The New and Improved GIANT Model

Greg Gerten and Gary Green

Abstract:	The Global Positioning System (GPS) is a space-based radio navigation system that provides accurate, continuous, worldwide service to passive users. GIANT is a one GPS equipped platform versus many interference sources, constructive and repeatable simulation that is typically applied to determine the impact of navigation performance on operational effectiveness. GIANT runs on a PC, is US Government-owned, includes a user-friendly graphical interface for setup and execution, and runs much faster than real-time. GIANT is under formal GPS community wide configuration control, has a growing user base, and is sponsored by the GPS Joint Program Office (SMC/CZ), Los Angeles Air Force Base California. Lt. Joseph Causey (SMC/CZE) is the Model Manager, and more information can be obtained from the GIANT website: http://giant.veridian.com. The release of Version 1.1.2 (V1.1.2) occurred in August 2000, and V2.0.0 is planned for an April 2001 release. This paper will detail the current V2.0.0 efforts for multiple frequencies and codes, M-code, Jammer-to-Signal Ratio (J/S), acquisition and variable User-Equivalent-Range-Error (UERE).
Published in:	Proceedings of the 2001 National Technical Meeting of The Institute of Navigation January 22 - 24, 2001 Westin Long Beach Hotel Long Beach, CA
Pages:	216 - 222
Cite this article:	Gerten, Greg, Green, Gary, "The New and Improved GIANT Model," Proceedings of the 2001 National Technical Meeting of The Institute of Navigation, Long Beach, CA, January 2001, pp. 216-222.
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