Pseudo-random-number code detection and tracking system

Details Pseudo-random-number code detection and tracking system Pseudo-random-number code detection and tracking system

1978-08-08

1980-05-13

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

329178, 375 76, 375 94, 375115, H04K 104, H04L 2510, H04L 2706

Patent

active

042030706

ABSTRACT:
A pseudo-random-number code detection and tracking system using a closed loop system wherein a detector having a non-linear response characteristic is responsive to a coded received signal and to a locally generated coded signal to produce an error signal. The error is used to control the characteristics of the local signal so as to cause the signals to become aligned. Means are further provided to dynamically control the non-linear response characteristics of the detector so that the coded received signal and coded local signal remain aligned over a controllable range of error signal levels. Thus, a relatively large range can be used during an acquisition operation and a relatively narrower range during the tracking operation.

REFERENCES:
patent: 3402265 (1968-09-01), Couvillon, Jr.
patent: 4039749 (1977-08-01), Gordy et al.

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