Bio

Professor Bradford Parkinson was the Chief Architect for GPS, and led the original advocacy for the system in 1973 as an Air Force Colonel. Gaining approval, he became the first Director of the GPS Joint Program Office and led the original development of spacecraft, Master Control Station and 8 types of User Equipment. He continued leadership of the Program through the extensive test validation Program, including being the Launch Commander for the first GPS satellite launches. This original deployment of GPS demonstrated comfortable margins against all PNT (Positioning, Navigation, and Timing) requirements.
Earlier in his career, he was a key developer of a modernized AC-130 Gunship, introduction of which included 160 hours of combat missions. He was an instructor at the USAF Test Pilot School. In addition he led the Department of Astronautics and Computer Science at the US Air Force Academy. He retired from the US Air Force as a Colonel.
He was appointed a Professor at Stanford University in 1984, after six years of experience in industry. At Stanford University, he led the development of many innovative applications of GPS, including:
1.Commercial aircraft (Boeing 737) blind landing using GPS alone,
2.Fully automatic GPS control of Farm Tractors on a rough field to an accuracy of 2 inches,
3.Pioneering the augmentation to GPS (WAAS) that allows any user to achieve accuracies of 2 feet and very high levels of integrity assurance.
He has been the CEO of two companies, and serves on many boards. He is the editor/author of the AIAA Award winning 2 Volumes: “GPS Theory and Applications” and is author or coauthor of over 80 technical papers.
Among his many awards is the Draper Prize of the National Academy of Engineering, considered by some to be the “Engineering Nobel”.

Academic Appointments

Honors & Awards

  • Medal of Honor, IEEE (2018)
  • Honorary Fellow, AIAA (2017)
  • Marconi Award, The Marconi Society (2016)
  • Hall of Fame, Engineer's Club of Dayton (2015)
  • Honorary Fellow, Royal Institute of Navigation (2014)
  • Engineering Hero, Stanford University (2012)
  • Necho Award, International Association of Institutes of Navigation (2012)
  • The Rheim Technology Prize, Eduard Rheim Institute, Munich (2012)
  • Distinguished Graduate, US Naval Academy (2011)
  • Pioneer's Award, US Space Command (2009)
  • Lloyd Berkner Award, American Astronautical Society (2008)
  • Silicon Valley Hall of Fame, Silicon Valley Engineering Council (2007)
  • Goddard Astronautics Award, AIAA (2006)
  • ASME Gold Medal Award, American Society of Mechanical Engineers (2004)
  • Fellow, IEEE (2004)
  • Member, National Inventors Hall of Fame (2004)
  • Charles Stark Draper Prize, NAE (2003)
  • Discover Innovation Award for Communications, Discover Magazine (2002)
  • Simon Ramo Award, IEEE (2002)
  • Distinguished Public Service Medal, NASA (2001)
  • Fellow, The Institute of Navigation (ION) (1999)
  • Hall of FAME, NASA (1998)
  • Sperry Award, IEEE (1998)
  • Magellanic Premium Award, American Philosophical Society (1997)
  • Member, International Academy of Astronautics (IAA) (1997)
  • Von Karman Lectureship, AIAA (1996)
  • Edward C Wells Professor of Aeronautics & Astronautics, Stanford University (1995)
  • GPS Hall of Fame Award, NAVSTAR Joint Program Office (1995)
  • Pioneer Award, AESS/IEEE (1994)
  • Public Service Medal, NASA (1994)
  • Johannes Kepler Award, ION (1991)
  • Fellow, The Royal Institute of Navigation (1990)
  • Fellow, American Institute of Aeronautics & Astronautics (AIAA) (1990)
  • Member, National Academy of Engineers (NAE) (1990)
  • Burka Award, ION (1987)
  • Kirschner Award, IEEE (1986)
  • Thurlow Award, ION (1986)
  • Engineer of the Year for Silicon Valley, AIAA (1985)
  • Gold Medal Award, Royal Inst. of Navigation (1983)
  • Legion of Merit, US Air Force (1978)
  • Defense Department Superior Performance Award, NAVSTAR (GPS) GPO (1977)
  • Bronze Star, US Air Force (1970)
  • Presidential Unit Citation, Dept. Of Defense (1970)
  • Air Medals (2), US Air Force (1969)
  • Member, Sigma Xi (1961)
  • Member, Tau Beta Pi (MIT Chapter) (1961)

Boards, Advisory Committees, Professional Organizations

  • Member, National Academy of Engineering (2013 - Present)

Professional Education

  • PhD, Stanford University (1966)

