High Fidelity GPS Receiver Simulation

Andrew C. Seitz, Michael S. Braasch

Abstract:	As the race for improved performance using GPS technology continues, computer simulations of GPS receivers are becoming more important. Computer simulations provide an alternative to limited theoretical mathematical modeling and costly prototype construction. These simulations can be used to provide insight on many timely receiver design issues including multipath mitigation, interference effects, and jamming. However, before computer simulations can be used extensively, a thorough validation procedure must be completed. A high fidelity GPS receiver model was developed at Ohio University using the Signal Processing WorkSystem (SPW - ) software package as a design platform. SPW - utilizes a graphical-user-interface that provides an easy to use environment for manipulation of the modeling parameters. The Ohio University model provides high fidelity by emulating the low-level function of the receiver. This is achieved by modeling the code and carrier tracking loops and providing input signals generated by manipulation of various communications and filtering blocks within the SPW - environment. This paper presents issues regarding the operation, layout, and uses of the high fidelity GPS receiver model.
Published in:	Proceedings of the 54th Annual Meeting of The Institute of Navigation (1998) June 1 - 3, 1998 The Adams Mark Hotel Denver, CO
Pages:	573 - 581
Cite this article:	Seitz, Andrew C., Braasch, Michael S., "High Fidelity GPS Receiver Simulation," Proceedings of the 54th Annual Meeting of The Institute of Navigation (1998), Denver, CO, June 1998, pp. 573-581.
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