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Unbiased code phase discriminator

  • US 8,000,381 B2
  • Filed: 02/26/2008
  • Issued: 08/16/2011
  • Est. Priority Date: 02/27/2007
  • Status: Active Grant
First Claim
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1. A method of determining the phase of a code signal where the code C consists of a known sequence of positive and negative symbols of average width T, where T>

  • 0, which method comprises the following steps;

    generating a first correlation kernel, by using a correlator system, that corresponds to non-transitions of the code signal and has a first correlation kernel shape;

    generating a second correlation kernel, using the correlator system, that corresponds to transitions of the code signal and has a second correlation kernel shape independent of the shape of the first correlation kernel; and

    producing a correlative phase discriminator by multiplying at least one of the said correlations by at least one scale factor, and adding together the first and second correlation kernels after at least one is multiplied by the said scale factor.

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