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公开(公告)号：US20210063538A1
公开(公告)日：2021-03-04
申请号：US17098233
申请日：2020-11-13
Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.
Inventor： Shaodong YANG
Abstract: A lidar, and an anti-interference method therefor, may modulate a transmitting time of the lidar by injecting random time jitter at a time interval in a sequence of the transmitting time, and cause the lidar to transmit a laser pulse according to a modulated transmitting time. When an echo received by the lidar includes an expected echo of the local lidar and an unexpected echo from other lidars, because the transmitting time and the expected receiving time of the echo are correlated, injecting random time jitter in the transmitting time of the lidar may disrupt the correlation between the transmitting time of the local lidar and the transmitting time of other lidars. Thus, when a plurality of lasers are used together in one scenario and cause crosstalk, the anti-interference method for the lidar above can be used to fight against crosstalk to some extent.
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公开(公告)号：US20220221711A1
公开(公告)日：2022-07-14
申请号：US17707931
申请日：2022-03-29
Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.
Inventor： Shaodong YANG , Jingyang ZHENG
Abstract: Embodiments of this application disclose a mirror control method and device and a LiDAR, pertaining to the field of LiDAR. The method includes: outputting a control signal configured to control a mirror to scan; detecting a feedback signal of the scanning mirror; determining an actual amplitude gain of the mirror based on the feedback signal, and determining an error of the actual amplitude gain relative to a preset amplitude gain threshold; and determining a frequency adjustment based on the error, adjusting frequency based on the frequency adjustment, and obtaining an output signal. In the embodiments of this application, stability of a scanning angle of the mirror can be maintained when resonance frequency of the mirror deviates.
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