INST NAVIGATION. 2021: 1410-1434

    View details for DOI 10.33012/2021.18148

    View details for Web of Science ID 000874785701029

  • Ground Monitoring to Support ARAIM for Military Users: Alternatives for Rapid and Rare Update Rates Pullen, S., Lo, S., Katz, A., Blanch, J., Walter, T., Katronick, A., Crews, M., Johnson, R., INST NAVIGAT INST NAVIGATION. 2021: 1481-1507

    View details for DOI 10.33012/2021.18159

    View details for Web of Science ID 000874785701033

  • Providing Continuity and Integrity in the Presence of GNSS Spoofing Rothmaier, F., Chen, Y., Lo, S., Blanch, J., Walter, T., INST NAVIGAT INST NAVIGATION. 2021: 1828-1842

    View details for DOI 10.33012/2021.17984

    View details for Web of Science ID 000874785701053

  • Investigation into September 2020 GPS SVN 74 Performance Anomaly Walter, T., Liu, Z., Blanch, J., Pham, K., Mick, J., Wanner, W., Inst Navigat INST NAVIGATION. 2021: 189-200

    View details for DOI 10.33012/2021.17818

    View details for Web of Science ID 000671019900015

  • ARAIM Continuity and Availability Assertions, Assumptions, and Evaluation Methods Joerger, M., Zhai, Y., Martini, I., Blanch, J., Pervan, B., Inst Navigat INST NAVIGATION. 2020: 404–20

    View details for DOI 10.33012/2020.17152

    View details for Web of Science ID 000544820300025

  • BOUNDING TEMPORALLY CORRELATED MEASUREMENT NOISE WITH AN APPLICATION TO GNSS INTEGRITY Blanch, J., Phelts, E., Gunning, K., Walter, T., de Groot, L., Norman, L., Inst Navigat INST NAVIGATION. 2020: 27-38

    View details for DOI 10.33012/2020.17549

    View details for Web of Science ID 000632603500002

  • Determination of Fault Probabilities for ARAIM IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Walter, T., Blanch, J., Gunning, K., Joerger, M., Pervan, B. 2019; 55 (6): 3505–16

    View details for DOI 10.1109/TAES.2019.2909727

    View details for Web of Science ID 000507917800066

  • Lower Bounds in Optimal Integrity Monitoring Blanch, J., Walter, T., Inst Navigat INST NAVIGATION. 2019: 915–24

    View details for DOI 10.33012/2019.16788

    View details for Web of Science ID 000475697600076

  • SBAS Corrections for PPP Integrity with Solution Separation Gunning, K., Blanch, J., Walter, T., Inst Navigat INST NAVIGATION. 2019: 707–19

    View details for DOI 10.33012/2019.16739

    View details for Web of Science ID 000542920400055

  • Development and Evaluation of Airborne Multipath Error Bounds for L1-L5 Blanch, J., Walter, T., Phelts, R., Inst Navigat INST NAVIGATION. 2019: 53–61

    View details for DOI 10.33012/2019.16735

    View details for Web of Science ID 000542920400003

  • Reducing Computational Load in Solution Separation for Kalman Filters and an Application to PPP Integrity Blanch, J., Gunning, K., Walter, T., De Groot, L., Norman, L., Inst Navigat INST NAVIGATION. 2019: 720–29

    View details for DOI 10.33012/2019.16721

    View details for Web of Science ID 000542920400056

  • Safety Analysis of Ranging Biases on the WAAS GEOs Walter, T., Blanch, J., Altshuler, E., Inst Navigat INST NAVIGATION. 2019: 113–30

    View details for DOI 10.33012/2019.16679

    View details for Web of Science ID 000542920400008

  • Standards for ARAIM ISM Data Analysis Walter, T., Blanch, J., Gunning, K., Inst Navigat INST NAVIGATION. 2019: 777–84

    View details for DOI 10.33012/2019.16837

    View details for Web of Science ID 000475697600064

  • Development of Advanced RAIM Minimum Operational Performance Standards Blanch, J., Walter, T., Berz, G., Burns, J., Clark, B., Joerger, M., Mabilleau, M., Martini, I., Milner, C., Pervan, B., Lee, Y., Inst Navigat INST NAVIGATION. 2019: 1381–91

