Multipath Modeling for Airborne and Ground Based Receivers Utilizing Flight Test Data

Jason G. Wozniak, Timothy Murphy

Abstract:	In the summer of 1995, Boeing, in conjunction with a number of industry partners conducted a series of flight tests. The flight test program was designed to supply data to support a larger overall program which focuses on the development of requirements for Satellite Navigation Precision Approach Systems. Data from the flight test program is intended for use in validation of simulation capabilities currently under development. This document presents the results of analysis performed on data collected from a vendor’s ground stations during the flight test. The performance of the ground stations with respect to multipath and thermal noise is of particular interest, since this may be the dominant error in a differential GPS landing system. The flight test was conducted in benign conditions with good satellite geometry and a low multipath environment. Therefore, these results do not represent the performance of the receivers under worst-case conditions. The relationship between multipath and elevation angle is analyzed. The characteristics of the dynamic and bias-like components of the thermal noise and multipath are also presented.
Published in:	Proceedings of the 1997 National Technical Meeting of The Institute of Navigation January 14 - 16, 1997 Loews Santa Monica Hotel Santa Monica, CA
Pages:	253 - 259
Cite this article:	Wozniak, Jason G., Murphy, Timothy, "Multipath Modeling for Airborne and Ground Based Receivers Utilizing Flight Test Data," Proceedings of the 1997 National Technical Meeting of The Institute of Navigation, Santa Monica, CA, January 1997, pp. 253-259.
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