Indoor Geo-Location with Cellular RF Pattern Matching and LEO Communication Satellite Signals

Di Qiu, David S. De Lorenzo and Tarun Bhattacharya

Abstract:	In this paper, we propose to integrate LEO communication satellite signals with terrestrial cellular signals for navigation E-911 location-based services in urban canyon and indoors. The FCC’s E-911 Phase II mandate requires a position accuracy of within 50 meters for 67 percent of emergency calls and 150 meters for 95 percent of calls. A pseudorange rate algorithm is applied to LEO communication satellite signals to obtain a position estimate while cellular signals use an RF pattern matching technique based on Polaris Wireless Location Signatures™ (WLS). The two location systems can complement each other to generate a more robust position solution: LEO communication satellite signals have high power and global coverage whereas the ground-based cellular signals can achieve 100% yield and fast time-tofirst- fix. Finally, this paper evaluates hybrid system performance based on position-domain minimumvariance combination using high-fidelity numerical simulations.
Published in:	Proceedings of the 2013 International Technical Meeting of The Institute of Navigation January 29 - 27, 2013 Catamaran Resort Hotel San Diego, California
Pages:	726 - 733
Cite this article:	Qiu, Di, De Lorenzo, David S., Bhattacharya, Tarun, "Indoor Geo-Location with Cellular RF Pattern Matching and LEO Communication Satellite Signals," Proceedings of the 2013 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2013, pp. 726-733.
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