Method and apparatus for performing signal correlation using historical correlation data
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United States of America Patent
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Nov 16, 2004
Grant Date -
Nov 21, 2002
app pub date -
Sep 26, 2001
filing date -
May 18, 2001
priority date (Note) -
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Abstract
A method and apparatus for computing a convolution between an input GPS signal and a reference code by generating the convolution result in real time without storing unprocessed signal samples. The apparatus comprises a vector multiplier running at high speed to achieve the same result as a vector multiplier sized to process an entire epoch. Additionally, historical correlation data is used to correct frequency and timing errors.
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