Method of GPS bit synchronization
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United States of America Patent
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Issued Date -
Jan 17, 2008
app pub date -
Jul 12, 2006
filing date -
Jul 12, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of GPS bit synchronization is disclosed. The method includes the steps of a) receiving plural serial C/A Codes, wherein a data bit is formed by m C/A Codes; b) sequentially providing a bin number ranged from 0 to m-1 to the plural C/A Codes; c) setting a sampling value k; d) sequentially determining adjacent two C/A Codes, C/A Code nk and C/A Code (n+1)k, wherein n={0, 1, 2, 3, . . . }, and calculating a sign change aggregate value of each bin number ranged from 0 to m-1; e) repeating step d) till there are k bin numbers having the sign change aggregate value equal to or greater than a first threshold, and summing the k bin numbers for obtaining a lookup value; and f) acquiring a bit boundary of the data bit according to the lookup value in the plural serial C/A Codes.
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