    View details for DOI 10.33012/2019.16904

    View details for Web of Science ID 000568618901029

  • Integrity for Tightly Coupled PPP and IMU Gunning, K., Blanch, J., Walter, T., de Groot, L., Norman, L., Inst Navigat INST NAVIGATION. 2019: 3066–78

    View details for DOI 10.33012/2019.17011

    View details for Web of Science ID 000568618903010

  • Validation of the Unfaulted Error Bounds for ARAIM NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION Walter, T., Gunning, K., Phelts, R., Blanch, J. 2018; 65 (1): 117–33

    View details for Web of Science ID 000428524500010

  • Improved User Position Monitor for WAAS NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION Walter, T., Blanch, J. 2017; 64 (1): 165–75

    View details for DOI 10.1002/navi.180

    View details for Web of Science ID 000403758600012

  • Projected Performance of a Baseline High Integrity GNSS Railway Architecture under Nominal and Faulted Conditions Lo, S., Pullen, S., Blanch, J., Enge, P., Neri, A., Palma, V., Salvitti, M., Stallo, C., INST NAVIGAT INST NAVIGATION. 2017: 2148–71

    View details for Web of Science ID 000419292302015

  • Integrity measures in direct-positioning Closas, P., Gusi-Amigo, A., Blanch, J., INST NAVIGAT INST NAVIGATION. 2017: 2428–35

    View details for Web of Science ID 000419292302033

  • Initial Results of a Multi-Constellation ARAIM Airborne Prototype Blanch, J., Phelts, R., Chen, Y., Enge, P., INST NAVIGAT INST NAVIGATION. 2017: 184–209

    View details for Web of Science ID 000405076700014

  • A MATLAB Toolset to Determine Strict Gaussian Bounding Distributions of a Sample Distribution Blanch, J., Walter, T., Enge, P., INST NAVIGAT INST NAVIGATION. 2017: 4236–47

    View details for Web of Science ID 000419292304023

  • Feasibility of fault exclusion related to advanced RAIM for GNSS spoofing detection Kuusniemi, H., Blanch, J., Chen, Y., Lo, S., Innac, A., Ferrara, G., Honkala, S., Bhuiyan, M. H., Thombre, S., Soderholm, S., Walter, T., Phelts, R., Enge, P., INST NAVIGAT INST NAVIGATION. 2017: 2359–70

    View details for Web of Science ID 000419292302029

  • A Simple Satellite Exclusion Algorithm for Advanced RAIM Blanch, J., Walter, T., Enge, P., Inst Navigat INST NAVIGATION. 2016: 239–44

    View details for Web of Science ID 000379864100020

  • GNSS Integrity in The Arctic NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION Reid, T., Walter, T., Blanch, J., Enge, P. 2016; 63 (4): 469-492

    View details for Web of Science ID 000397681800008

  • Improved Ephemeris Monitoring for GNSS Walter, T., Gunning, K., Blanch, J., Inst Navigat INST NAVIGATION. 2016: 600–608

    View details for Web of Science ID 000379864100059

  • Determination of Fault Probabilities for ARAIM Walter, T., Blanch, J., Joerger, M., Pervan, B., IEEE IEEE. 2016: 451–61

    View details for Web of Science ID 000389021800060

  • Improved User Position Monitor for WAAS Walter, T., Blanch, J., Inst Navigat INST NAVIGATION. 2016: 343–52

    View details for Web of Science ID 000379864100030

  • Mitigation of short duration satellite outages for Advanced RAIM and other integrity systems based on GNSS Blanch, J., Chen, Y., Phelts, R., Walter, T., Enge, P., Inst Navigat INST NAVIGATION. 2016: 1688–95

    View details for Web of Science ID 000391479501067

  • Demonstrating ARAIM on UAS using Software Defined Radio and Civilian Signal GPS L1/L2C and GLONASS G1/G2 Chen, Y., Perkins, A., Lo, S., Akos, D. M., Blanch, J., Walter, T., Enge, P., Inst Navigat INST NAVIGATION. 2016: 231–38

    View details for Web of Science ID 000379864100019

  • Satellite Selection for Multi-Constellation SBAS Walter, T., Blanch, J., Kropp, V., Inst Navigat INST NAVIGATION. 2016: 1350–59

    View details for Web of Science ID 000391479501038

  • ARAIM in Flight Using GPS and GLONASS: Initial Results from a Real-time Implementation Phelts, R., Blanch, J., Chen, Y., Enge, P., Riley, S., Inst Navigat INST NAVIGATION. 2016: 3264–69

