Patent ID: 6353578
Filing Date: 2002-03-05
Classification: G01S

Abstract:
A method for determining whether a signal is noise or is a signal to be tracked, comprising the steps of:receiving three consecutive samples of said signal, each sample having a phase angle; comparing said three consecutive phase angles, said comparing including defining excess phase rotation (EPR) as: EPR=&PHgr;i=&THgr;iâˆ’2&THgr;i-1=&THgr;i-2, where&THgr;i i is the phase angle of said third sample, &THgr;i-1 is the phase angle of said second sample, and &THgr;i-2 is the phase angle of said first sample; and using the compared phase angle values to determine whether a signal is noise or is a signal to be tracked.