Abstract: This application discloses an anode addressing drive circuit, an addressable drive circuit, and a laser emission circuit.

Abstract: This disclosure provides a method for nonlinearly calibrating linear frequency modulation of an optical signal, an apparatus for nonlinearly calibrating linear frequency modulation of an optical signal, a computer-readable storage medium, and an electronic device. The method includes: in an ith frequency modulation cycle, obtaining a relationship between a modulation voltage signal Vi(t) input into a light source and an actual frequency signal fi(t) of an optical signal output by the light source, to obtain an actual association relationship fi(V) corresponding to the ith frequency modulation cycle, where i is a positive integer; based on a target frequency modulation signal fg(t) and the actual association relationship fi(V), determining a modulation voltage signal Vj(t) corresponding to a jth frequency modulation cycle, where j is i+1; and inputting a modulation voltage signal Vj(t) into the light source, to implement frequency modulation of the optical signal in the jth frequency modulation cycle.

Abstract: A waveguide assembly, an integrated chip, and a LiDAR are provided. The waveguide assembly includes a plurality of single-mode waveguides arranged with intervals. The effective refractive index of at least one single-mode waveguide is not equal to that of another adjacent single-mode waveguide.

Abstract: The present disclosure provides a laser emitting module and a LiDAR apparatus. The laser emitting module includes at least two groups of laser emitting circuits. Each group of the laser emitting circuits includes one charging energy storage circuit and at least one energy releasing circuit. The energy releasing circuit includes an energy releasing switch and at least one laser. The energy releasing switch is turned on to drive at least one laser to work correspondingly. The charging energy storage circuit and the energy releasing circuit are arranged one-to-one or one-to-multiple. Any two adjacent emissions correspond to different groups of the laser emitting circuits.

Abstract: The present application discloses an optical receiving device and an optical sensing device. The optical receiving device includes a lens assembly, a reflecting member, and a photosensitive member. The lens assembly includes at least one lens. The reflecting member is located on a transmission path of light passing through the lens assembly. The reflecting member has a reflecting surface. The reflecting surface is configured to reflect the light passing through the lens assembly. The photosensitive member has a photosensitive surface. The photosensitive surface is configured to receive light reflected by the reflecting surface. After passing through the lens assembly, a detecting echo light beam reflected back from a target object is reflected by the reflecting surface of the reflecting member, so that the light is transmitted to the photosensitive surface of the photosensitive member intensively.

Abstract: The present application discloses a laser receiving circuit and a LiDAR. The laser receiving circuit includes an amplifying circuit, a DC bias circuit, and an analog-to-digital converter. The amplifying circuit is connected to the analog-to-digital converter and configured to amplify input first voltage signals to obtain second voltage signals, and the second voltage signals are AC voltage signals. The DC bias circuit is connected to the analog-to-digital converter and configured to generate reverse DC voltage signals, and the reverse DC voltage signals and the second voltage signals are superimposed to obtain third voltage signals. The analog-to-digital converter is configured to sample the third voltage signals.

Abstract: An embodiment of the present application relates to the field of radar technology, and discloses a method and a device for adjusting parameters of LiDAR, and a LiDAR. The method includes: acquiring 3D environment information around the LiDAR; identifying a scenario type where the LiDAR is positioned and a drivable area based on the 3D environment information; determining a parameter adjusting strategy of the LiDAR based on the scenario type and the drivable area; and adjusting current operating parameters of the LiDAR based on the parameter adjusting strategy.

Abstract: A mirror adjusting device, a reflecting assembly, a. LiDAR, and an intelligent driving apparatus are provided. The mirror adjusting device includes a mounting bracket, a fixing bracket, and an elastic assembly. The mounting bracket includes a mirror mounting structure for mounting a mirror at one side and an adjusting part at the opposite side. The adjusting part includes a first curved wall protruding in a direction away from the mirror mounting structure, and the middle of the first curved wall is provided with a connecting structure. The fixing bracket includes a groove at one side and a through hole on the other side. The groove includes a second curved wall recessed toward the other side of the fixing bracket, and the first curved wall abuts against the second curved wall. The elastic assembly includes an elastic member and a connecting member.

Abstract: A method and apparatus for improving laser beam ranging capability of a LiDAR system and a storage medium are provided. The method includes: acquiring a first current signal output by a receiving sensor and a second current signal output by a reference sensor; determining a cancellation residue based on the first current signal and the second current signal; determining whether glare noise exists in echo lights based on the cancellation residue; and adjusting a bias voltage at a receiving end of the LiDAR system in a case that the glare noise exists in the echo lights.

Abstract: The present application discloses improvements that can be implemented in a laser detection and ranging (LiDAR) device to achieve accurate obstacle detection and to reduce measurement errors. A LiDAR device uses laser beams to scan a surrounding region to detect and identify objects. In one embodiment, the LiDAR control system is configured to refine a scanning region based on scanning results. The LiDAR control system may divide a scanning region into multiple sub-areas for differentiated scanning efforts. For example, the LiDAR control system may select a sub-area for enhanced scanning, e.g., with increased resolution. Methods for achieving scanning accuracy, increasing signal robustness, and reducing reflective noises are also disclosed.

