Code tracking signal processing system

Details Code tracking signal processing system Code tracking signal processing system

1976-06-01

1978-05-30

Safourek, Benedict V.

H04L 704

Patent

active

040926010

ABSTRACT:
A code tracking signal processing system for tracking a coded signal of the pseudo-random-noise, or PRN, type wherein a time shift comparison is made of the input coded signal and a pair of time estimated coded feedback signals which represent an estimate of the coded input signal which has been advanced and delayed, respectively, by the same specified time shift. An effective error signal is formed from the time shift comparison signals and supplied to a digital integration means, such as an up-down counter, to generate a pair of control signals. The control signals control the pulse rate of a pulsed clock signal in accordance with the time shift error between the estimated code signal and the input code signal. The controlled pulse rate signal is then used to generate the advanced and delayed feedback signals and to produce a coded signal which is in effect locked into time synchronism with the input coded signal.

REFERENCES:
patent: 3305636 (1967-02-01), Webb
patent: 3626298 (1971-12-01), Paine
patent: 3665472 (1972-05-01), Kartchner et al.
patent: 3741655 (1973-06-01), Ling et al.
patent: 3938052 (1976-02-01), Glasson et al.

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