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Satellite navigation receiver with fixed point sigma RHO filter

  • US 10,048,385 B2
  • Filed: 10/12/2015
  • Issued: 08/14/2018
  • Est. Priority Date: 10/12/2015
  • Status: Active Grant
First Claim
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1. A satellite navigation receiver comprising:

  • a receiver front end for down-converting a composite received signal comprising a plurality of carrier signals;

    an analog-to-digital converter for converting the down-converted composite received signal to a digital composite received signal;

    a plurality of signal generators each for generating a local reference carrier signal and a local reference ranging code based on carrier corrective control data and code corrective control data based on feedback from an aggregate predictive filter, wherein the local reference carrier signal and the local reference ranging code are associated with one of the plurality of carrier signals;

    a plurality of receiver modules each comprising a correlator for determining one of a plurality of correlations of the digital composite received signal to the local reference carrier signal and the local reference ranging code, wherein each of the plurality of correlations comprises an in-phase correlation and a quadrature correlation and is associated with one of the plurality of carrier signals; and

    the aggregate predictive filter in communication with the plurality of signal generators, the aggregate predictive filter for estimating the carrier corrective control data and the code corrective control data based on the plurality of correlations.

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