Method and Apparatus for Monitoring Satellite-Constellation Configuration To Maintain Integrity of Long-Term-Orbit Information In A Remote Receiver
First Claim
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1. A method, comprising:
- obtaining broadcast ephemeris transmitted from at least one satellite of a constellation of satellites;
comparing the broadcast ephemeris to long-term-orbit information available to a global-navigation-satellite receiver; and
causing the global-navigation-satellite receiver to not use the long-term-orbit information when the long-term-orbit information differs from the broadcast ephemeris.
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Abstract
A method and apparatus for monitoring a configuration of satellites to maintain integrity of LTO information in a GNSS receiver of a GNSS or other positioning system is described. The method may include obtaining broadcast ephemeris transmitted from at least one satellite of a constellation of satellites; comparing the broadcast ephemeris to long-term-orbit information available to a global-navigation-satellite receiver; and causing the global-navigation-satellite receiver to not use the long-term-orbit information when the long-term-orbit information does not correspond to the broadcast ephemeris.
104 Citations
17 Claims
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1. A method, comprising:
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obtaining broadcast ephemeris transmitted from at least one satellite of a constellation of satellites; comparing the broadcast ephemeris to long-term-orbit information available to a global-navigation-satellite receiver; and causing the global-navigation-satellite receiver to not use the long-term-orbit information when the long-term-orbit information differs from the broadcast ephemeris. - View Dependent Claims (2, 3, 4)
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5. A method, comprising:
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obtaining broadcast ephemeris transmitted from at least one satellite of a constellation of satellites; comparing the broadcast ephemeris to long-term-orbit information available to a global-navigation-satellite receiver; and causing the global-navigation-satellite receiver to use of the broadcast ephemeris as a substitute for the long-term-orbit information when the long-term-orbit information differs substantially from the broadcast ephemeris. - View Dependent Claims (6, 7)
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8. A global-navigation-satellite receiver comprising:
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a receiver adapted to obtain broadcast ephemeris transmitted from at least one satellite of a constellation of satellites; memory adapted to store the broadcast ephemeris and executable instructions to; compare the broadcast ephemeris to long-term-orbit information available to a global-navigation-satellite receiver; and cause the global-navigation-satellite receiver to not use the long-term-orbit information when the long-term-orbit information differs from the broadcast ephemeris; and a processor adapted to obtain the executable instruction from memory, and to execute the executable instructions. - View Dependent Claims (9, 10, 11, 12)
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13. A server comprising:
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a receiver adapted to obtain broadcast ephemeris transmitted from at least one satellite of a constellation of satellites; memory adapted to store the broadcast ephemeris and executable instructions to; compare the broadcast ephemeris to long-term-orbit information available to a global-navigation-satellite receiver; and cause the global-navigation-satellite receiver to not use the long-term-orbit information when the long-term-orbit information differs from the broadcast ephemeris; and a processor adapted to obtain the executable instruction from memory, and to execute the executable instructions. - View Dependent Claims (14, 15, 16, 17)
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Specification