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


  • Professor Emeritus, Aeronautics and Astronautics

Honors & Awards


  • Member, Sigma Xi (1961)
  • Member, Tau Beta Pi (MIT Chapter) (1961)
  • Defense Department Superior Performance Award, NAVSTAR (GPS) GPO (1977)
  • Gold Medal Award, Royal Inst. of Navigation (1983)
  • Engineer of the Year for Silicon Valley, AIAA (1985)
  • Kirschner Award, IEEE (1986)
  • Thurlow Award, ION (1986)
  • Burka Award, ION (1987)
  • Fellow, American Institute of Aeronautics & Astronautics (AIAA) (1990)
  • Fellow, The Royal Institute of Navigation (1990)
  • Member, National Academy of Engineers (NAE) (1990)
  • Johannes Kepler Award, ION (1991)
  • Distinguished Public Service Medal, NASA (1994)
  • Pioneer Award, AESS/IEEE (1994)
  • Edward C Wells Professor of Aeronautics & Astronautics, Stanford University (1995)
  • GPS Hall of Fame Award, NAVSTAR Joint Program Office (1995)
  • Magellanic Premium Award, American Philosophical Society (1997)
  • Member, International Academy of Astronautics (IAA) (1997)
  • Hall of FAME, NASA (1998)
  • Sperry Award, IEEE (1998)
  • Fellow, The Institute of Navigation (ION) (1999)
  • Discover Innovation Award for Communications, Discover Magazine (2002)
  • Simon Ramo Award, IEEE (2002)
  • Charles Stark Draper Prize, NAE (2003)
  • ASME Gold Medal Award, American Society of Mechanical Engineers (2004)
  • Fellow, IEEE (2004)
  • Member, National Inventors Hall of Fame (2004)
  • Goddard Astronautics Award, AIAA (2006)
  • Honorary Fellow, Royal Institute of Navigation (2015)
  • Member, ASME

Boards, Advisory Committees, Professional Organizations


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

Professional Education


  • PhD, Stanford University (1966)

