Abstract: A light detection and ranging (LiDAR) method may include generating, by a first transmitter, a first light illumination signal; generating, by a second transmitter, a second light illumination signal; receiving first return signals corresponding to the first light illumination signal; receiving second return signals corresponding to the second light illumination signal; and sampling the first return signals or the second return signals during a short-range sampling period, such that the short-range sampling period avoids a period of dazzle.

Abstract: A method of processing radar signalling, the method comprising: receiving a mask (815) that represents samples in the radar signalling that are detected as including interference. The mask (815) comprises a matrix of data having a first dimension and a second dimension, wherein the first dimension represents a fast-time axis and the second dimension represents a slow-time axis. The method further comprises performing frequency analysis on the mask (815) across each of the fast-time axis and the slow-time axis of the mask in order to provide a range-Doppler processed mask (817); and deconvolving a range-Doppler map (813) of the received radar signalling using the range-Doppler processed mask (817) in order to provide a deconvolved-range-Doppler map (814).

Abstract: An antenna alignment device includes an embedded (or is connected to) direct current (DC) voltmeter. In addition to using different sensors for azimuth and tilt alignment of an antenna, the DC voltmeter may be used to measure the DC voltage indicative of received signal strength at the antenna. The received signal may have a transmission pattern generated by a far side antenna. Particularly, the DC voltmeter may be used to detect peaks in the DC voltage and count the number of detected peaks as the antenna is moved changing its azimuth and the tilt. An odd number of peaks indicates the boresight of the antenna is in the main lobe of the transmission pattern, and an even number of peaks indicates otherwise. The highest peak in the odd number of peaks corresponds to the main lobe and the boresight of the antenna is aligned/tuned toward the highest peak.

Abstract: A method for determining a distance of an object with the aid of an optical detection apparatus and such an apparatus are described. A light signal pulse is emitted and reflected at the object, and is received as an echo light signal pulse. The echo light signal pulse is divided upon reception into temporally successive discrete reception time windows and converted into corresponding electrical energy. The end of the respective conversion is in each case assigned as the sampling time to the corresponding time window. The electrical energies of the time windows are compared in each case with a threshold value. As soon as the electrical energy of a first reference reception time window is greater than the threshold value, a linear interpolation of the temporal profile of the discrete electrical reception signal is carried out temporally before the sampling time of the first reference time window.

Abstract: A LiDAR and a movable device are disclosed. The LiDAR includes a first optical transceiving module, a first reflecting module, and a galvanometer module. The galvanometer module includes a galvanometer and a first driving mechanism. The galvanometer is configured to receive a detection light emitted from the first reflecting mirror of the first reflecting module, and scan a target object. The first driving mechanism is connected to the galvanometer, and the first driving mechanism is configured to drive the galvanometer to move between a first preset position and a second preset position.

Abstract: A LIDAR system is disclosed. The system may include a laser light projection system that may simultaneously provide at least two laser light beams. The system may also include an optical system, including one or more deflectors to project the at least two laser light beams toward a field of view of the LIDAR system. Each of the laser light beams may have an energy density below an eye safe level. However, a total combined energy density of the laser light beams may exceed an eye safe level. The laser light beams may be projected from the deflector are spaced apart from one another by an angular spacing ranging from 2.5 mrad to 6 mrad.

Abstract: An on-vehicle radar apparatus according to one aspect of the present disclosure is provided with a first radar antenna pattern unit, a second radar antenna pattern unit, a printed circuit board and a cover. In the cover, both of the first inclined surface and the second inclined surface are inclined closer towards the printed circuit board with increasing distance from the ridge portion.

Abstract: A multi-hypothesis spatially-variant autofocus system for processing and focusing radar images, such as synthetic aperture radar (SAR) imagery, is configured to compute phase corrections and apply multiple autofocus strategies to overlapping image tiles for progressively smaller image tile sizes. Correction factors for the image tiles may be selected on a per-tile basis based on various metrics. In some embodiments, one or more phase-gradient autofocus (PGA) algorithms may be applied to window-size weighted versions of the overlapping image tiles for the progressively smaller image tile sizes.

Abstract: Embodiments of this application provide a laser scanning apparatus, which is a key component of a Lidar and may be used in fields such as autonomous driving and intelligent driving. The scanning apparatus includes: a scanning micromirror chip, a packaging shell, and a packaging component. The scanning micromirror chip includes a scanning micromirror and a laser, where the scanning micromirror and the laser are integrated at different positions of the scanning micromirror chip. The packaging shell is located on the scanning micromirror chip, and forms a hollow structure together with the scanning micromirror chip. Both the laser and the packaging component are located in the hollow structure. In addition, the packaging component is fixed on the packaging shell, and is configured to collimate and reflect a beam emitted by the laser, and emit an output beam to the scanning micromirror.

Abstract: An electronic device includes an ultra-wide band (UWB) circuit, and at least one processor comprising a controller of UWB circuit. The at least one processor is configured to transmit, through UWB circuit operating in a first mode, a first signal for a first field in a first frame, transmit, through UWB circuit operating in the first mode, a second signal including designated information for a second field in the first frame, receive, through UWB circuit operating in the first mode, a first reflected signal related to the first signal and a second reflected signal related to the second signal, respectively, caused by an external object, according to a state of the designated information identified from the second reflected signal, obtain information on the external object based on the first reflected signal or transmit a second frame through UWB circuit operating in a second mode.