    View details for Web of Science ID 000391479503030

  • Progress on Working Group-C Activities on Advanced RAIM Blanch, J., Walter, T., Enge, P., Burns, J., Alexander, K., Boyero, J., Lee, Y., Pervan, B., Joerger, M., Khanafseh, S., Rippl, M., Martini, I., Perea, S., Kropp, V., Macabiau, C., Suard, N., Berz, G., Inst Navigat INST NAVIGATION. 2015: 629–38

    View details for Web of Science ID 000375211600044

  • Airborne Mitigation Of Constellation Wide Faults Walter, T., Blanch, J., Inst Navigat INST NAVIGATION. 2015: 676–86

    View details for Web of Science ID 000365040300072

  • GNSS Integrity in The Arctic Reid, T. R., Walter, T., Blanch, J., Enge, P. K., Inst Navigat INST NAVIGATION. 2015: 1726–40

    View details for Web of Science ID 000375211601050

  • Fast Multiple Fault Exclusion with a Large Number of Measurements Blanch, J., Walter, T., Enge, P., Inst Navigat INST NAVIGATION. 2015: 696–701

    View details for Web of Science ID 000365040300074

  • Characterization of GPS Clock and Ephemeris Errors to Support ARAIM Walter, T., Blanch, J., Inst Navigat INST NAVIGATION. 2015: 920–31

    View details for Web of Science ID 000365398300080

  • Development of a Real-time GNSS Software Receiver for Evaluating RAIM in Multi-constellation International Technical Meeting of the Institute-of-Navigation Chen, Y., Lo, S., Akos, D. M., Choi, M., Blanch, J., Walter, T., Enge, P. INST NAVIGATION. 2014: 525–533

    View details for Web of Science ID 000339630900053

  • Reduced Subset Analysis for Multi-Constellation ARAIM International Technical Meeting of the Institute-of-Navigation Walter, T., Blanch, J., Enge, P. INST NAVIGATION. 2014: 89–98

    View details for Web of Science ID 000339630900006

  • Evaluation of a covariance-based clock and ephemeris error bounding algorithm for SBAS Blanch, J., Walter, T., Enge, P., Stern, A., Altshuler, E., Inst Navigat INST NAVIGATION. 2014: 3270–76

    View details for Web of Science ID 000356331204038

  • Exclusion for Advanced RAIM: Requirements and a Baseline Algorithm International Technical Meeting of the Institute-of-Navigation Blanch, J., Walter, T., Enge, P. INST NAVIGATION. 2014: 99–107

    View details for Web of Science ID 000339630900007

  • The Effect of Nominal Signal Deformations on ARAIM Users International Technical Meeting of the Institute-of-Navigation Phelts, R. E., Blanch, J., Walter, T., Enge, P. INST NAVIGATION. 2014: 56–67

    View details for Web of Science ID 000339630900003

  • Architectures for Advanced RAIM: Offline and Online Blanch, J., Walter, T., Enge, P., Pervan, B., Joerger, M., Khanafseh, S., Burns, J., Alexander, K., Boyero, J., Lee, Y., Kropp, V., Milner, C., Macabiau, C., Suard, N., Berz, G., Rippl, M., Inst Navigat INST NAVIGATION. 2014: 787–804

    View details for Web of Science ID 000356331201004

  • Critical Elements for a Multi-Constellation Advanced RAIM NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION Blanch, J., Walter, T., Enge, P., Wallner, S., Fernandez, F. A., Dellago, R., Ioannides, R., Hernandez, I. F. 2013; 60 (1): 53-69

    View details for DOI 10.1002/navi.29

    View details for Web of Science ID 000339565800005

  • Incorporating GLONASS into Aviation RAIM Receivers International Technical Meeting of the Institute-of-Navigation Walter, T., Blanch, J., Choi, M. J., Reid, T., Enge, P. INST NAVIGATION. 2013: 239–249

    View details for Web of Science ID 000327063800022

  • Results on the Optimal Detection Statistic for Integrity Monitoring International Technical Meeting of the Institute-of-Navigation Blanch, J., Walter, T., Enge, P. INST NAVIGATION. 2013: 262–273

