Patent ID: 6130908
Filing Date: 2000-10-10
Classification: G01S,H04B

Abstract:
An apparatus for analyzing a composite signal, wherein said composite signal includes a direct signal transmitted from at least one satellite and an incoming code multipath distortion component; said apparatus comprising:a satellite code channel tracking circuit configured to receive said composite signal; wherein said satellite code channel tracking circuit is configured to generate a satellite code tracking function having a tracking code multipath distortion component; wherein said satellite code channel tracking circuit further comprises:at least two partial code tracking circuits, wherein each said partial tracking circuit is used to minimize said tracking code multipath distortion component; wherein said minimized tracking code multipath distortion component comprises a residual tracking code multipath distortion component; andat least one additional estimation tracking circuit; wherein each said additional estimation circuit is used to estimate and further minimize said residual tracking code multipath distortion component; andan analyzing circuit connected to said satellite code channel tracking circuit; and wherein said analyzing circuit is configured to analyze said residual tracking code multipath distortion component.