Size, power, and cost reduced by exploiting commonality. Digital signal processor for Global Positioning System (GPS) receiver set to operate in "code" mode when P code known, or in "codeless" mode when P code not known. In codeless mode, processor performs full-quadrature processing, resulting in signal-to-noise ratio (SNR) 6 dB greater than SNR's of processors not performing at full quadrature.
Digital GPS-Signal Processor With P-Code/No-P-Code Option
NASA Tech Briefs ; 18 , 5
1994-05-01
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Digital GPS-Signal Processor With P-Code-No-P-Code Option
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