Contact

  • Academic
    Brad.Parkinson@stanford.edu
    University - Emeritus faculty Department: Aeronautics and Astronautics Position: Emeritus Faculty, Acad Council (650) 725-8312 (fax)
    University - Other Teaching/Research Department: Aeronautics and Astronautics Position: Professor Emeritus
    • Aeronautics and Astronautics Department
    • 2360 Camino Edna
    • San Luis Obispo,  California  93401 
    (650) 725-8312 (fax)

Additional Info

  • Mail Code: 4035

2023-24 Courses

All Publications

  • Gravity Probe B data analysis: III. Estimation tools and analysis results CLASSICAL AND QUANTUM GRAVITY Conklin, J. W., Heifetz, M. I., Holmes, T., Al-Meshari, M., Parkinson, B. W., Silbergleit, A. S., Everitt, C. W., Al-Jaadan, A., Keiser, G. M., Muhlfelder, B., Solomonik, V. G., Al-Jabreen, H. 2015; 32 (22)

    View details for DOI 10.1088/0264-9381/32/22/224020

    View details for Web of Science ID 000365340500021

  • Gravity Probe B: Final Results of a Space Experiment to Test General Relativity PHYSICAL REVIEW LETTERS Everitt, C. W., DeBra, D. B., Parkinson, B. W., Turneaure, J. P., CONKLIN, J. W., Heifetz, M. I., Keiser, G. M., Silbergleit, A. S., Holmes, T., Kolodziejczak, J., Al-Meshari, M., Mester, J. C., Muhlfelder, B., Solomonik, V. G., Stahl, K., Worden, P. W., Bencze, W., Buchman, S., Clarke, B., Al-Jadaan, A., Al-Jibreen, H., Li, J., Lipa, J. A., Lockhart, J. M., Al-Suwaidan, B., Taber, M., Wang, S. 2011; 106 (22)

    Abstract

    Gravity Probe B, launched 20 April 2004, is a space experiment testing two fundamental predictions of Einstein's theory of general relativity (GR), the geodetic and frame-dragging effects, by means of cryogenic gyroscopes in Earth orbit. Data collection started 28 August 2004 and ended 14 August 2005. Analysis of the data from all four gyroscopes results in a geodetic drift rate of -6601.8±18.3  mas/yr and a frame-dragging drift rate of -37.2±7.2  mas/yr, to be compared with the GR predictions of -6606.1  mas/yr and -39.2  mas/yr, respectively ("mas" is milliarcsecond; 1  mas=4.848×10(-9)  rad).

    View details for DOI 10.1103/PhysRevLett.106.221101

    View details for Web of Science ID 000291093600003

    View details for PubMedID 21702590

  • Looking Ahead for GPtS 23rd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-2010) Parkinson, B. INST NAVIGATION. 2010: 1–45

    View details for Web of Science ID 000290734900001

  • Gravity Probe B Data Analysis Workshop on Probing the Nature of Gravity - Confronting Theory and Experiment in Space Everitt, C. W., Adams, M., Bencze, W., Buchman, S., Clarke, B., CONKLIN, J. W., DeBra, D. B., DOLPHIN, M., Heifetz, M., Hipkins, D., Holmes, T., Keiser, G. M., Kolodziejczak, J., Li, J., Lipa, J., Lockhart, J. M., Mester, J. C., Muhlfelder, B., Ohshima, Y., Parkinson, B. W., Salomon, M., Silbergleit, A., Solomonik, V., Stahl, K., Taber, M., Turneaure, J. P., Wang, S., Worden, P. W. SPRINGER. 2009: 53–69

    View details for DOI 10.1007/s11214-009-9524-7

    View details for Web of Science ID 000273812800006

  • Gravity Probe B(*) RIVISTA DEL NUOVO CIMENTO Keiser, G. M., Adams, M., BENCZE, W. J., BRUMLEY, R. W., Buchman, S., Clarke, B., Conklin, J., DeBra, D. B., DOLPHIN, M., HIPKINS, D. N., Holmes, T., Everitt, C. W., Goebel, J. H., Gill, D., Green, G. B., Heifetz, M., Kolodziejczak, J., Li, J., Lipa, J., Lockhart, J. M., Mester, J. C., Muhlfelder, B., Ohshima, Y., Parkinson, B. W., Salomon, M., Shestople, P., Silbergleit, A. S., Stahl, K., Taber, M. A., Turneaure, J. P., Wang, S., Worden, P. 2009; 32 (11): 555-589

