Abstract: A correction device including a photon number counting unit that counts a photon number on the basis of an output signal output from a light receiving unit, a correction value acquiring unit that acquires a correction value corresponding to the photon number, and a correction unit that performs correction based on the correction value.

Abstract: A three-dimensional wind vector field measurement system employs convergent beams for localised velocity measurement enabling mapping of the wind field across an extended spatial region. This enables characterisation of complex field signatures. This enables advanced control and protective systems for wind turbines. This also enables improved wind harvesting. This also enables improved prospecting. This also enables improved equipment selection. Buoy mounted systems enable measurement in an offshore environment.

Abstract: A coherent lidar system, a method of assembling the system and a vehicle including the system involve a light source to output a continuous wave, and a modulator to modulate a frequency of the continuous wave and provide a frequency modulated continuous wave (FMCW) signal. The system includes a a splitter to split the FMCW signal to two or more paths, and two or more aperture lenses. At least one of the two or more aperture lenses is associated with each of the two or more paths and is configured to obtain a receive beam resulting from a reflection of an output signal obtained from the FMCW signal.

Abstract: A light detection and ranging (LIDAR) system includes a first optical source to generate a first optical beam, a first collimating lens to collimate the first optical beam, a first prism wedge of a first prism wedge pair to redirect the first optical beam, and a first focusing lens to focus the first optical beam on a front surface of a second prism wedge of the first prism wedge pair, the second prism wedge to direct the first optical beam toward an output lens.

Abstract: A vehicle including one or more sensors, a light detection and ranging (lidar) sensor and a lidar prediction system. The one or more sensors include an optical sensor, a radar sensor, or both, configured to capture sensor data of a particular view. The lidar sensor is configured to capture lidar data of the particular view. The lidar prediction system includes a predictive model. The lidar prediction system is configured to generate a predicted lidar frame comprising applying the predictive model to the sensor data and send the predicted lidar frame to an external system.

Abstract: An object of the present invention is to provide a time measurement device that facilitates a circuit layout. A time measurement device (20) of the present invention includes: a plurality of pixels (30) provided side by side in a first direction, and each including a single-photon avalanche diode (SPAD) disposed on a first semiconductor substrate, and each generating a first logic signal (S35) depending on detection timing in the single-photon avalanche diode (SPAD); and a time measurement section (24) that is disposed on a second semiconductor substrate attached to the first semiconductor substrate and measures the detection timing in each of the plurality of pixels (30).

Abstract: A system for detecting a vehicle includes a light source configured to emit a light signal. The system also includes a receiver sensor configured to receive a reflected light signal based at least in part on the light signal reflected from a plurality of reflectors. The system also includes a controller, the controller configured to identify an arrangement pattern of the plurality of reflectors based at least in part on the reflected light signal and determine that plurality of reflectors are coupled to another vehicle based at least in part on an identification of the arrangement pattern.

Abstract: A coherent lidar system, a method of operating the coherent lidar system and a vehicle including the coherent lidar system involve a beam steering device to direct output light from the system within a field of view. A first series of positions of the beam steering device defines a first scan pattern within the field of view and a second series of positions of the beam steering device defines a second scan pattern within the field of view. The coherent lidar system includes a controller to provide transition positions to the beam steering device to transition the beam steering device from the first scan pattern to the second scan pattern. The transition positions follow a basis spline (B-spline) function.

Abstract: A coherent lidar system includes a light source to output a continuous wave, and a modulator to modulate a frequency of the continuous wave and provide a frequency modulated continuous wave (FMCW) signal. The system also includes an aperture lens to obtain a receive beam resulting from a reflection of an output signal obtained from the FMCW signal, and an optical amplifier in a path of the receive beam to output an amplified receive beam. A method of fabricating the system includes arranging a light source to output a continuous wave, and disposing elements to modulate the continuous wave and provide the FMCW signal. The method also includes arranging an aperture to obtain a receive beam resulting from a reflection of an output signal obtained from the FMCW signal, and disposing an optical amplifier in a path of the receive beam to output an amplified receive beam.

Abstract: In accordance with an irradiation position of pulsed light, a selecting unit outputs a first transfer signal to a first transfer electrodes and outputs a second transfer signal to a second transfer electrodes, to allow signal charges to flow into first and second signal charge-collecting regions of a pixel corresponding to the irradiation position, and outputs a third transfer signal to a third transfer electrodes to allow unnecessary charges to flow into an unnecessary charge-discharging regions of a pixel other than the pixel corresponding to the irradiation position. An arithmetic unit reads out signals corresponding to respective quantities of signal charges collected in the first and second signal charge-collecting regions of the pixel selected by the selecting unit, and calculates a distance to an object based on a ratio between a quantity of signal charges collected in the first signal charge-collecting regions and a quantity of signal charges collected in the second signal charge-collecting regions.

