RADAR FALSE ALERT REDUCTION

摘要

A radar detector suppresses alerts from vehicle guidance systems, by sweeping for a consistent radar signal; the center frequency of the signal is stored and the detector suppresses warnings of radar signals near that frequency. The detector uses an enhanced method for suppression of signals near a known location of a false signal source; in the event the detector detects a radar signal and finds a matching stored false signal, the detector will first compare the strength of the received signal to a threshold strength that is computed based upon the distance of the detector from the stored false signal, and will only suppress signals below threshold. The detector includes a camera directed to the road in the vicinity of the vehicle. Image data from the camera is processed to identify police vehicles as identified by flashing lights, a profile including a rooftop light bar and/or highly contrasting colored panels.

主权项

1. A radar detector adapted to identify and suppress alerts of locally generated radar signals from vehicle guidance systems, the radar detector comprising:
a radar receiver for detecting radar signals; and signal processing electronics for controlling the radar receiver and evaluating detected radar signals, the signal processing electronics comprising a processor programmed via software to:
perform a lockout sequence during operation of the radar detector, the lockout sequence comprising scanning a radar band for a vehicle guidance radar signal that is consistently received and otherwise consistent with vehicle guidance systems signal emissions from the vehicle carrying the radar detector;identify a frequency of a vehicle guidance signal emission identified in the preceding step, and storing the frequency; and thereaftersuppress warnings of radar signals at frequencies within a range including the stored frequency.