    View details for DOI 10.1393/ncr/i2009-10049-y

    View details for Web of Science ID 000273677400001

  • Gravity Probe B data analysis status and potential for improved accuracy of scientific results 18th International Conference on General Relativity and Gravitation/7th Edoardo Amaldi Conference on Gravitational Waves Everitt, C. W., Adams, M., Bencze, W., Buchman, S., Clarke, B., Conklin, J., DeBra, D. B., DOLPHIN, M., Heifetz, M., Hipkins, D., Holmes, T., Keiser, G. M., Kolodziejczak, J., Li, J., Lockhart, J. M., Muhlfelder, B., Parkinson, B. W., Salomon, M., Silbergleit, A., Solomonik, V., Stahl, K., Turneaure, J. P., Worden, P. W. IOP PUBLISHING LTD. 2008

    View details for DOI 10.1088/0264-9381/25/11/114002

    View details for Web of Science ID 000255897200003

  • Gravity probe B - Testing Einstein at the limits of engineering 3rd International Conference on Particle and Fundamental Physics in Space BENCZE, W. J., Buchman, S., Clarke, B., DeBra, D., Everitt, C. W., Green, G., Heifetz, M. I., HIPKINS, D. N., Keiser, G. M., Li, J., Lipa, J. A., Muhlfelder, B., Parkinson, B. W., Silbergleit, A. S., Taber, M., Turneaure, J. P., Wang, S. ELSEVIER SCIENCE BV. 2007: 147–152

    View details for DOI 10.1016/j.nuclphysbps.2006.12.090

    View details for Web of Science ID 000245634200023

  • Cascaded Kalman filters for accurate estimation of multiple biases, dead-reckoning navigation, and full state feedback control of ground vehicles IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY Bevly, D. M., Parkinson, B. 2007; 15 (2): 199-208

    View details for DOI 10.1109/TCST.2006.883311

    View details for Web of Science ID 000245247800001

  • Calibration of strapdown magnetometers in magnetic field domain JOURNAL OF AEROSPACE ENGINEERING Gebre-Egziabher, D., Elkaim, G. H., Powel, J. D., Parkinson, B. W. 2006; 19 (2): 87-102

    View details for DOI 10.1061/(ASCE)0893-1321(2006)19:2(87)

    View details for Web of Science ID 000236197900004

  • Gravitational experiments in space: Gravity probe B and STEP 2nd International Conference on Particle and Fundamental Physics in Space Mester, J., Buchman, S., Cruise, A. M., DeBra, D., Dittus, H., Everitt, C. W., Foulon, B., Keiser, G. M., Kent, B. J., Lipa, J., Lockerbie, N., Lockhart, J. M., Loeffler, F., Muhlfelder, B., Parkinson, B., Pegrum, C., Sandford, M., Speake, C. C., Sumner, T. J., Taber, M., Torii, R., Touboul, P., Turneaure, J., Vitale, S., Vodel, W., Worden, P. W. ELSEVIER SCIENCE BV. 2004: 147–154

    View details for DOI 10.1016/j.nuclphysbps.2004.08.024

    View details for Web of Science ID 000225284000025

  • Effect of the error in line of sight unit vector on the accuracy of GPS and pseudolite navigation system COMPUTERS & MATHEMATICS WITH APPLICATIONS Kee, C., Kim, J., So, H., Jun, H., Parkinson, B. 2004; 48 (5-6): 779-787

    View details for DOI 10.1016/j.camwa.2004.02.004

    View details for Web of Science ID 000225514200011

  • A new yaw dynamic model for improved high speed control of a farm tractor JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME Bevly, D. M., Gerdes, J. C., Parkinson, B. W. 2002; 124 (4): 659-667

    View details for DOI 10.1115/1.1515329

    View details for Web of Science ID 000180232400021

  • Credibility of GP-B'S gyroscopic test of general relativity 25th Annual AAS Rocky Mountain Guidance and Control Conference Debra, B., Parkinson, B., Kaiser, G., Everitt, F., Buchman, S. UNIVELT INC. 2002: 271–281

    View details for Web of Science ID 000177552600019

  • Cryogenic gyroscopes for the relativity mission 22nd International Conference on Low Temperature Physics Buchman, S., Everitt, C. W., Parkinson, B., Turneaure, J. P., Keiser, G. M. ELSEVIER SCIENCE BV. 2000: 497–98

    View details for Web of Science ID 000086333700144

  • The Gravity Probe B relativity mission HO 1 Symposium of COSPAR Scientific Commission H Held at the 32nd COSPAR Scientific Assembly Buchman, S., Everitt, C. W., Parkinson, B., Turneaure, J. P., DeBra, D., Bardas, D., Bencze, W., Brumley, R., Gill, D., Gutt, G., Gwo, D. H., Keiser, G. M., Lipa, J., Lockhart, J., Mester, J., Muhlfelder, B., Taber, M., Wang, S., Xiao, Y., Zhou, P. PERGAMON PRESS LTD. 2000: 1177–80

