Method and apparatus for code phase correlation
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United States of America Patent
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Issued Date -
Apr 15, 2004
app pub date -
Nov 30, 2000
filing date -
Dec 1, 1999
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of code phase correlation and apparatus (10 to 15) implementing the same is disclosed, the method comprising the steps of (a) receiving a subject signal comprising a target pseudorandom noise code; (b) generating early and late replica code signals corresponding to the target code; (c) correlating the subject signal with the early and late replica code signals and returning respective early and late correlation values; and (d) calculating a code phase discriminator for determining whether the target code has been acquired as a function of the sum of the early and late correlation values.
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