Frequency error tracking in satellite positioning system receivers
First Claim
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1. A method in a satellite positioning system (SPS) receiver, the method comprising:
- acquiring a plurality of at least two SPS signals;
estimating frequency error for each of the plurality of SPS signals;
compensating for the frequency error of each of the plurality of SPS signals based on the estimated frequency errors for all of the plurality of SPS signals.
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Abstract
A method in a satellite positioning system (SPS) receiver 100 including acquiring a plurality of at least two SPS signals, estimating frequency error for each of the plurality of SPS signals, and compensating for the frequency error of each of the plurality of SPS signal based on the estimated frequency errors for all of the plurality of SPS signals.
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Citations
17 Claims
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1. A method in a satellite positioning system (SPS) receiver, the method comprising:
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acquiring a plurality of at least two SPS signals;
estimating frequency error for each of the plurality of SPS signals;
compensating for the frequency error of each of the plurality of SPS signals based on the estimated frequency errors for all of the plurality of SPS signals. - View Dependent Claims (2, 3, 4, 5)
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6. A method in a satellite positioning system (SPS) receiver, the method comprising:
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acquiring a plurality of at least two SPS signals;
estimating frequency error for each of the plurality of SPS signals;
compensating for any frequency error of each of the plurality of SPS signals based on a reference frequency error of the SPS receiver, the reference frequency error of the SPS receiver based on the estimated frequency errors of the plurality of SPS signals. - View Dependent Claims (7, 8, 9)
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10. A method in a satellite positioning system (SPS) receiver, the method comprising:
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estimating frequency error for a plurality of at least two SPS signals at a first rate;
generating frequency tracking information for each of the plurality SPS signals at a second rate;
compensating for the estimated frequency error of each of the plurality of SPS signals based on the frequency tracking information generated at the second rate. - View Dependent Claims (11, 12)
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13. A method in a satellite positioning system (SPS) receiver, the method comprising:
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detecting a change in a condition monitored by the SPS receiver;
generating frequency tracking information for a plurality of SPS signals based on the detected change in the condition monitored;
tracking frequency for the plurality of SPS signals based on frequency tracking information generated for the plurality of SPS signals. - View Dependent Claims (14, 15, 16, 17)
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Specification