Use of a Software Radio to Evaluate Signals of Opportunity for Navigation

J.A. McEllroy, J.F. Raquet, M.A. Temple

Abstract:	This paper describes field test results from a software defined radio (SDR) receiver used to evaluate navigation signals of opportunity in the AM transmission band. The SDR is based upon the Gnu Radio Universal Software Radio Peripheral (USRP), which provides a great deal of signal processing and data storage flexibility. The signals are evaluated in terms of signal strength, measurement accuracy (related to correlation peak shape and signal to noise ratio), signal diversity (i.e., number of signals available), and apparent multipath effects in an outdoor environment. Preliminary results show that position accuracies on the order of 20 meters are achievable.
Published in:	Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006) September 26 - 29, 2006 Fort Worth Convention Center Fort Worth, TX
Pages:	126 - 133
Cite this article:	McEllroy, J.A., Raquet, J.F., Temple, M.A., "Use of a Software Radio to Evaluate Signals of Opportunity for Navigation," Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006), Fort Worth, TX, September 2006, pp. 126-133.
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