Patent ID: 8031112

Claim:
A method of acquiring a signal in a GPS receiver in a high dynamic environment comprising: generating a first set of acquired signal power values, the first set comprising an acquired signal power value for each Doppler bin in a plurality of Doppler bins over a first predetection integration time (PIT) interval for processing a digital signal; generating a second set of acquired signal power values, the second set comprising an acquired signal power value for each Doppler bin in the plurality of Doppler bins over a second subsequent predetection integration time (PIT) interval for processing the digital signal; generating at least three additional sets of acquired signal power values from the first and the second sets, one of the additional sets of acquired signal power values is a set of summations of the acquired power value for each Doppler bin in the first set of values with the acquired power value for the Doppler bin in the second set of acquired power signal values, another of the additional sets of acquired signal power values correspond to a set of summations of the acquired power value for each Doppler bin in the first set of acquired power values with the acquired power value for the Doppler bin in the second set that precedes the Doppler bin in the first set of acquired power values, and the other of the additional sets of acquired signal power values is a set of summations of the acquired power value for each Doppler bin in the first set of acquired power values with the acquired power value for the Doppler bin in the second set that follows the Doppler bin in the first set of acquired power values; generating a new set of acquired power values by selecting the maximum of the summations for each Doppler bin from the three additional sets; and identifying a Doppler shift for a signal acquisition in response to an acquired power value in the new set of acquired power values being greater than a threshold value.