Signal folding coherent acquisition for weak global...

Details Signal folding coherent acquisition for weak global... Signal folding coherent acquisition for weak global...

2005-12-13

2005-12-13

Liu, Shuwang (Department: 2634)

Pulse or digital communications

Receivers

Angle modulation

C375S147000, C375S130000, C370S335000, C370S252000

Reexamination Certificate

active

06975690

ABSTRACT:
A simplified, weak GPS C/A code coherent acquisition method. When performing GPS signal acquisition, the strength of a signal received at a GPS receiver having an outside antenna is generally sufficiently strong such that only 1 ms of data needs to be used in acquisition to find the signal. However, for weak signals received at a GPS receiver, when the antenna is inside a building or vehicle, for example, a long record of data is needed for acquisition. The present invention reduces the calculation burden for GPS signal acquisition for a weak signal.

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