Systems and methods of monitoring the accuracy of a global positioning system receiver in a marine vessel
First Claim
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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Accused Products
Abstract
Systems and methods for monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel utilize a GPS receiver receiving a plurality of satellite signals, calculating a global position of the GPS receiver based on the plurality of signals, and determining a signal to noise ratio (SNR) of each signal in the plurality of signals; and a control circuit having a computer readable medium having executable code, and being connected to the GPS receiver by a communication link. The control circuit calculates an average SNR of the plurality of signals and compares the average SNR to a threshold SNR. In one example the threshold SNR varies depending upon a number of satellites sending the plurality of signals and a speed at which the marine vessel is traveling.
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Citations
30 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel, the method comprising:
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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 speed at which the marine vessel is traveling, wherein the threshold SNR varies depending upon speed at which the marine vessel is traveling. - View Dependent Claims (8, 9, 10)
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11. A method of monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel, the method comprising:
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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; and comparing with the control circuit the average SNR to a threshold SNR; wherein the threshold SNR varies depending upon a number of satellites sending the plurality of signals and a speed at which the marine vessel is traveling.
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12. A method of monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel, the method comprising:
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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; and comparing with the control circuit the average SNR to a threshold SNR; wherein the average SNR is a weighted average; wherein the average SNR is weighted based upon a location of each satellite sending the plurality of satellite signals. - View Dependent Claims (13)
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14. A method of monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel, the method comprising:
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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 calculating a horizontal dilution of precision (HDOP) and further comparing the calculated HDOP to a threshold HDOP; wherein the threshold HDOP varies based upon speed at which the marine vessel is traveling. - View Dependent Claims (15)
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16. A system for monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel, the system comprising:
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a GPS receiver receiving a plurality of satellite signals, calculating a global position of the GPS receiver based on the plurality of signals, and determining a signal to noise ratio (SNR) of each signal in the plurality of signals; and a control circuit having a computer readable medium having executable code, and being connected to the GPS receiver by a communication link; the control circuit calculating an average SNR of the plurality of signals and comparing the average SNR to a threshold SNR; wherein the GPS receiver identifies a number of satellites sending the plurality of satellite signals, and wherein the threshold SNR varies depending upon the number of satellites. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A system for monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel, the system comprising:
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a GPS receiver receiving a plurality of satellite signals, calculating a global position of the GPS receiver based on the plurality of signals, and determining a signal to noise ratio (SNR) of each signal in the plurality of signals; and a control circuit having a computer readable medium having executable code, and being connected to the GPS receiver by a communication link; the control circuit calculation an average SNR of the plurality of signals and comparing the average SNR to a threshold SNR; wherein the threshold SNR varies depending upon speed at which the marine vessel is traveling. - View Dependent Claims (24, 25, 26, 27)
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28. A system for monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel, the system comprising:
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a GPS receiver receiving a plurality of satellite signals, calculating a global position of the GPS receiver based on the plurality of signals, and determining a signal to noise ratio (SNR) of each signal in the plurality of signals; and a control circuit having a computer readable medium having executable code, and being connected to the GPS receiver by a communication link; the control circuit calculating an average SNR of the plurality of signals and comparing the average SNR to a threshold SNR; wherein the average SNR is a weighted average; and wherein the average SNR is weighted based upon a location of each satellite sending the plurality of satellite signals. - View Dependent Claims (29)
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30. A system for monitoring the accuracy of a global positioning system (GPS) receiver in a marine vessel, the system comprising:
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a GPS receiver receiving a plurality of satellite signals, calculating a global position of the GPS receiver based on the plurality of signals, and determining a signal to noise ratio (SNR) of each signal in the plurality of signals; and a control circuit having a computer readable medium having executable code, and being connected to the GPS receiver by a communication link; the control circuit calculating an average SNR of the plurality of signals and comparing the average SNR to a threshold SNR; wherein the GPS receiver calculates a horizontal dilution of precision (HDOP) and wherein the control circuit further monitors the accuracy of the calculated global position of the GPS receiver by comparing the calculated HDOP to a threshold HDOP; and wherein the threshold HDOP varies based upon speed at which the marine vessel is traveling.
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Specification