Abstract: This application discloses a point cloud motion compensation method and apparatus, a storage medium, and a LiDAR. The method includes: obtaining a millimeter-wave point cloud data frame by a millimeter-wave radar through scanning a preset working region, where each millimeter-wave point cloud data frame includes multiple pieces of millimeter-wave point cloud data, and each piece of millimeter-wave point cloud data includes a timestamp and a motion parameter of a target object; obtaining a LiDAR point cloud data frame by the LiDAR through scanning a preset working region, where each LiDAR point cloud data frame includes multiple pieces of LiDAR point cloud data, and each piece of LiDAR point cloud data includes a timestamp and spatial position coordinates of the target object; fusing the millimeter-wave point cloud data with the LiDAR point cloud data; and performing attitude compensation on the LiDAR point cloud data based on the fused data.

Abstract: A laser receiving device includes a laser receiving plate, a laser receiving unit, and a first emitting optical adjustment unit. The laser receiving unit is arranged on the surface of the laser receiving plate for receiving echo laser signals. The first emitting optical adjustment unit is arranged on one side of the laser receiving unit for adjusting emission directions of laser beams entering an optical surface of the first receiving optical adjustment unit to the laser receiving unit.

Abstract: A radar data processing method, a terminal device, and a computer-readable storage medium are provided. The method includes: obtaining a target receiving unit group corresponding to an emission unit; obtaining echo data received by the target receiving unit group; converging the echo data to obtain a convergence result; and determining a distance of a target object based on the convergence result.

Abstract: A LiDAR performance detection method, a device, and a computer storage medium are provided. The method includes: acquiring a target signal in a target monitoring mode within a blanking interval; determining a measurement value in the target monitoring mode based on the target signal in the target monitoring mode within the blanking interval; and determining that the transceiver module of the LiDAR is abnormal when the measurement value in the target monitoring mode is not within a preset range.

Abstract: The present application discloses an abnormal field of view recognition method and device, a storage medium, and a MEMS LiDAR. The method includes respectively adjusting angles of a galvanometer in an X axis and a Y axis when the MEMS LiDAR is started; acquiring echo data from scanning a window at the adjusted angles of the galvanometer in the X axis and the Y axis; acquiring distances, from the echo data, between an upper edge, a lower edge, a left edge, and a right edge of the window and the MEMS LiDAR; and determining whether a field of view of the galvanometer is abnormal or not based on the distances between the upper edge, the lower edge, the left edge, and the right edge of the window and the MEMS LiDAR.

Abstract: An optical emitting device and an optical sensor are provided. The optical emitting device includes a body, a light source, and a first light-blocking structure. The body has an emitting cavity extending in a first preset direction. The emitting cavity has an incident light port and an emergent light port that are arranged in the first preset direction. An inner wall of the emitting cavity has a first inner wall portion and a second inner wall portion. The first inner wall portion and the second inner wall portion are oppositely arranged. The light source and the body are arranged in the first preset direction. The first light-blocking structure is arranged in the first inner wall portion of the emitting cavity. A light-transmitting channel is arranged between the first light-blocking structure and the second inner wall portion. The first light-blocking structure includes a plurality of first light-blocking sheets.

Abstract: This application provides an obstacle detection method and apparatus and a storage medium, where the method includes: obtaining point cloud data in an Nth detection sub-range of LiDAR in a preset sequence, wherein a detection range of the LiDAR in a detection cycle includes M detection sub-ranges, the Nth detection sub-range is any one of the M detection sub-ranges, M is an integer greater than or equal to 2, and N is an integer less than or equal to M; calculating confidence that the Nth detection sub-range includes a preset target object based on the obtained point cloud data in the Nth detection sub-range; and if the confidence is greater than or equal to the preset threshold, output an identification result of the preset target object. In the obstacle detection method provided in this application, real-time performance for detecting an obstacle by LiDAR is improved.

Abstract: This application discloses a LiDAR adjustment method, circuit, and apparatus, a LiDAR, and a storage medium. The method is applied to the LiDAR having a photoelectric sensor, and the method includes: obtaining an operating temperature of the photoelectric sensor; determining a target bias voltage based on the operating temperature, where the target bias voltage is a difference between voltages applied to a cathode and an anode of the photoelectric sensor; and based on the target bias voltage, adjusting the voltages applied to at least one of the anode and the cathode of the photoelectric sensor.

Abstract: A radar data transceiver, a ranging method, and a LiDAR are provided. The transceiver includes: a synchronization module, configured to generate a synchronization signal and send the synchronization signal to an emission module and a receiving module separately; the emission module, connected with the synchronization module and configured to delay the synchronization signal according to a preset delay policy, generate a first emission signal, and emit the first emission signal; and the receiving module, connected with the synchronization module and configured to receive a reflected signal, generate a first histogram according to the reflected signal and the synchronization signal, and superimpose histograms obtained by n measurements to generate an echo signal.

Abstract: A LiDAR is provided. The LiDAR includes two laser emission modules and one laser receiving module. The two laser emission modules are located separately on opposite sides of the laser receiving module, and a combination of emission fields of view of the two laser emission modules matches a receiving field of view of the laser receiving module.