Method and apparatus for receiving army and civil dual-purpose global satellite navigation system multi-module radio frequency
A global satellite navigation and multi-mode radio frequency technology, applied in the field of radio frequency receivers, can solve problems such as difficult implementation, too high design specifications of baseband analog-to-digital converters, and limited radio frequency front-end spectrum characteristics, etc., to achieve compatibility and The effects of coordination, simple control logic, and high module reuse rate
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[0033] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0034]GNSS systems include the American Global Positioning System (GPS), the Russian global satellite navigation system GLONASS, the European Galileo satellite positioning system (Galileo), and the developing Chinese Beidou positioning system. The GNSS system in use basically includes two kinds of signals, one is a narrow-band navigation signal with lower precision and lower dynamic performance for civil use, such as the global positioning system GPS-L1-CA (center frequency 1540*f0, bandwidth 2*f0, f0=1.023MHz, the same below), global positioning system GPS-L1-CS (center frequency 1200*f0, bandwidth 2*f0), China Beidou positioning system signal BD-B1 under planning (center frequency 1526*f0, bandwidth 2 *f0), Beidou positioning system BD-B2 (center frequency 1180*f0, bandwidth 2*f0), Galileo navigation system Galileo-E1-BOC (1,1) (center frequen...
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