CPC G01S 19/37 (2013.01) | 20 Claims |
1. A navigation system comprising:
a global positioning system (GPS) receiver configured to acquire and track received GPS signals;
a software defined radio (SDR) configured to process received communication signals that include timing data, the SDR further configured to calculate position and navigation data based on a combination of the processed communication signals and the tracked GPS signals provided by the GPS receiver; and
a system timer configured to provide a common time base for use by the GPS receiver and the SDR.
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