    View details for Web of Science ID 000085558300012

  • Use of global positioning system for gravity probe B relativity experiment and co-experiments HO 1 Symposium of COSPAR Scientific Commission H Held at the 32nd COSPAR Scientific Assembly Uematsu, H., Ward, L., Parkinson, B. W. PERGAMON PRESS LTD. 2000: 1199–1203

    View details for Web of Science ID 000085558300017

  • Gyroscopes and charge control for the Relativity Mission Gravity Probe B HO 1 Symposium of COSPAR Scientific Commission H Held at the 32nd COSPAR Scientific Assembly Buchman, S., Everitt, C. W., Parkinson, B., Turneaure, J. P., Brumley, R., Gill, D., Keiser, G. M., Xiao, Y. PERGAMON PRESS LTD. 2000: 1181–84

    View details for Web of Science ID 000085558300013

  • System identification and adaptive steering of tractors utilizing differential Global Positioning System JOURNAL OF GUIDANCE CONTROL AND DYNAMICS Rekow, A., Bell, T., Bevly, D., Parkinson, B. 1999; 22 (5): 671-674

    View details for Web of Science ID 000082829500008

  • Control of flexible structures using GPS: Methods and experimental results JOURNAL OF GUIDANCE CONTROL AND DYNAMICS Teague, E. H., How, J. P., Parkinson, B. W. 1998; 21 (5): 673-683

    View details for Web of Science ID 000075617900001

  • Realistic autofarming closed-loop tractor control over irregular paths using kinematic GPS JOURNAL OF NAVIGATION Bell, T., O'Connor, M., Jones, V. K., Rekow, A., Elkaim, G., Parkinson, B. 1998; 51 (3): 327-335

    View details for Web of Science ID 000076858800006

  • Autonomous fault detection and removal using GPS carrier phase IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Pervan, B. S., Lawrence, D. G., Parkinson, B. W. 1998; 34 (3): 897-906

    View details for Web of Science ID 000075113400018

  • LMS identification of systems with dynamics and an output deadzone American Control Conference Rekow, A., Jones, V. K., Parkinson, B. IEEE. 1998: 2770–2774

    View details for Web of Science ID 000075568200594

  • Cycle ambiguity estimation for aircraft precision landing using the global positioning system JOURNAL OF GUIDANCE CONTROL AND DYNAMICS Pervan, B. S., Parkinson, B. W. 1997; 20 (4): 681-689

    View details for Web of Science ID A1997XJ43600008

  • Origins, evolution, and future of satellite navigation AIAA 34th Aerospace Sciences Meeting and Exhibit Parkinson, B. W. AMER INST AERONAUT ASTRONAUT. 1997: 11–25

    View details for Web of Science ID A1997WC64500002

  • The application of LEOS to cycle ambiguity resolution on Navstar transmissions for kinematic carrier-phase positioning 10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation Rabinowitz, M., Parkinson, B. W., Cohen, C. E. INST NAVIGATION. 1997: 867–881

    View details for Web of Science ID 000073331000088

  • Flight test evaluation of a prototype local area augmentation system architecture 10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation Pervan, B., LAWRENCE, D., Gromov, K., Opshaug, G., Christie, J., Ko, P. Y., Mitelman, A., Pullen, S., Enge, P., Parkinson, B. INST NAVIGATION. 1997: 1613–1621

    View details for Web of Science ID 000073331000172

  • Operational experience with and improvements to a tunnel-in-the-sky display for light aircraft 10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation Barrows, A. K., Alter, K. W., Enge, P., Parkinson, B. W., Powell, J. D. INST NAVIGATION. 1997: 791–799

    View details for Web of Science ID 000073331000079

  • Real-time CDGPS initialization for land vehicles using a single pseudolite ION National Meeting on Navigation and Positioning in the Information Age O'Connor, M., Bell, T., Elkaim, G., Parkinson, B. INST NAVIGATION. 1997: 717–724

    View details for Web of Science ID 000071004000068

  • System identification and robust control of farm vehicles using CDGPS 10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation Elkaim, G., O'Connor, M., Bell, T., Parkinson, B. INST NAVIGATION. 1997: 1415–1424

    View details for Web of Science ID 000073331000150

  • Optimal augmentation of GPS using inexpensive geosynchronous navigation satellites 10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation Pullen, S., Parkinson, B. INST NAVIGATION. 1997: 1271–1281

    View details for Web of Science ID 000073331000134

  • System identification of an autonomous aircraft using GPS 10th International Technical Meeting of the Satellite Division of the Institute-of-Navigation Evans, J., Elkaim, G., Lo, S., Parkinson, B. INST NAVIGATION. 1997: 1065–1071

