Method and Apparatus for Processing of Satellite Signals Without Time of Day Information
First Claim
1. A method of locating position of a satellite signal receiver, comprising:
- obtaining pseudoranges that estimate the range of the satellite signal receiver to a plurality of satellites;
computing an absolute time and a position using the pseudoranges at a first time;
using the absolute time to compute another position at a subsequent time.
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Accused Products
Abstract
Method and apparatus for locating position of a satellite signal receiver is described. In one example, pseudoranges are obtained that estimate the range of a satellite signal receiver to a plurality of satellites. An absolute time and a position are computed using the pseudoranges at a first time. The absolute time is then used to compute another position at a subsequent time. In another example, a plurality of states associated with a satellite signal receiver are estimated, where the plurality of states includes a time tag error state. A dynamic model is then formed relating the plurality of states, the dynamic model operative to compute position of the satellite signal receiver.
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Citations
22 Claims
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1. A method of locating position of a satellite signal receiver, comprising:
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obtaining pseudoranges that estimate the range of the satellite signal receiver to a plurality of satellites;
computing an absolute time and a position using the pseudoranges at a first time;
using the absolute time to compute another position at a subsequent time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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estimating a plurality of states associated with a satellite signal receiver, the plurality of states including a time tag error state; and
forming a dynamic model relating the plurality of states, the dynamic model operative to compute position of the satellite signal receiver. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A system for computing position of a satellite signal receiver, comprising:
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a mobile device comprising a satellite signal receiver and a wireless transceiver;
a server being in wireless communication with the mobile device, where the satellite signal receiver provides pseudoranges that estimate the range of the satellite signal receiver to a plurality of satellites, and the wireless transceiver transmits the pseudoranges to the server, and where the server computes an absolute time and a position of the satellite signal receiver using the pseudoranges at a first time, and uses the absolute time to compute another position of the satellite signal receiver at a subsequent time.
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19. A system, comprising:
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a mobile device comprising a satellite signal receiver and a wireless transceiver;
a server being in wireless communication with the mobile device, where the satellite signal receiver provides pseudoranges that estimate the range of the satellite signal receiver to a plurality of satellites, and the wireless transceiver transmits the pseudoranges to the server, and where the server includes a sequential estimator having a plurality of states associated with a satellite signal receiver, the plurality of states including a time tag error state. - View Dependent Claims (20)
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21. A mobile device, comprising:
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a satellite signal receiver for providing pseudoranges that estimate the range of the mobile device to a plurality of satellites; and
a sequential estimator having a plurality of states associated with the satellite signal receiver, the plurality of states including a time tag error state. - View Dependent Claims (22)
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Specification