Enhanced Precision Reference Systems

Robert S. Lawrence, Richard Pearson, Jerry Sanchez and Brent Neal, Richard Gurr and Neal Carlson

Abstract:	The 746th Test Squadron (Holloman AFB) has developed and utilized the CIGTF High Accuracy Post-processing Reference System (CHAPS). CHAPS is a multi-sensor navigation reference system used to evaluate position, velocity, and attitude performance of Global Positioning System (GPS) receivers, Inertial Navigation Systems (INS), and embedded GPS/INS navigation systems on large vehicles and aircraft. Reference data is processed post-test with accuracy ranges from a meter to sub-meter depending on the reference configuration and test environment (profile, trajectory dynamics, GPS jamming, etc.). With the evolution of computer processing capabilities, component/system design enhancements, and future test requirements; the GPS Aided Inertial Navigation Reference (GAINR) system developed by the Air Force Flight Test Center (Edwards AFB) offers more potential and utilization flexibility (test beds and post- processing time). The basic sensor assembly is an embedded GPS/INS navigation system post-processed with Multi-sensor Optimal Smoothing Estimation Software (MOSES). Future updates will incorporate CHAPS capability of enhanced accuracy (sub-meter) in a GPS non-jamming/jamming environment. This paper will present the GAINR capabilities, characterization process, and development methodology; presently accomplished and future development plans.
Published in:	Proceedings of the 57th Annual Meeting of The Institute of Navigation (2001) June 11 - 13, 2001 Albuquerque, NM
Pages:	304 - 309
Cite this article:	Lawrence, Robert S., Pearson, Richard, Sanchez, Jerry, Neal, Brent, Gurr, Richard, Carlson, Neal, "Enhanced Precision Reference Systems," Proceedings of the 57th Annual Meeting of The Institute of Navigation (2001), Albuquerque, NM, June 2001, pp. 304-309.
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