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

Claim 10:
11. A frequency-modulated continuous-wave lidar system comprising at least one transceiver configured to:
during an initial frame of two consecutive frames:
transmit a first transmit signal for an initial pixel of two consecutive pixels having a first waveform that comprises a first frequency modulation, a first amplitude modulation, or a combination thereof;
receive a first return signal comprising a version of the first transmit signal that is reflected by an object; and
generate a first beat signal by mixing the first return signal with the first transmit signal;

during a subsequent frame of the two consecutive frames:
transmit a second transmit signal for the same initial pixel having a second waveform that comprises a second frequency modulation, a second amplitude modulation, or a combination thereof, at least one of the second frequency modulation and the second amplitude modulation having a different modulation than the first frequency modulation and the first amplitude modulation, respectively;
receive a second return signal comprising a version of the second transmit signal that is reflected by the object; and
generate a second beat signal by mixing the second return signal with the second transmit signal, at least one of a center peak or a sideband peak of the second beat signal having a different frequency than a center peak or a sideband peak of the first beat signal, respectively; and

compare the second beat signal to the first beat signal to increase a confidence in detecting the object or in determining a characteristic of the object.