Patent ID: 8085191
Filing Date: 2011-12-27
Classification: G01S

Abstract:
1. A navigation satellite system (NSS) method for position determination based on signal processing of PRN codes, the method comprising: using a NSS high yield signal processing technique wherein a first high yield location solution is determined using a first set of PRN codes associated with a first NSS and a second high yield location solution is determined using a second set of PRN codes associated with a second NSS; using a NSS high accuracy technique for attempting a first high accuracy location solution based on signal processing of said first set of PRN codes and for attempting a second high accuracy location solution based on signal processing of said second set of PRN codes; selecting one of the first and second high accuracy location solutions as a NSS-based location when either or both of the first and second high accuracy location solutions is available, wherein when both the first and second high accuracy location solutions are available the first high accuracy location solution is selected when a first location difference between the first high accuracy and high yield location solutions is smaller than a second location difference between the second high accuracy and high yield location solutions, and the second high accuracy location solution is selected when the second location difference is smaller than the first location difference; and selecting one of the first and second high yield location solutions for the NSS-based location when no high accuracy location solution is available and one or both of the high yield solutions is available.