CPS transform correlation receiver and method

Details CPS transform correlation receiver and method CPS transform correlation receiver and method

1989-11-27

1991-03-05

Barron, Jr., Gilberto

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

Directive

Including a satellite

H04B 7216

Patent

active

049981110

ABSTRACT:
A method for rapid acquisition of multiple GPS signals builds upon fast Fourier transformation of input GPS signals to simultaneously track multiple satellites and derive psuedorange measurements that are suitable for navigation solution. The method utilizes 2M samples of the reference signal with N samples of the signal set from the satellites (one millisecond of actual data) to directly compute the fractional psuedorange values for four (4) or more satellites. The FFT process is incorporated with a process to determine an integer psuedorange. The integer psuedorange is then combined with a fractional psuedorange to define the GPS navigation solution.

REFERENCES:
patent: 4601005 (1986-07-01), Kilvington
patent: 4701934 (1987-10-01), Jasper
patent: 4785463 (1988-11-01), Janc et al.
patent: 4797677 (1989-01-01), McDoran et al.

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