2016-17 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)
  • 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 PROCEEDINGS OF THE 23RD INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS 2010) Parkinson, B. 2010: 1-45
  • Gravity Probe B Data Analysis 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
  • 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
  • Gravity Probe B data analysis status and potential for improved accuracy of scientific results 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
  • Gravity probe B - Testing Einstein at the limits of engineering 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
  • 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
  • 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
  • Gravitational experiments in space: Gravity probe B and STEP 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
  • 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
  • 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 GUIDANCE AND CONTROL 2002 Debra, B., Parkinson, B., Kaiser, G., Everitt, F., Buchman, S. 2002; 111: 271-281
  • Cryogenic gyroscopes for the relativity mission Buchman, S., Everitt, C. W., Parkinson, B., Turneaure, J. P., Keiser, G. M. ELSEVIER SCIENCE BV. 2000: 497-498
  • The Gravity Probe B relativity mission FUNDAMENTAL PHYSICS IN SPACE 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. 2000; 25 (6): 1177-1180
  • Use of global positioning system for gravity probe B relativity experiment and co-experiments FUNDAMENTAL PHYSICS IN SPACE Uematsu, H., Ward, L., Parkinson, B. W. 2000; 25 (6): 1199-1203
  • Gyroscopes and charge control for the Relativity Mission Gravity Probe B FUNDAMENTAL PHYSICS IN SPACE Buchman, S., Everitt, C. W., Parkinson, B., Turneaure, J. P., Brumley, R., Gill, D., Keiser, G. M., Xiao, Y. 2000; 25 (6): 1181-1184
  • 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
  • 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
  • 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
  • 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
  • LMS identification of systems with dynamics and an output deadzone PROCEEDINGS OF THE 1998 AMERICAN CONTROL CONFERENCE, VOLS 1-6 Rekow, A., Jones, V. K., Parkinson, B. 1998: 2770-2774
  • 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
  • Origins, evolution, and future of satellite navigation Parkinson, B. W. AMER INST AERONAUT ASTRONAUT. 1997: 11-25
  • The application of LEOS to cycle ambiguity resolution on Navstar transmissions for kinematic carrier-phase positioning ION GPS-97, PT 1 AND 2 Rabinowitz, M., Parkinson, B. W., Cohen, C. E. 1997: 867-881
  • Operational experience with and improvements to a tunnel-in-the-sky display for light aircraft ION GPS-97, PT 1 AND 2 Barrows, A. K., Alter, K. W., Enge, P., Parkinson, B. W., Powell, J. D. 1997: 791-799
  • Flight test evaluation of a prototype local area augmentation system architecture ION GPS-97, PT 1 AND 2 Pervan, B., LAWRENCE, D., Gromov, K., Opshaug, G., Christie, J., Ko, P. Y., Mitelman, A., Pullen, S., Enge, P., Parkinson, B. 1997: 1613-1621
  • System identification of an autonomous aircraft using GPS ION GPS-97, PT 1 AND 2 Evans, J., Elkaim, G., Lo, S., Parkinson, B. 1997: 1065-1071
  • Optimal augmentation of GPS using inexpensive geosynchronous navigation satellites ION GPS-97, PT 1 AND 2 Pullen, S., Parkinson, B. 1997: 1271-1281
  • System identification and robust control of farm vehicles using CDGPS ION GPS-97, PT 1 AND 2 Elkaim, G., O'Connor, M., Bell, T., Parkinson, B. 1997: 1415-1424
  • Real-time CDGPS initialization for land vehicles using a single pseudolite PROCEEDINGS OF THE NATIONAL TECHNICAL MEETING - NAVIGATION AND POSITIONING IN THE INFORMATION AGE O'Connor, M., Bell, T., Elkaim, G., Parkinson, B. 1997: 717-724
  • 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
