Pseudo-random-number-code-detection and tracking system
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United States of America Patent
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May 13, 1980
Grant Date -
N/A
app pub date -
Aug 8, 1978
filing date -
Aug 8, 1978
priority date (Note) -
Expired
status (Latency Note)
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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.
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