    View details for Web of Science ID 000073331000110

  • Comparison of master station and user algorithms for wide-area augmentation system JOURNAL OF GUIDANCE CONTROL AND DYNAMICS Kee, C., Walter, T., Chao, Y. C., Tsai, Y. J., Enge, P., Parkinson, B. W. 1997; 20 (1): 170-176

    View details for Web of Science ID A1997WC64500024

  • Experimental techniques for gyroscope performance enhancement for the gravity probe B relativity mission Symposium on Fundamental Physics in Space (STEP, LISA and Other Space Projects) Buchman, S., Everitt, F., Parkinson, B., Turneaure, J., Keiser, M., Taber, M., Bardas, D., Lockhart, J., Muhlfelder, B., Mester, J., Xiao, Y. M., Gutt, G., Gill, D., Brumley, R., DiDonna, B. IOP PUBLISHING LTD. 1996: A185–A191

    View details for Web of Science ID A1996VW31300026

  • Optimal recursive iterative algorithm for discrete nonlinear least-squares estimation JOURNAL OF GUIDANCE CONTROL AND DYNAMICS Haupt, G. T., Kasdin, N. J., Keiser, G. M., Parkinson, B. W. 1996; 19 (3): 643-649

    View details for Web of Science ID A1996UJ91600020

  • Wide area differential GPS (WADGPS): Future navigation system IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Kee, C. D., Parkinson, B. W. 1996; 32 (2): 795-808

    View details for Web of Science ID A1996UG10900028

  • Applications of superconductivity to space-based gravitational experiments 21st International Conference on Low Temperature Physics (LT 21) Buchman, S., Taber, M., Lockhart, J., Muhlfelder, B., Everitt, C. W., Turneaure, J. P., Parkinson, B. INST PHYSICS ACAD SCI CZECH REPUBLIC. 1996: 2869–2870

    View details for Web of Science ID A1996VL44200223

  • Generation of ionospheric correction and confidence estimates for WAAS 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium Chao, Y. C., Tsai, Y. J., Evans, J., Kee, C., Walter, T., ENGE, P. K., Powell, J. D., Parkinson, B. W. INST NAVIGATION. 1996: 139–146

    View details for Web of Science ID A1996BJ47X00017

  • Control system optimization with unbounded uncertainty: Application to aircraft precision approach using GPS 35th IEEE Conference on Decision and Control Pullen, S. P., ENGE, P. K., Parkinson, B. W. IEEE. 1996: 1339–1340

    View details for Web of Science ID A1996BH27F00290

  • Gyroscope spin axis direction control for the Gravity Probe B satellite 35th IEEE Conference on Decision and Control BENCZE, W. J., Xiao, Y. M., HIPKINS, D. N., Franklin, G. F., Parkinson, B. W. IEEE. 1996: 480–485

    View details for Web of Science ID A1996BH27F00104

  • 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 Kee, C., Walter, T., Enge, P., Parkinson, B. INST NAVIGATION. 1996: 487–495

    View details for Web of Science ID A1996BJ47X00054

  • Effects of local ionospheric anomalies on navigation performance and integrity using WAAS IEEE 1996 Position Location and Navigation Symposium (PLANS 96) Pullen, S. P., Chao, Y. C., ENGE, P. K., Parkinson, B. W. I E E E. 1996: 574–581

    View details for Web of Science ID A1996BF52A00084

  • Integration of wide area DGPS with local area kinematic DGPS IEEE 1996 Position Location and Navigation Symposium (PLANS 96) LAWRENCE, D., Evans, J., Chao, Y. C., Tsai, Y. J., Cohen, C., Walter, T., Enge, P., Powell, J. D., Parkinson, B. I E E E. 1996: 523–529

    View details for Web of Science ID A1996BF52A00077

  • Techniques for real-time control of flexible structures using GPS Annual Rocky Mountain Guidance and Control Conference Teague, E. H., How, J. P., Lawson, L. G., Boerjes, M., Parkinson, B. W. UNIVELT INC. 1996: 429–438

    View details for Web of Science ID A1996BF88Q00029

  • Parity space methods for autonomous fault detection and exclusion using GPS carrier phase IEEE 1996 Position Location and Navigation Symposium (PLANS 96) Pervan, B. S., Lawrence, D. G., Cohen, C. E., Parkinson, B. W. I E E E. 1996: 649–656

    View details for Web of Science ID A1996BF52A00095

  • Kinematic GPS for closed-loop control or farm and construction vehicles 8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95) OConnor, M., Elkaim, G., Parkinson, B. INST NAVIGATION. 1995: 1261–1268

