Abstract: The disclosure discloses a laser radar and a laser radar-based detection method. The laser radar includes: a housing; a laser transmitter provided in the housing, configured to transmit laser light; an optical window provided at the housing, where the laser light transmitted from the laser transmitter leaves the housing through the optical window, and laser light reflected by a target object returns to the interior of the housing through the optical window; a laser receiver provided in the housing, configured to receive the laser light reflected by the target object; and an optical template, where a portion of the laser light transmitted from the laser transmitter is reflected by the optical template to the laser receiver. The laser radar according to the disclosure can ensure the reliability of the laser radar.

Abstract: The disclosure relates to the technical field of Lidars, and particularly provides a method and system for evaluating a point cloud quality of a Lidar, and an apparatus, which are intended to solve a problem that an existing method for evaluating a point cloud quality is greatly affected by other external objects, resulting in a low accuracy of evaluation results. To this end, the Lidar of the disclosure includes a laser transmitter, a laser detector, a target, and a housing, where the laser transmitter, the laser detector, and the target are all provided in the housing, and the target is configured to receive a laser beam transmitted by the laser transmitter and to reflect the laser beam to the laser detector.