Patent ID: 7450051

Claim:
A method of operating a radar detector to suppress nuisance radar alerts due to signals received in a radar band which are not radar signals of interest, said method comprising: scanning at least a radar band of interest; detecting a first signal in said radar band of interest; deciding whether said first signal is a nuisance signal that should be suppressed by determining if a second signal is detected that is a companion of said first signal, said first and second signals being companion signals if a pattern associates said first signal as being derived from a first nuisance local oscillator frequency leaked from another radar detector while said other radar detector is sweeping a first frequency range and said pattern associates said second signal as being derived from a second nuisance local oscillator frequency leaked from said other radar detector while said other radar detector is sweeping a second frequency range different from said first frequency range, wherein said frequency of said second signal is different from and not harmonically related to said frequency of said first signal; and suppressing an alert for said first signal if said first signal is determined to be a nuisance signal.