Patent ID: 7221312
Filing Date: 2007-05-22
Classification: G01S,H04B

Abstract:
1. A method for detecting interference in a Global Positioning System, the method comprising the steps of: receiving at least one satellite signal from one or more satellites in a Global Positioning System; measuring a noise floor value in a frequency band of the at least one satellite signal; identifying an interference signal based on the noise floor value wherein the interference signal is determined by a comparison between the noise floor value from the at least one satellite signal and a predetermined acceptable range; determining an interference value for the interference signal from the noise floor value wherein a level of the noise floor value corresponds to a level of interference; wherein the comparison between the noise floor value and the predetermined acceptable range determines a corresponding interference value for the interference signal; wherein if the noise floor value is within the predetermined acceptable range, the interference value is set at a predetermined low interference value; wherein if the noise floor value is outside the predetermined acceptable range, the noise floor value is set at a predetermined high interference value; and providing the interference value to at least one user for informing the user of the interference signal.