Abstract: A method for processing a point cloud generated by a light detection and ranging system, includes: receiving a first measurement generated by the light detection and ranging system; retrieving a plurality of second measurements that are adjacent to the first measurement; calculating a first parameter by using distances of the first measurement and the plurality of the second measurements, the first parameter indicating a degree of continuum of the first measurement relative to the plurality of the second measurements; and determining whether the first measurement represents a measurement of noises by using the first parameter.

Abstract: This disclosure provides a diagnostic method for a position and orientation of a LiDAR, where the LiDAR is fixed to an apparatus, the diagnostic method including: determining a first reference data of scanning a calibration object by the LiDAR when it is in a standard position and orientation; controlling the LiDAR to scan the calibration object in a current position and orientation and collect a first measurement data of the LiDAR; and determining, based on the first reference data and the first measurement data, whether the current position and orientation of the LiDAR deviates from the standard position and orientation. In embodiments of this disclosure, using the characteristics of point cloud data of the LiDAR, the LiDAR diagnoses by itself an abnormal change in its relative position and orientation to the apparatus during the normal operation without the cooperation of other detector devices. Calculations of the diagnostic method are simple, and results are accurate.

Abstract: A calibration method, a calibration device (M10), a calibration system, and a readable storage medium. the calibration method comprises: receiving a point cloud determined by a LiDAR (LS1) from a field of view, the point cloud being in a LiDAR coordinate system (S11); receiving a set of survey points determined from the field of view by a survey device (CH1), the set of survey points being in a survey coordinate system (S12); based on the point cloud and the set of survey points, determining a first transformation parameter between the LiDAR coordinate system and the survey coordinate system (S13); based on the first transformation parameter and the position and orientation information of the vehicle (CA1) in the survey coordinate system (S14), determining a calibration parameter (S14) between the LiDAR coordinate system and the vehicle coordinate system of the vehicle (CA1). Both the calibration efficiency and the calibration precision can be improved, and batch calibration is facilitated.

Abstract: A Lidar system may comprise a rotor and a stator. The rotor is configured to rotate with respect to the stator. The rotor comprises at least one supporting body and a plurality of light sources disposed on the at least one supporting body, the plurality of light sources configured to emit a plurality of first light beams. The plurality of light beams are non-uniformly distributed along a vertical direction in a vertical field of view of the Lidar system.

Abstract: A multiline LiDAR includes a rotor, a stator, a plurality of lasers, a light collimator arranged in the rotor, and one or more carriers arranged in the rotor. The plurality of lasers are arranged on the one or more carriers in n rows, n?2, and lasers in different rows are staggered from each other. The multiline LiDAR is configured such that, when detection light emitted by each laser is reflected by objects, reflected light is converged on a detector after passing through an optical receiver, and detection beams emitted by the plurality of lasers are configured to be driven by the rotor to scan around a central axis to generate a scanning point cloud having a sparse-dense distribution in a vertical direction to obtain information about objects in a central field of view. A number of lines of the multiline LiDAR is equal to or greater than 16.

Abstract: A scanner and a method for controlling the scanner for a Lidar system are provided. The method comprises: producing a trigger signal by a positional sensor of the scanner; generating a single drive signal comprising a first component at a first frequency and a second component at a second frequency, the first component and the second component are superposed with a fixed phase relationship with aid of the trigger signal; transmitting the single drive signal to the scanner, and the scanner has resonant responses at the first frequency; and actuating the scanner to move in a first periodic motion at the first frequency about a first axis, and move in a second periodic motion at the second frequency about a second axis.

Abstract: A method for processing a point cloud generated by a light detection and ranging system, includes: receiving a first measurement generated by the light detection and ranging system; retrieving a plurality of second measurements that are adjacent to the first measurement; calculating a first parameter by using distances of the first measurement and the plurality of the second measurements, the first parameter indicating a degree of continuum of the first measurement relative to the plurality of the second measurements; and determining whether the first measurement represents a measurement of noises by using the first parameter.

