System and method for receiving and decoding global positioning

Details System and method for receiving and decoding global positioning System and method for receiving and decoding global positioning

1991-08-26

1993-12-14

Cain, David C.

Pulse or digital communications

Repeaters

Testing

342386, 342357, H04K 100

Patent

active

052710343

ABSTRACT:
A system receives and demodulates spread spectrum positional signals such as those generated by a GPS satellite by frequency shifting the signals substantially to baseband and utilizing digital signal processing techniques. The digital signal processing techniques utilized can be implemented by a standard audio digital signal processor due to the circuit design. The spread spectrum signal is frequency shifted substantially to baseband, forming in-phase and quadrature components which are processed substantially in parallel. Pseudo-range, carrier phase and doppler frequency, and the underlying data are thereby derived.

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