NASA NTRS · 19940000252
Digital GPS-Signal Processor With P-Code/No-P-Code Option
Abstract
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.
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Thomas, J. Brooks, Srinivasan, Jeffrey M.. 1994-05-01. Digital GPS-Signal Processor With P-Code/No-P-Code Option. https://ntrs.nasa.gov/citations/19940000252
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