Patent ID: 8170082
Filing Date: 2012-05-01
Classification: G01S,H04B,H04J

Abstract:
1. A method comprising: receiving a first global navigation satellite system signal associated with a first satellite, the first global navigation satellite system signal having modulated thereon a first Chip sequence associated with a first direct-sequence spreading code and a second Chip sequence associated with a second direct-sequence spreading code, the first spreading code having a first code time period and the second spreading code having a second code time period, the first code time period being longer than the second code time period; receiving a second global navigation satellite system signal associated with a second satellite, the second global navigation satellite system signal having modulated thereon a third Chip sequence associated with the first spreading code and a fourth Chip sequence associated with the second spreading code; selecting a starting time for integration of the first global navigation satellite system signal dependent on a characteristic of the first Chip sequence relative to the third Chip sequence; integrating the first global navigation satellite system signal based on the selected starting time; and code phase synchronizing to the first global navigation satellite system signal based on the integrating of the first global navigation satellite system signal.