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James Farrell

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James L. Farrell is the principal in Vigil, Inc., a senior member of IEEE, and a registered professional engineering consultant in Maryland. He received a Ph.D. from the University of Maryland.

His professional career includes two years each at Honeywell and Bendix-Pacific, plus 31 years at Westinghouse in design/simulation/ validation of estimation algorithms for navigation and tracking, fire control system design, test data generation for bench validation, and INS update and transfer alignment algorithm design.

During that time, Farrell worked on program development for USAF-WPAFB (F/C evaluation) and NASA (estimation of satellite attitude, orbit determination) as well as missile guidance optimization and digital communication design.

He is author of GNSS Aided Navigation and Tracking (2007; NavtechGPS distributor), Integrated Aircraft Navigation (Academic Press, 1976). Active in RTCA for several years, he served as co-chairman of the GPS Integrity Fault Detection and Isolation Working Group within SC-159. He has taught various tutorials and courses at Marquette and UCLA.

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