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Systems and methods of monitoring the accuracy of a global positioning system receiver in a marine vessel

  • US 8,694,248 B1
  • Filed: 02/08/2011
  • Issued: 04/08/2014
  • Est. Priority Date: 02/08/2011
  • Status: Active Grant
First Claim
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1. A method of monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel, the method comprising:

  • receiving a plurality of satellite signals;

    calculating a global position of the GPS receiver based on the plurality of satellite signals;

    determining a signal to noise ratio (SNR) of each of the plurality of satellite signals;

    providing a control circuit having a computer readable medium having executable code;

    calculating with the control circuit an average SNR of the plurality of satellite signals;

    comparing with the control circuit the average SNR to a threshold SNR; and

    identifying a number of satellites sending the plurality of satellite signals, wherein the threshold SNR varies depending upon the number of satellites.

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