  • Experimental techniques for gyroscope performance enhancement for the gravity probe B relativity mission 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
  • 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
  • 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
  • Applications of superconductivity to space-based gravitational experiments 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
  • Generation of ionospheric correction and confidence estimates for WAAS 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
  • Control system optimization with unbounded uncertainty: Application to aircraft precision approach using GPS Pullen, S. P., ENGE, P. K., Parkinson, B. W. IEEE. 1996: 1339-1340
  • Gyroscope spin axis direction control for the Gravity Probe B satellite BENCZE, W. J., Xiao, Y. M., HIPKINS, D. N., Franklin, G. F., Parkinson, B. W. IEEE. 1996: 480-485
  • Quality control algorithms on Wide-area Reference Station for WAAS Kee, C., Walter, T., Enge, P., Parkinson, B. INST NAVIGATION. 1996: 487-495
  • Effects of local ionospheric anomalies on navigation performance and integrity using WAAS Pullen, S. P., Chao, Y. C., ENGE, P. K., Parkinson, B. W. I E E E. 1996: 574-581
  • Integration of wide area DGPS with local area kinematic DGPS 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: 523–29
  • Techniques for real-time control of flexible structures using GPS Teague, E. H., How, J. P., Lawson, L. G., Boerjes, M., Parkinson, B. W. UNIVELT INC. 1996: 429-438
  • Parity space methods for autonomous fault detection and exclusion using GPS carrier phase Pervan, B. S., Lawrence, D. G., Cohen, C. E., Parkinson, B. W. I E E E. 1996: 649-656
  • Incorporation of orbital dynamics to improve wide-area differential GPS Ceva, J., Parkinson, B., Bertiger, W., Muellerschoen, R., Yunck, T. INST NAVIGATION. 1995: 647-659
  • An algorithm for inter-frequency bias calibration and application to WAAS ionosphere modeling Chao, Y. C., Tsai, Y. J., Walter, T., Kee, C. D., Enge, P., Parkinson, B. INST NAVIGATION. 1995: 639-646
  • GPS receiver design and requirement analysis for the Stanford Gravity Probe B Relativity Mission PROCEEDINGS OF ION GPS-95 - THE 8TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION, PTS 1 AND 2 Uematsu, H., Parkinson, B., Lightsey, E. G. 1995: 237-246
  • Global optimization of GPS augmentation architectures using genetic algorithms Pullen, S., Enge, P., Parkinson, B. INST NAVIGATION. 1995: 1403-1415
  • Maintaining GPS positioning in steep turns using two antennas LAWRENCE, D., COBB, H. S., Cohen, C., Christie, J., Powell, J. D., Parkinson, B. INST NAVIGATION. 1995: 1451-1459
  • Precision landing tests with improved integrity beacon pseudolites COBB, H. S., LAWRENCE, D., Pervan, B., Cohen, C., Powell, J. D., Parkinson, B. INST NAVIGATION. 1995: 827-833
  • The Stanford Relativity Mission ''Niobium Bird'': Verification of the science mission by experimental application of a new nonlinear estimation algorithm Haupt, G. T., Gutt, G. M., Lockhart, J. M., Kasdin, N. J., Keiser, G. M., Parkinson, B. W. UNIVELT INC. 1995: 3-18
  • Autolanding a 737 using GPS and integrity beacons 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
  • Observed GPS signal continuity interruptions COBB, H. S., LAWRENCE, D., Christie, J., Walter, T., Chao, Y. C., Powell, J. D., Parkinson, B. INST NAVIGATION. 1995: 793-795
  • Kinematic GPS for closed-loop control or farm and construction vehicles OConnor, M., Elkaim, G., Parkinson, B. INST NAVIGATION. 1995: 1261-1268
  • HISTORY AND OPERATION OF NAVSTAR, THE GLOBAL POSITIONING SYSTEM IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS Parkinson, B. W. 1994; 30 (4): 1145-1161
  • 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
  • WIDE AREA DIFFERENTIAL GPS AS A FUTURE NAVIGATION SYSTEM IN THE UNITED-STATES Kee, C., Parkinson, B. W. I E E E. 1994: 788-795