    View details for Web of Science ID A1995BE72A00135

  • 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) Chao, Y. C., Tsai, Y. J., Walter, T., Kee, C. D., Enge, P., Parkinson, B. INST NAVIGATION. 1995: 639–646

    View details for Web of Science ID A1995BE72A00070

  • Flight tests of a 3-D perspective-view glass-cockpit display for general aviation using GPS 8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95) Barrows, A., Enge, P., Parkinson, B., Powell, J. D. INST NAVIGATION. 1995: 1615–1622

    View details for Web of Science ID A1995BE72A00173

  • Global optimization of GPS augmentation architectures using genetic algorithms 8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95) Pullen, S., Enge, P., Parkinson, B. INST NAVIGATION. 1995: 1403–1415

    View details for Web of Science ID A1995BE72A00150

  • GPS receiver design and requirement analysis for the Stanford Gravity Probe B Relativity Mission 8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95) Uematsu, H., Parkinson, B., Lightsey, E. G. INST NAVIGATION. 1995: 237–246

    View details for Web of Science ID A1995BE72A00028

  • Maintaining GPS positioning in steep turns using two antennas 8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95) LAWRENCE, D., COBB, H. S., Cohen, C., Christie, J., Powell, J. D., Parkinson, B. INST NAVIGATION. 1995: 1451–1459

    View details for Web of Science ID A1995BE72A00155

  • Precision landing tests with improved integrity beacon pseudolites 8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95) COBB, H. S., LAWRENCE, D., Pervan, B., Cohen, C., Powell, J. D., Parkinson, B. INST NAVIGATION. 1995: 827–833

    View details for Web of Science ID A1995BE72A00089

  • Autolanding a 737 using GPS and integrity beacons AIAA/IEEE 14th Digital Avionics Systems Conference (14th DASC) Cohen, C. E., COBB, H. S., Lawrence, D. G., Pervan, B. S., Powell, J. D., Parkinson, B. W., Aubrey, G. J., Loewe, W., Ormiston, D., MCNALLY, B. D., Kaufmann, D. N., Wullschleger, V., Swider, R. I E E E. 1995: 474–482

    View details for Web of Science ID A1995BE61E00077

  • Observed GPS signal continuity interruptions 8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95) COBB, H. S., LAWRENCE, D., Christie, J., Walter, T., Chao, Y. C., Powell, J. D., Parkinson, B. INST NAVIGATION. 1995: 793–795

    View details for Web of Science ID A1995BE72A00085

  • The Stanford Relativity Mission ''Niobium Bird'': Verification of the science mission by experimental application of a new nonlinear estimation algorithm Annual Rocky-Mountain Guidance and Control Conference Haupt, G. T., Gutt, G. M., Lockhart, J. M., Kasdin, N. J., Keiser, G. M., Parkinson, B. W. UNIVELT INC. 1995: 3–18

    View details for Web of Science ID A1995BD65K00001

  • Incorporation of orbital dynamics to improve wide-area differential GPS 8th International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GPS-95) Ceva, J., Parkinson, B., Bertiger, W., Muellerschoen, R., Yunck, T. INST NAVIGATION. 1995: 647–659

    View details for Web of Science ID A1995BE72A00071

  • HISTORY AND OPERATION OF NAVSTAR, THE GLOBAL POSITIONING SYSTEM IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Parkinson, B. W. 1994; 30 (4): 1145-1161

    View details for Web of Science ID A1994PM67800029

  • SPACE-FLIGHT TESTS OF ATTITUDE DETERMINATION USING GPS INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS Cohen, C. E., Lightsey, E. G., Parkinson, B. W., FEESS, W. A. 1994; 12 (5): 427-433

    View details for Web of Science ID A1994PR20900003

  • WIDE AREA DIFFERENTIAL GPS AS A FUTURE NAVIGATION SYSTEM IN THE UNITED-STATES IEEE 1994 Position Location and Navigation Symposium Kee, C., Parkinson, B. W. I E E E. 1994: 788–795

    View details for Web of Science ID A1994BA74E00111

  • SIMULATION-BASED EVALUATION OF WAAS PERFORMANCE - RISK AND INTEGRITY FACTORS 7th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation (ION GPS-94) Pullen, S., Enge, P., Parkinson, B. INST NAVIGATION. 1994: 975–983

    View details for Web of Science ID A1994BC96F00108

  • DEVELOPMENT OF A GPS RECEIVER FOR RELIABLE REAL-TIME ATTITUDE DETERMINATION IN SPACE 7th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation (ION GPS-94) Lightsey, E. G., Cohen, C., Parkinson, B. INST NAVIGATION. 1994: 1677–1684

