Patent ID: 11971508
Assignee: APTIV TECHNOLOGIES AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. The method of claim 3 further comprising:
receiving, during a detection window for the initial frame in which at least a portion of the first transmit signal and the third transmit signal are transmitted, the first return signal and the third return signal forming a first composite return signal;
generating a first comparison result by comparing in a frequency domain the first composite return signal to a first template signal having the first amplitude modulation;
generating a third comparison result by comparing in the frequency domain the first composite return signal to a third template signal having the third amplitude modulation;
determining, based on the first comparison result and the third comparison result, a first respective pixel of the two consecutive pixels that corresponds to the first return signal and a third respective pixel of the two consecutive pixels that corresponds to the third return signal;
receiving, during a detection window for the subsequent frame in which at least a portion of the second transmit signal and the fourth transmit signal are transmitted, the second return signal and the fourth return signal, the second return signal and the fourth return signal forming a second composite return signal;
generating a second comparison result by comparing in the frequency domain the second composite return signal to a second template signal having the second amplitude modulation;
generating a fourth comparison result by comparing in the frequency domain the second composite return signal to a fourth template signal having the fourth amplitude modulation; and
determining, based on the second comparison result and the fourth comparison result, a second respective pixel of the two consecutive pixels that corresponds to the second return signal and a fourth respective pixel of the two consecutive pixels that corresponds to the fourth return signal,
wherein the comparing in the frequency domain includes a cross-correlation, a convolution, or a match-filtering process.