Patent ID: 8184676
Filing Date: 2012-05-22
Classification: G01S

Abstract:
1. A method for detecting and mitigating continuous wave (CW) interference in the correlation domain, the method comprising: receiving a radio frequency (RF) positioning signal at a GPS receiver; converting the RF positioning signal to a baseband signal; correlating the baseband signal with a plurality of codes to produce punctual correlation values and offset correlation values; coherently integrating the punctual correlation values; coherently integrating the offset correlation values; determining an ambient noise level; setting a threshold value to the determined ambient noise level; non-coherently integrating the coherently integrated punctual correlation values; non-coherently integrating the coherently integrated offset correlation values; detecting the CW interference based on the non-coherent integration values and the threshold; and subtracting the detected CW interference from the coherent integration values.