Method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver
First Claim
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1. A method, comprising:
- receiving a first set of satellite tracking data at a server;
generating integrity data for a second set of satellite tracking data stored in at least one remote receiver using said first set of satellite tracking data; and
transmitting said integrity data to said at least one remote receiver.
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Abstract
A method and apparatus for monitoring the integrity of satellite tracking data used by a remote receiver is described. In one example, a first set of satellite tracking data is received at a server. Integrity data for a second set of satellite tracking data is generated using the first set of satellite tracking data. The integrity data is then transmitted to at least one remote receiver having the second set of satellite tracking data.
57 Citations
27 Claims
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1. A method, comprising:
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receiving a first set of satellite tracking data at a server; generating integrity data for a second set of satellite tracking data stored in at least one remote receiver using said first set of satellite tracking data; and transmitting said integrity data to said at least one remote receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method, comprising:
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measuring pseudoranges from a remote receiver to a plurality of satellites in a constellation; computing a position of said remote receiver using said pseudoranges and satellite tracking data stored within said remote receiver; estimating whether said position is valid; and requesting integrity data for said satellite tracking data from a server in response to an invalid position. - View Dependent Claims (19, 20, 21)
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22. A satellite positioning system receiver, comprising:
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a satellite signal receiver for measuring pseudoranges from said satellite positioning system receiver to a plurality of satellites in a constellation; a memory for storing satellite tracking data; a processor for computing a position of said satellite positioning system receiver using said pseudoranges and said satellite tracking data and estimating whether said position is valid; and a wireless transceiver for transmitting a request for integrity data associated with said satellite tracking data to a server in response to an invalid position.
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23. A method, comprising:
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receiving outage notification data generated by a satellite control station; parsing said outage notification data to identify unhealthy satellites and corresponding periods of outage for said unhealthy satellites; generating integrity data for a set of satellite tracking data in response to said identified unhealthy satellites and said periods of outage; and transmitting said integrity data to at least one remote receiver having said set of satellite tracking data. - View Dependent Claims (24, 25, 26, 27)
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Specification