Apparatus for and method of synchronous rejection
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United States of America Patent
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Jan 17, 2006
Grant Date -
Dec 16, 2004
app pub date -
Jun 16, 2004
filing date -
Jun 16, 2003
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Abstract
Methods of improving a signal to noise ratio using synchronous rejection are enclosed. Also disclosed are various synchronous rejection systems. In one method of synchronous rejection, the method includes correlating a phase of a reference signal to a phase of the interference signal; collecting a first data set during a first period of time using the reference signal; inverting the reference signal and re-correlating the phase of the reference signal to the phase of the interference signal; collecting a second data set during a second period of time using the inverted reference signal; and integrating the first and the second data set.
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