Satellite search methods for improving time to first fix in a GP

Details Satellite search methods for improving time to first fix in a GP Satellite search methods for improving time to first fix in a GP

1993-07-22

1995-03-28

Teska, Kevin J.

Boots, shoes, and leggings

364449, 342357, G01S 504, H04B 708

Patent

active

054023475

ABSTRACT:
An embodiment of the present invention includes a GPS receiver capable of concurrently tracking up to eight GPS satellites. The GPS receiver comprises computer-implemented methods for parallel search, split search and precomputation. The parallel search method causes the apparent Doppler frequency spectrum to be sectioned into several segments and a first GPS satellite signal is searched for in parallel in each of the segments. When the first GPS fix is not found after a predetermined time has expired, a split search is begun.

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patent: 5192957 (1992-03-01), Kennedy

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