Patent ID: 6775615
Filing Date: 2004-08-10
Classification: G01S

Abstract:
A method of obtaining a position fix in a GPS receiver comprising the steps of:(i) providing an estimate of clock offset between the GPS receiver and the GPS satellites; (ii) measuring a set of pseudoranges from the GPS receiver to GPS satellites; and (iii) either: (a) resolving the set of pseudoranges obtained in step (ii) to obtain a position fix, or (b) providing an estimate of the position of the GPS receiver, resolving the set of pseudoranges obtained in step (ii) to obtain a position fix correction, and obtaining a position fix using the estimate of the position of the GPS receiver and the position fix correction wherein resolving the pseudoranges in step (iii)(a) or step (iii)(b) does not involve resolving the pseudoranges for either a new clock offset or clock offset correction.