Patent ID: 6466161
Filing Date: 2002-10-15
Classification: G01S,H04B

Abstract:
A location services system, comprising:a Global Positioning System (GPS) receiver, comprising: a first data path for correlating an incoming GPS signal, located within a scanned signal window, with a locally generated signal; a second data path for verifying the incoming GPS signal, located within the scanned signal window, against a lock signal, the second data path determining whether the incoming GPS signal has at least one characteristic which differentiates the incoming GPS signal from an auto-correlated signal and a cross-correlated signal; a data path executive for monitoring the first data path and, when the incoming GPS signal does not contain the at least one characteristic, for continuing to search the scanned signal window for a second incoming GPS signal; and means for informing a user of the location services system the position of the GPS receiver.