    View details for Web of Science ID 000327063800024

  • Near Term Improvements to WAAS Availability International Technical Meeting of the Institute-of-Navigation Blanch, J., Walter, T., Phelts, R. E., Enge, P. INST NAVIGATION. 2013: 71–77

    View details for Web of Science ID 000327063800003

  • Implementation of the L5 SBAS MOPS Walter, T., Blanch, J., Enge, P., Inst Navigat INST NAVIGATION. 2013: 814–24

    View details for Web of Science ID 000375213000077

  • Advanced RAIM System Architecture with a Long Latency Integrity Support Message Blanch, J., Walter, T., Enge, P., Inst Navigat INST NAVIGATION. 2013: 2605–13

    View details for Web of Science ID 000375213002056

  • OPTIMAL POSITIONING FOR ADVANCED RAIM International Technical Meeting (ITM) of the Institute-of-Navigation (ION) Blanch, J., Walter, T., Enge, P. INST NAVIGATION. 2012: 1624–1631

    View details for Web of Science ID 000317865600081

  • Evolving WAAS to Serve L1/L5 Users NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION Walter, T., Blanch, J., Phelts, R. E., Enge, P. 2012; 59 (4): 317-327

    View details for DOI 10.1002/navi.21

    View details for Web of Science ID 000209006500006

  • 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 Choi, M., Blanch, J., Walter, T., Akos, D., Enge, P. INST NAVIGATION. 2012: 884–892

    View details for Web of Science ID 000327163300084

  • L1/L5 SBAS MOPS to Support Multiple Constellations 25th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation Walter, T., Blanch, J., Enge, P. INST NAVIGATION. 2012: 1287–1297

    View details for Web of Science ID 000327163301028

  • A Framework for Analyzing Architectures that Support ARAIM 25th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation Walter, T., Blanch, J., Enge, P. INST NAVIGATION. 2012: 2850–2857

    View details for Web of Science ID 000327163302072

  • 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 Blanch, J., Walter, T., Enge, P., Lee, Y., Pervan, B., Rippl, M., Spletter, A. INST NAVIGATION. 2012: 2828–2849

    View details for Web of Science ID 000327163302071

  • Estimating ionospheric delay using kriging: 2. Impact on satellite-based augmentation system availability RADIO SCIENCE Sparks, L., Blanch, J., Pandya, N. 2011; 46

    View details for DOI 10.1029/2011RS004781

    View details for Web of Science ID 000296356100001

  • Estimating ionospheric delay using kriging: 1. Methodology RADIO SCIENCE Sparks, L., Blanch, J., Pandya, N. 2011; 46

    View details for DOI 10.1029/2011RS004667

    View details for Web of Science ID 000296356000001

  • 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) Blanch, J., Walter, T., Enge, P., Wallner, S., Fernandez, F. A., Dellago, R., Ioannides, R., Pervan, B., Hernandez, I. F. INST NAVIGATION. 2011: 2665–2680

    View details for Web of Science ID 000304032002074

  • Evolving WAAS to Serve L1/L5 Users 24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS) Walter, T., Blanch, J., Phelts, R. E., Enge, P. INST NAVIGATION. 2011: 2495–2504

    View details for Web of Science ID 000304032002057

  • 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) Choi, M., Blanch, J., Akos, D., Heng, L., Gao, G., Walter, T., Enge, P. INST NAVIGATION. 2011: 3227–3234

    View details for Web of Science ID 000304032003029

  • Advanced RAIM Demonstration using Four Months of Ground Data International Technical Meeting of the Institute of Navigation Choi, M., Blanch, J., Walter, T., Enge, P. INST NAVIGATION. 2011: 279–284

    View details for Web of Science ID 000290749900014

  • Optimization of a Vertical Protection Level Equation for Dual Frequency SBAS International Technical Meeting of the Institute of Navigation Blanch, J., Walter, T., Enge, P. INST NAVIGATION. 2011: 459–463

    View details for Web of Science ID 000290749900034

  • A Clock and Ephemeris Algorithm for Dual Frequency SBAS 24th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS) Blanch, J., Walter, T., Enge, P. INST NAVIGATION. 2011: 2513–2519

    View details for Web of Science ID 000304032002059

  • Coverage Improvement for Dual Frequency SBAS 2010 International Technical Meeting of the Institute-of-Navigation Walter, T., Blanch, J., Enge, P. INST NAVIGATION. 2010: 344–353

