Method and apparatus for processing satellite signals at a satellite positioning system receiver
AssigneeBroadcom Corporation
InventorsCharles Abraham, Frank van Diggelen
Life of this patent
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Abstract
Method and apparatus for processing satellite signals in an SPS receiver is described. In one example, the satellite signals are correlated against pseudorandom reference codes to produce correlation results. A determination is made whether the SPS receiver is in a motion condition or a stationary condition. The correlation results are coherently integrated in accordance with a coherent integration period. The coherent integration period is a value that depends upon the motion condition of the SPS receiver.
Claims18
A method of processing satellite signals in a satellite positioning system (SPS) receiver, comprising:
- correlating the satellite signals against pseudorandom reference codes to produce correlation results;
- detecting whether the SPS receiver is in a motion condition or a stationary condition;
- and
- coherently integrating the correlation results in accordance with a coherent integration period, where a value of the coherent integration period depends on the movement of the SPS receiver.
Apparatus for processing satellite signals in a satellite positioning system (SPS) receiver, comprising:
- a correlator for correlating the satellite signals against pseudorandom reference codes to produce correlation results;
- a motion detection module for detecting whether the SPS receiver is in a motion condition or a stationary condition;
- integration circuits for coherently integrating the correlation results in accordance with a coherent integration period;
- and
- control logic for setting the coherent integration period to a value that depends on the movement of the SPS receiver.
Dependencies are inferred from the claim text.