Patent ID: 7764224
Filing Date: 2010-07-27
Classification: G01S

Abstract:
1. A spoofer tracking system for a receiver comprising: a primary channel in a receiver comprising means for tracking an original signal; a utility channel in the receiver comprising means for tracking a spoofer signal, said utility channel coupled to the primary channel; wherein the spoofer tracking system tracks both the original signal and the spoofer signal, said primary channel tracking means comprises a primary channel correlator receiving said original signal; a primary channel tracking loop receiving output from said correlator for tracking said original signal, said tracking loop responding to tracking commands, said correlator operatively connected to receive signals from said primary channel tracking loop; and, said utility channel tracking means comprises a spoofer tracking block for tracking said spoofer signal, said utility channel receiving output from said primary channel tracking loop, and said spoofer tracking block responding to the same said tracking commands as said primary channel tracking loop; and a utility channel correlator receiving said spoofer signal; wherein said original and spoofer signals are navigation signals.