    View details for Web of Science ID A1994BC96F00184

  • 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) Walter, T., Kee, C., Chao, Y. C., Tsai, Y. J., PELED, U., Ceva, J., Barrows, A., Abbot, E., Powell, J. D., Enge, P., Parkinson, B. INST NAVIGATION. 1994: 1537–1546

    View details for Web of Science ID A1994BC96F00169

  • FLIGHT TEST RESULTS OF AUTOCOUPLED APPROACHES USING GPS AND INTEGRITY BEACONS 7th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation (ION GPS-94) Cohen, C., LAWRENCE, D., Pervan, B., COBB, H. S., Barrows, A., Powell, J. D., Parkinson, B., Wullschleger, V., Kalinowski, S. INST NAVIGATION. 1994: 1145–1153

    View details for Web of Science ID A1994BC96F00127

  • KINEMATIC GPS LANDING SYSTEM ARCHITECTURE AND FLIGHT TEST-RESULTS 1994 IEEE National Telesystems Conference/1994 International Microwave Symposium Cobb, S., Cohen, C., Parkinson, B. I E E E. 1994: 101–101

    View details for Web of Science ID A1994BA73D00023

  • AUTONOMOUS INTEGRITY MONITORING FOR GPS-BASED PRECISION LANDING USING GROUND-BASED INTEGRITY BEACON PSEUDOLITES 7th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation (ION GPS-94) Pervan, B., Cohen, C., LAWRENCE, D., COBB, H. S., Powell, J. D., Parkinson, B. INST NAVIGATION. 1994: 609–618

    View details for Web of Science ID A1994BC96F00068

  • System design under uncertainty: Evolutionary optimization of the Gravity Probe-B spacecraft 3rd International Conference on Parallel Problem Solving from Nature (PPSN III) Pullen, S. P., Parkinson, B. W. SPRINGER-VERLAG BERLIN. 1994: 598–607

    View details for Web of Science ID 000256957600058

  • A NEW APPROACH TO GPS INTEGRITY MONITORING USING PRIOR PROBABILITY-MODELS AND OPTIMAL THRESHOLD SEARCH IEEE 1994 Position Location and Navigation Symposium Pullen, S. P., Pervan, B. S., Parkinson, B. W. I E E E. 1994: 739–746

    View details for Web of Science ID A1994BA74E00104

  • ANALYSIS OF ANGULAR VELOCITY DETERMINATION USING GPS 7th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation (ION GPS-94) Montgomery, P., Uematsu, H., Parkinson, B. INST NAVIGATION. 1994: 697–706

    View details for Web of Science ID A1994BC96F00078

  • ANTENNA BASELINE AND LINE BIAS ESTIMATION USING PSEUDOLITES FOR GPS-BASED ATTITUDE DETERMINATION 7th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation (ION GPS-94) Uematsu, H., Parkinson, B. INST NAVIGATION. 1994: 717–726

    View details for Web of Science ID A1994BC96F00080

  • THEORY AND DESIGN OF PSEUDOLITES 1994 National Technical Meeting on Navigating the Earth and Beyond COBB, H. S., Cohen, C. E., Parkinson, B. W. INST NAVIGATION. 1994: 69–75

    View details for Web of Science ID A1994BC49J00010

  • CALIBRATION OF MULTIPATH ERRORS ON GPS PSEUDORANGE MEASUREMENTS 7th International Technical Meeting of the Satellite-Division of the Institute-of-Navigation (ION GPS-94) Kee, C. D., Parkinson, B. INST NAVIGATION. 1994: 353–362

    View details for Web of Science ID A1994BC96F00039

  • ANALYSIS OF SPACECRAFT ATTITUDE MEASUREMENTS USING ONBOARD GPS Annual Rocky Mountain Guidance and Control Conference Lightsey, E. G., Cohen, C. E., FEESS, W. A., Parkinson, B. W. UNIVELT INC. 1994: 521–532

    View details for Web of Science ID A1994BB14W00035

  • Ultra precision machining: Quiet hydraulics and computer support research 1995 NSF Design and Manufacturing Grantees Conference DeBra, D. B., Parkinson, B. W., Hesselink, L., Binford, T. O., Peirce, S., Frants, L., Huang, J. J., Kietzman, J., Velezmoro, M. SOC MANUFACTURING ENGINEERS. 1994: 313–314

    View details for Web of Science ID A1994BG45A00153

  • FLIGHT TESTS OF ATTITUDE DETERMINATION USING GPS COMPARED AGAINST AN INERTIAL MEASUREMENT UNIT National Technical Meeting of the Institute-of-Navigation on Evolution Through Integration of Current and Emerging Systems Cohen, C. E., Parkinson, B. W., MCNALLY, B. D. INST NAVIGATION. 1993: 579–587

