Satellite-borne GPS receiving system visible in total space
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The invention provides a satellite-borne GPS receiving system visible in total space. The satellite-borne GPS receiving system comprises GPS antennas, anti-interference filters, low-noise amplifiers, a combiner, a surface acoustic wave filter, a radio frequency front end receiver, a channel correlator and a central processing unit. The central processing unit captures and traces a telegraph text output by the channel correlator. When N or more GPS navigation satellites are captured, the GPS navigation satellites within the range of +/-delta degrees of the perpendicular bisector of the roots of the antennas are calculated according to satellite body pose information and installation angles of the GPS antennas, the GPS navigation satellites within the range of +/-delta degrees are sequentially removed according to deviation angles by which the GPS navigation satellites deviate from the perpendicular bisector from small to large, and it is ensured that the number of the remaining GPS navigation satellites is larger than or equal to N after removal. The position information and time information of a satellite body are calculated through telegraph texts of the remaining GPS navigation satellites. By means of the system, the GPS satellites can still be stably captured when a satellite conducts non-earth-oriented or large-angle swinging, and the accurate positioning and time service functions are achieved.
[1] Luke B. Winternitz,et al. A GPS Receiver for High-Altitude Satellite Navigation , 2009, IEEE Journal of Selected Topics in Signal Processing.