Abstract: A device and method for measuring an angle of a scanner, and a LiDAR. The device for measuring the angle includes a conductor (11) and an angle measuring circuit (12), wherein the scanner comprises a scanning mirror (10); one side of the scanning mirror (10) includes a reflective surface and the other side thereof includes a mounting surface, and the scanning mirror can pivot around at least one axis; the conductor (11) can be fixed on the mounting surface; the angle measuring circuit (12) includes a resonant system (120) and a sampling unit (121); the resonant system (120) includes an inductor (1201) and a capacitor (1202), the inductor (1201) can be fixedly arranged at a predetermined distance from a stationary position of the conductor (11); and the sampling unit (121) can sample and output an electric signal of the resonant system (120), and can determine a parameter of the resonant system (120) so as to determine a tilt angle of the scanning mirror (10).

Abstract: A Lidar system and method is provided for adaptive control. The Lidar system comprises: an array of emitters each of which is individually addressable and controlled to emit a multi-pulse sequence, at least a subset of the emitters are activated to emit multi-pulse sequences concurrently according to an emission pattern; an array of photosensors each of which is individually addressable, at least a subset of the photosensors are enabled to receive light pulses according to a sensing pattern, each of the subset of photosensors is configured to detect returned light pulses returned and generate an output signal indicative of an amount of optical energy associated with at least a subset of the light pulses; and one or more processors electrically coupled to the array of emitters and the array of photosensors and configured to generate the emission pattern and the sensing pattern based on one or more real-time conditions.

Abstract: A Lidar system may comprise a rotor and a stator. The rotor is configured to rotate with respect to the stator. The rotor comprises at least one supporting body and a plurality of light sources disposed on the at least one supporting body, the plurality of light sources configured to emit a plurality of first light beams. The plurality of light beams are non-uniformly distributed along a vertical direction in a vertical field of view of the Lidar system.

Abstract: An apparatus for mounting a plurality of light sources of a Lidar is provided. The apparatus comprises: a plurality of mounting units held by a base structure and a fixation component that is disposed away from the base structure along a longitudinal direction of a mounting unit, the base structure and the fixation component configured to allow an adjustment of the plurality of mounting units along a horizontal direction. The plurality of the mounting units includes structures that accept the plurality of the light sources and control directions of light beams emitted by the plurality of light sources along a vertical direction.

Abstract: A storage method for detection data of a lidar, a data processing method for a lidar, a lidar, and a computer-readable storage medium are provided. The storage method includes: S101: receiving a detection data, the detection data including time information and intensity information corresponding to the time information; and S102: storing the intensity information with a first time precision based on a weight of the time information. The first time precision is a time interval between any two adjacent first time scales, and is n times the time resolution of the detection data of the lidar, and n>1. The weight is associated with a time interval between the time information and at least one first time scale. The storage method can maintain a ranging precision while reducing a storage space.

Abstract: A laser gas detection system includes a laser gas detector and a near-eye display device. The laser gas detection system provided in the present disclosure incorporates modern display technologies and modern communication facilities to present detection results to a user of the laser gas detection system in various intuitive and highly readable forms. The laser gas detection system is further capable of projecting the detection results to a field of view of the user through the near-eye display device.

Abstract: A laser gas detection system includes a laser gas detector and a near-eye display device. The laser gas detection system provided in the present disclosure incorporates modern display technologies and modern communication facilities to present detection results to a user of the laser gas detection system in various intuitive and highly readable forms. The laser gas detection system is further capable of projecting the detection results to a field of view of the user through the near-eye display device.

Abstract: A laser device, a light source module and a laser radar. The laser device comprises: a light-emitting lamination, comprising a first reflector (105), an active region (104) and a second reflector (102), which are sequentially arranged in a light emergence direction, wherein the light-emitting lamination comprises one or more light-emitting units (200), and each of the light-emitting units (200) comprises a plurality of regularly arranged light-emitting points (203); and electrode units (107) located on the side of the first reflector (105) that is away from the active region (104), wherein each of the electrode units (107) corresponds to one light-emitting unit (200) and is used for loading a driving signal to the light-emitting unit (200). The laser device can improve the uniformity of luminous intensity.