Abstract: Systems, methods, and apparatus for performing an action when an aggregated confidence measure. Data is received from a first sensor proximate to a particular air space. Data is also received from a second sensor and a third sensor proximate to the particular air space. The data from the first sensor, second sensor, and third sensor are each analyzed to determine respective confidence measures that a UAV is within the particular air space. The first sensor corresponds to a first type of data, the second sensor corresponds to a second type of data, and the third sensor corresponds to a third type of data. The confidence measures from each sensor are aggregated together to generate a combined confidence measure indicating a possible presence of the UAV within in the particular air space. When the combined confidence measure exceeds a threshold, an action is taken.

Abstract: A method for aligning a calibration device with a vehicle based on a wheel aligner and a calibration system are provided. The wheel aligner includes an image sensor and a computer. The computer controls at least one image sensor to image a vehicle-mounted target on a vehicle, and processes the obtained image to determine a position of the vehicle. The computer controls the at least one image sensor to image a reference target on a calibration device, and processes the obtained image to determine a position of the calibration device. The computer determines an adjusting mode of the calibration device according to the position of the vehicle and the position of the calibration device, so that the calibration device is aligned with the vehicle according to an anticipated position or direction. The method can guide an operator to accurately align the calibration device with the vehicle.

Abstract: Provided is a sensor device including: a sensor device including: a sensor unit that emits light and receives light reflected by an object; and a reflection mirror unit that reflects light emitted from the sensor unit. A reflection surface of a reflection mirror included in the reflection mirror unit includes a first part and a second part having lower reflectance than the first part.

Abstract: The disclosure provides a radar ranging method and device, a radar, and an in-vehicle system. An example method includes: obtaining a pulse waveform of a transmit signal sent to a target object by a radar; obtaining a sampling sequence of an echo signal received by the radar; determining, in sampling points on a rising edge of the sampling sequence, a first timing point used to indicate a receive moment of the echo signal; determining, based on the first timing point and the pulse waveform of the transmit signal, a second timing point used to indicate a transmit moment of the transmit signal; and calculating a distance between the radar and the target object based on the first timing point and the second timing point.

Abstract: A LiDAR sensor includes a first lens, a first laser source configured to emit a plurality of first light pulses to be collimated by the first lens, a flood illumination source configured to emit a plurality of second light pulses as diverging light rays, a second lens configured to receive and focus (i) a portion of any one of the plurality of first light pulses and (ii) a portion of any one of the plurality of second light pulses that are reflected off of the one or more objects, a detector configured to detect (i) the portion of any one of the plurality of first light pulses and (ii) the portion of any one of the plurality of second light pulses, and a processor configured to construct a three-dimensional image of the one or more objects based on the detected portions of first light pulses and second light pulses.

Abstract: An electronic device includes a transmission antenna that transmits a transmission wave, a reception antenna that receives a reflected wave that is the transmission wave having been reflected, and a control unit that detects an object that reflects the transmission wave, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The control unit performs control to detect, as a target, an object having a motion characteristic of a motion of an arm of a person, among objects located around the electronic device.

Abstract: A light detection and ranging (LIDAR) system for a vehicle can include: a light source configured to output a beam; a photonics integrated circuit (PIC) including a semiconductor die, the semiconductor die comprising a substrate having two or more semiconductor devices formed on the substrate, the two or more semiconductor devices configured to receive the beam from the light source and modify the beam and at least one photonics die coupled to the semiconductor die, the at least one photonics die comprising at least a transmitter configured to receive the beam from the semiconductor die; and one or more optics configured to receive the beam from the transmitter and emit the beam towards an object in an environment of the vehicle.

Abstract: Airborne LiDAR bathymetry systems and methods of use are provided. The airborne LiDAR bathymetry system can collect topographic data and bathymetric data at high altitudes. The airborne LiDAR bathymetry system has a receiver system, a detector system, and a laser transmission system.

Abstract: A detection device with an optical device comprising at least one light source and at least one light sensitive element optically decoupled inside the detection device. A protective housing encloses the optical device. An optical cover comprising an internal surface facing the optical device and an external surface opposite to the internal surface, wherein the optical cover is transparent at the operating wavelength of the optical device, and comprises at least two separate apertures. A first aperture faces the light source and a second aperture faces the light sensitive element. The optical cover is one piece comprised of diffusing, absorbing, multilayer elements, and/or wavelength-changing elements placed between the first and second apertures in an optical decoupling zone outside the field of view of the light source and the sensitive element to avoid the stray light travelling from the light source to the sensitive element within the optical cover.

Abstract: A radar-absorbing fiber-reinforced structure includes a fiber composite discharging part. The fiber composite discharging part includes a first electrode part and a second electrode part, which are spaced apart from each other by a dielectric layer and receive different voltages. The fiber composite discharging part is configured to discharge plasma in response to a voltage difference thereby changing a reflected wave or transmitted wave of a radar incident on the radar-absorbing fiber-reinforced structure to reduce reflectivity of the radar. At least one of the first electrode part and the second electrode part include a conductive fiber having a tensile strength equal to or more than 0.5 GPa.