Patent ID: 7705772

Claim:
In a traffic radar, a method of tracking and validating a target from Doppler return information comprising: (a) receiving Doppler return information containing at least one return signal derived from a moving target, and presenting said information as digital data, (b) transforming said data into the frequency domain to provide a spectrum that includes frequency components corresponding to Doppler return signals contained in said information, (c) storing said frequency components in memory, (d) identifying a peak magnitude of each component that exceeds a predetermined threshold to thereby identify current target peaks, (e) comparing said current target peaks with previously found target peaks and accumulating their magnitudes to provide a target history for each of said components, (f) from said target histories, identifying a target which has the strongest Doppler return signal, and determining the speed thereof, (g) from said target histories, identifying a target that has the highest frequency return signal, and determining the speed thereof, and (h) displaying either or both of the determined speeds.