System and method for high dynamic acquisition and tracking...

Details System and method for high dynamic acquisition and tracking... System and method for high dynamic acquisition and tracking...

2005-11-30

2011-10-04

Phan, Dao L (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C342S357650

Reexamination Certificate

active

08031112

ABSTRACT:
A method of acquiring a signal includes generating a first set of acquired signal power values comprising an acquired signal power value for each of a plurality of Doppler bins over a first predetection integration time (PIT) interval, and generating a second set of acquired signal power values comprising an acquired signal power value for each of the plurality of Doppler bins over a second subsequent PIT interval. The first and the second sets are used to generate at least three additional sets of acquired signal power values. A new set is generated by selecting the maximum of the summations for each Doppler bin from the three additional sets, and a Doppler shift is identified from the Doppler bin having the maximum summation value. The output may be used to initialize a first and a second extended Kalman filters for tracking a carrier signal and a code signal, respectively.

REFERENCES:
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patent: 6535114 (2003-03-01), Suzuki et al.
patent: 6535833 (2003-03-01), Syrjarinne
patent: 6664923 (2003-12-01), Ford
patent: 2005/0179580 (2005-08-01), Cong et al.
patent: 2006/0015250 (2006-01-01), Kim

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