  • SIMULATION-BASED EVALUATION OF WAAS PERFORMANCE - RISK AND INTEGRITY FACTORS Pullen, S., Enge, P., Parkinson, B. INST NAVIGATION. 1994: 975-983
  • DEVELOPMENT OF A GPS RECEIVER FOR RELIABLE REAL-TIME ATTITUDE DETERMINATION IN SPACE PROCEEDINGS OF ION GPS-94: 7TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION, PTS 1 AND 2 Lightsey, E. G., Cohen, C., Parkinson, B. 1994: 1677-1684
  • System design under uncertainty: Evolutionary optimization of the Gravity Probe-B spacecraft PARALLEL PROBLEM SOLVING FROM NATURE - PPSN III - INTERNATIONAL CONFERENCE ON EVOLUTIONARY COMPUTATION, PROCEEDINGS Pullen, S. P., Parkinson, B. W. 1994; 866: 598-607
  • FLIGHT TEST RESULTS OF AUTOCOUPLED APPROACHES USING GPS AND INTEGRITY BEACONS 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
  • KINEMATIC GPS LANDING SYSTEM ARCHITECTURE AND FLIGHT TEST-RESULTS Cobb, S., Cohen, C., Parkinson, B. I E E E. 1994: 101-101
  • AUTONOMOUS INTEGRITY MONITORING FOR GPS-BASED PRECISION LANDING USING GROUND-BASED INTEGRITY BEACON PSEUDOLITES Pervan, B., Cohen, C., LAWRENCE, D., COBB, H. S., Powell, J. D., Parkinson, B. INST NAVIGATION. 1994: 609-618
  • CALIBRATION OF MULTIPATH ERRORS ON GPS PSEUDORANGE MEASUREMENTS Kee, C. D., Parkinson, B. INST NAVIGATION. 1994: 353-362
  • A NEW APPROACH TO GPS INTEGRITY MONITORING USING PRIOR PROBABILITY-MODELS AND OPTIMAL THRESHOLD SEARCH Pullen, S. P., Pervan, B. S., Parkinson, B. W. I E E E. 1994: 739-746
  • ANALYSIS OF ANGULAR VELOCITY DETERMINATION USING GPS Montgomery, P., Uematsu, H., Parkinson, B. INST NAVIGATION. 1994: 697-706
  • ANTENNA BASELINE AND LINE BIAS ESTIMATION USING PSEUDOLITES FOR GPS-BASED ATTITUDE DETERMINATION Uematsu, H., Parkinson, B. INST NAVIGATION. 1994: 717-726
  • THEORY AND DESIGN OF PSEUDOLITES COBB, H. S., Cohen, C. E., Parkinson, B. W. INST NAVIGATION. 1994: 69-75
  • ANALYSIS OF SPACECRAFT ATTITUDE MEASUREMENTS USING ONBOARD GPS Lightsey, E. G., Cohen, C. E., FEESS, W. A., Parkinson, B. W. UNIVELT INC. 1994: 521-532
  • Ultra precision machining: Quiet hydraulics and computer support research 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
  • FLIGHT TESTS OF ATTITUDE DETERMINATION USING GPS COMPARED AGAINST AN INERTIAL MEASUREMENT UNIT Cohen, C. E., Parkinson, B. W., MCNALLY, B. D. INST NAVIGATION. 1993: 579-587
  • THE GRAVITY PROBE-B NIOBIUM BIRD EXPERIMENT - VERIFYING THE DATA REDUCTION SCHEME FOR ESTIMATING THE RELATIVISTIC PRECESSION OF EARTH-ORBITING GYROSCOPES Uematsu, H., Parkinson, B. W., Lockhart, J. M., Muhlfelder, B. UNIVELT INC. 1993: 1375-1393
  • 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
  • ESTIMATION OF ABSOLUTE IONOSPHERIC DELAY EXCLUSIVELY THROUGH SINGLE-FREQUENCY GPS MEASUREMENTS PROCEEDINGS OF ION GPS-92 Cohen, C. E., Pervan, B., Parkinson, B. W. 1992: 325-330
  • ALGORITHMS AND IMPLEMENTATION OF WIDE AREA DIFFERENTIAL GPS PROCEEDINGS OF ION GPS-92 Kee, C., Parkinson, B. W. 1992: 565-572
  • 2 STUDIES OF HIGH-PERFORMANCE ATTITUDE DETERMINATION USING GPS - GENERALIZING WAHBA PROBLEM FOR HIGH-OUTPUT RATES AND EVALUATION OF STATIC ACCURACY USING A THEODOLITE PROCEEDINGS OF ION GPS-92 Cohen, C. E., COBB, H. S., Parkinson, B. W. 1992: 1197-1203
  • A MAGNETIC ATTITUDE-CONTROL SYSTEM FOR PRECISION POINTING OF THE ROLLING GP-B SPACECRAFT Parkinson, B. W., Kasdin, N. J. PERGAMON-ELSEVIER SCIENCE LTD. 1990: 477-486
  • AIRCRAFT AUTOMATIC LANDING SYSTEMS USING GPS JOURNAL OF NAVIGATION Parkinson, B. W., FITZGIBBON, K. T. 1989; 42 (1): 47-59
  • THE GRAVITY-PROBE-B RELATIVITY GYROSCOPE EXPERIMENT - DEVELOPMENT OF THE PROTOTYPE FLIGHT INSTRUMENT 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. 1989; 9: 29-38
  • ENGINEERING TECHNOLOGY FOR PHYSICS EXPERIMENTS IN SPACE RELATIVISTIC GRAVITATION DeBra, D. B., Parkinson, B. W. 1989; 9: 5-11
  • THE GRAVITY PROBE-B RELATIVITY GYROSCOPE PROGRAM RELATIVISTIC GRAVITATIONAL EXPERIMENTS IN SPACE Everitt, C. W., Parkinson, B. W., Turneaure, J. P. 1989; 3046: 118-125