Ada Real-Time GPS/INS Simulation Approach to System Development

David A. Desch, James J. Hvizd

Abstract:	A software development approach employing Computer Aided Software Engineering (CASE) based object oriented design methodologies and the Ada programming language has been used to create a real-time simulation of an integrated Global Positioning System/Inertial Navigation System (CPS/INS) navigator for a low-cost tactical weapon. The simulation, with over 10,000 lines of Ada code, contains detailed models of a Fiber Optic Gyro (FOG) based IMU, CPS space and user segments, Kalman Filter (KF), and navigation processing algorithms. United Technologies Corporation Advanced Systems Division (UTC/ASD) has found the Ada language to be an efficient tool for the construction and management of large simulations. The simulation is the first step in a low-cost CPS/INS development program that applies an Ada based software and systems integration methodology conceived at UTC/ASD. This paper describes the GPS/INS simulation, highlighting Ada-unique aspects of the design process. Further, the UTC/ASD software development philosophy and systems integration methodology is presented. A brief description of the CPS/INS system hardware design is also provided.
Published in:	Proceedings of the 2nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1989) September 27 - 29, 1989 The Broadmoor Hotel Colorado Spring, CO
Pages:	253 - 257
Cite this article:	Desch, David A., Hvizd, James J., "Ada Real-Time GPS/INS Simulation Approach to System Development," Proceedings of the 2nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1989), Colorado Spring, CO, September 1989, pp. 253-257.
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