    View details for Web of Science ID A1993BA73Z00059

  • THE GRAVITY PROBE-B NIOBIUM BIRD EXPERIMENT - VERIFYING THE DATA REDUCTION SCHEME FOR ESTIMATING THE RELATIVISTIC PRECESSION OF EARTH-ORBITING GYROSCOPES AAS/AIAA Spaceflight Mechanics Meeting Uematsu, H., Parkinson, B. W., Lockhart, J. M., Muhlfelder, B. UNIVELT INC. 1993: 1375–1393

    View details for Web of Science ID A1993BZ64V00084

  • ESTIMATION OF GYROSCOPE POLHODE MOTION USING TRAPPED MAGNETIC-FLUX JOURNAL OF GUIDANCE CONTROL AND DYNAMICS Cohen, C. E., Keiser, G. M., Parkinson, B. W. 1992; 15 (1): 152-158

    View details for Web of Science ID A1992GZ89700019

  • ALGORITHMS AND IMPLEMENTATION OF WIDE AREA DIFFERENTIAL GPS 5TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INST OF NAVIGATION : ION GPS-92 Kee, C., Parkinson, B. W. INST NAVIGATION. 1992: 565–572

    View details for Web of Science ID A1992BY57K00060

  • ESTIMATION OF ABSOLUTE IONOSPHERIC DELAY EXCLUSIVELY THROUGH SINGLE-FREQUENCY GPS MEASUREMENTS 5TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INST OF NAVIGATION : ION GPS-92 Cohen, C. E., Pervan, B., Parkinson, B. W. INST NAVIGATION. 1992: 325–330

    View details for Web of Science ID A1992BY57K00034

  • 2 STUDIES OF HIGH-PERFORMANCE ATTITUDE DETERMINATION USING GPS - GENERALIZING WAHBA PROBLEM FOR HIGH-OUTPUT RATES AND EVALUATION OF STATIC ACCURACY USING A THEODOLITE 5TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INST OF NAVIGATION : ION GPS-92 Cohen, C. E., COBB, H. S., Parkinson, B. W. INST NAVIGATION. 1992: 1197–1203

    View details for Web of Science ID A1992BY57K00128

  • A MAGNETIC ATTITUDE-CONTROL SYSTEM FOR PRECISION POINTING OF THE ROLLING GP-B SPACECRAFT 40TH CONGRESS OF THE INTERNATIONAL ASTRONAUTICAL FEDERATION Parkinson, B. W., Kasdin, N. J. PERGAMON-ELSEVIER SCIENCE LTD. 1990: 477–86

    View details for Web of Science ID A1990EC38700014

  • AIRCRAFT AUTOMATIC LANDING SYSTEMS USING GPS JOURNAL OF NAVIGATION Parkinson, B. W., FITZGIBBON, K. T. 1989; 42 (1): 47-59

    View details for Web of Science ID A1989R948200004

  • ENGINEERING TECHNOLOGY FOR PHYSICS EXPERIMENTS IN SPACE SYMP OF THE COSPAR 27TH PLENARY MEETING ON RELATIVISTIC GRAVITATION DeBra, D. B., Parkinson, B. W. PERGAMON PRESS LTD. 1989: 5–11

    View details for Web of Science ID A1989BQ02M00001

  • THE GRAVITY PROBE-B RELATIVITY GYROSCOPE PROGRAM WORKSHOP ON RELATIVISTIC GRAVITATIONAL EXPERIMENTS IN SPACE Everitt, C. W., Parkinson, B. W., Turneaure, J. P. NASA. 1989: 118–125

    View details for Web of Science ID A1989BP76L00020

  • THE GRAVITY-PROBE-B RELATIVITY GYROSCOPE EXPERIMENT - DEVELOPMENT OF THE PROTOTYPE FLIGHT INSTRUMENT SYMP OF THE COSPAR 27TH PLENARY MEETING ON RELATIVISTIC GRAVITATION Turneaure, J. P., Everitt, C. W., Parkinson, B. W., Bardas, D., BREAKWELL, J. V., Buchman, S., Cheung, W. S., DAVIDSON, D. E., DeBra, D. B., Fairbank, W. M., FETEIH, S., Gill, D., HACKER, R., Keiser, G. M., Lockhart, J. M., Muhlfelder, B., Parmley, R. T., Qin, X. H., Taber, M. A., VANPATTEN, R. A., Xiao, Y. M., Zhou, P. PERGAMON PRESS LTD. 1989: 29–38

    View details for Web of Science ID A1989BQ02M00004