Method and apparatus for performing signal correlation
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United States of America Patent
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May 1, 2012
Grant Date -
Jul 12, 2007
app pub date -
Mar 9, 2007
filing date -
May 18, 2001
priority date (Note) -
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Abstract
A method of computing a correlation between a pseudorandom reference code and a satellite signal is provided. The method comprises receiving a satellite signal having a repeating code modulated thereon, wherein the satellite signal comprises a pseudorange; correlating the satellite signal with less than an entire length of the pseudorandom reference code with a portion of the satellite signal to produce a correlation over a period less than a period of the repeating code; and processing the correlation to form values representative of magnitude or power of the correlation to produce an energy signal.
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