    View details for Web of Science ID 000280139100039

  • Kriging as a Means of Improving WAAS Availability Sparks, L., Blanch, J., Pandya, N., ION INST NAVIGATION. 2010: 2013–20

    View details for Web of Science ID 000290734902007

  • Prototyping Advanced RAIM for Vertical Guidance 23rd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-2010) Blanch, J., Choi, M. J., Walter, T., Enge, P. INST NAVIGATION. 2010: 285–291

    View details for Web of Science ID 000290734900021

  • 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) Gao, G. X., Heng, L., Wong, G., Phelts, E., Blanch, J., Walter, T., Enge, P., Erker, S., Thoelert, S., Meurer, M. INST NAVIGATION. 2010: 1597–1604

    View details for Web of Science ID 000290734901063

  • Vertical Protection Level Equations for Dual Frequency SBAS 23rd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-2010) Walter, T., Blanch, J., Enge, P. INST NAVIGATION. 2010: 2031–2041

    View details for Web of Science ID 000290734902009

  • Hysteresis in RAIM 22nd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-09) Blanch, J., Mayer, C., Lo, S., Walter, T., Enge, P. INST NAVIGATION. 2009: 2818–2823

    View details for Web of Science ID 000284356202085

  • Improved Iono PHMI Calculation for SBAS Systems Mayer, C., Blanch, J., ION INST NAVIGATION. 2009: 875–80

    View details for Web of Science ID 000279863400087

  • 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) Gao, G. X., Tang, H., Blanch, J., Lee, J., Walter, T., Enge, P. INST NAVIGATION. 2009: 2824–2831

    View details for Web of Science ID 000284356202086

  • 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) Walter, T., Blanch, J., Enge, P. INST NAVIGATION. 2009: 1317–1329

    View details for Web of Science ID 000284356201036

  • Worldwide Vertical Guidance of Aircraft Based on Modernized GPS and New Integrity Augmentations PROCEEDINGS OF THE IEEE Walter, T., Enge, P., Blanch, J., Pervan, B. 2008; 96 (12): 1918-1935

    View details for DOI 10.1109/JPROC.2008.2006099

    View details for Web of Science ID 000262934800004

  • Bounding higher-order ionosphere errors for the dual-frequency GPS user RADIO SCIENCE Datta-Barua, S., Walter, T., Blanch, J., Enge, P. 2008; 43 (5)

    View details for DOI 10.1029/2007RS003772

    View details for Web of Science ID 000259992300001

  • Position Error Bound Calculation for GNSS using Measurement Residuals IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Blanch, J., Walter, T., Enge, P. 2008; 44 (3): 977-984

    View details for Web of Science ID 000260332000011

  • Future Architectures to Provide Aviation Integrity 2008 National Technical Meeting of the Institute-of-Navigation Walter, T., Blanch, J., Enge, P., Pervan, B., Gratton, L. INST NAVIGATION. 2008: 394–401

    View details for Web of Science ID 000279793700034

  • Fault Detection and Elimination for Galileo-GPS Vertical Guidance 2007 National Technical Meeting of the Institute-of-Navigation Ene, A., Blanch, J., Powell, J. D. INST NAVIGATION. 2007: 1244–1254

    View details for Web of Science ID 000279780100129

  • Understanding PHMI for Safety of Life Applications in GNSS 2007 National Technical Meeting of the Institute-of-Navigation Blanch, J., Walter, T., Enge, P. INST NAVIGATION. 2007: 305–310

    View details for Web of Science ID 000279780100024

  • Galileo-GPS RAIM for Vertical Guidance 2006 National Technical Meeting of the Institute-of-Navigation Ene, A., Blanch, J., Walter, T. INST NAVIGATION. 2006: 432–440

    View details for Web of Science ID 000279767800039

  • Bounding Higher Order Ionosphere Errors for the Dual Frequency GPS User 19th International Technical Meeting of the Satellite Division of the Institute-of-Navigation Datta-Barua, S., Walter, T., Blanch, J., Enge, P. INST NAVIGATION. 2006: 1377–1392

    View details for Web of Science ID 000279025901061

  • Robust Detection of Ionospheric Irregularities NAVIGATION-JOURNAL OF THE INSTITUTE OF NAVIGATION Walter, T., et al 2001; 48 (2): 89–100

    View details for DOI 10.1002/j.2161-4296.2001.tb00231.x

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