Method and apparatus for forming a dynamic model to locate position of a satellite receiver
DC CAFCFirst Claim
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1. A method, comprising:
- estimating a plurality of states associated with a satellite signal receiver, the plurality of states including a time tag error state, the time tag error state relating a local time associated with said satellite signal receiver and an absolute time associated with signals from a plurality of satellites; and
forming a dynamic model relating the plurality of states, the dynamic model operative to compute position of the satellite signal receiver.
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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
10 Claims
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1. 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, the time tag error state relating a local time associated with said satellite signal receiver and an absolute time associated with signals from a plurality of satellites; 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 (2, 3, 4, 5, 6, 7, 8)
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9. 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, the time tag error state relating a local time associated with said satellite signal receiver and an absolute time associate with signals from the plurality of satellites. - View Dependent Claims (10)
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Specification