Abstract: A signal processing system includes a time domain processing component to receive samples of a range-dependent time domain baseband signal in a frequency modulated continuous wave (FMCW) light detection and ranging (LIDAR) system, to separate the samples of the baseband signal into frequency subbands in the time domain based on subband typing criteria, and to select subband processing parameters for the frequency subbands in the time domain and the frequency domain based on the subband typing criteria. Subband processors selectively process the frequency subbands in the time domain and the frequency domain based on the processing parameters.

Abstract: Disclosed are techniques for improving the probability of detection and the probability of false alarm of a light detection and ranging (LiDAR) system. A receiver of the LiDAR system is configured to obtain a noise signal vector for an operation condition and determine the coefficients of a matched filter based on the noise signal vector. The matched filter is used to filter a returned signal vector corresponding to returned light detected by the receiver. The receiver detects an object in the field of view of the LiDAR system based on identifying, in the returned signal vector filtered by the matched filter, a pulse having a peak higher than a threshold value. In some embodiments, the receiver is configured to determine the threshold value based on the noise signal vector, energy of the transmitted signal, and a desired false alarm rate.

Abstract: A lidar system operating in a vehicle comprising a first eye configured to scan a first field of regard and a second eye configured to scan a second field of regard. Each of the first eye and the second eye includes a respective optical element configured to output a beam of light, a respective scan mirror configured to scan the beam of light along a vertical dimension of the respective field of regard, and a respective receiver configured to detect scattered light from the beam of light. The field of regard of the lidar system includes the first field of regard and the second field of regard, combined along a horizontal dimension of the first field of regard and the second field of regard.

Abstract: A method, device and system for generating a transformation function, mapping position detections of objects in a scene, detected with a positioning device, to a graphical representation of the scene. The teachings enable the detected positions by the positioning device to be mapped to the graphical representation of the monitored scene without the need of previous references to geographical coordinate systems for the positioning device and the graphical representation of the scene. Virtually any type of image may hence be used as a graphical representation of the scene, even hand-drawn sketches.

Abstract: A dynamic tracking system comprises a three-dimensional camera based on time-of-flight technology, which comprises a receiver sensitive to the light emissions comprised in a certain range of wavelengths, a first emitter of light signals, a micro-computer interfacing and computing three-dimensional information coming from the receiver and controlling the emitter, and an internal or external secondary computer incorporating data analysis, database services, controls and external interfacing to vehicle and local or global data communication services.

Abstract: A hybrid LIDAR system 100 includes a flash-based LIDAR detector array. A broad laser emitter is operatively connected to the LIDAR detector array for flash-based LIDAR sensing. A first beam steering mechanism is operatively connected with the broad laser emitter for scanning a scene with a broad beam from the broad laser emitter. A second beam steering mechanism is operatively connected with the LIDAR detector array for directing returns of the broad beam from the scene to the LIDAR detector array.

Abstract: An optical delay between a first fiber and a second fiber is temperature compensated by combining fibers with different thermal path length changes. In some examples, fibers with different buffer coatings exhibit different path length changes per unit length and temperature. Combining such fibers in a fiber array provides a path length difference that is substantially independent of temperature.

Abstract: To reduce power consumption in an apparatus for measuring a distance on the basis of a phase difference between light beams. A distance measuring apparatus includes: a phase difference detecting section; and a distance measuring section. In the distance measuring apparatus, the phase difference detecting section detects a phase difference between light beams from a pair of external light sources. In addition, in the distance measuring apparatus, the distance measuring section acquires any one of a distance from one of the pair of external light sources and an interval between the pair of external light sources as known data and measures a distance from another of the pair of external light sources on a basis of the known data and the phase difference.

Abstract: A lidar system includes one or more light sources configured to emit light pulses, a scanner configured to direct the emitted light pulses as beams along one or more scan directions to illuminate, for each orientation of the scanner with each of the plurality of beams, a respective light-source field of view corresponding to a respective pixel, and a receiver configured to detect the light pulses scattered by one or more remote targets. The receiver includes a first, second, and third detectors to detect light pulses associated with respective beams. Each detector has a separate detector field of view within which the detector receives scattered light. A spatial separation between the first detector and the second detector is greater than a spatial separation between the second detector and the third detector.

Abstract: An objective sensor, a dirt determination method thereof, and an object detection device according to the present invention, individually transmit transmission waves in a plurality of mutually different directions and receive the respective reflected wave thereof, through a protective member, so as to measure, with the plurality of directions as a plurality of measurement points, a transmission and reception time and the intensity of the reflected wave for each of the plurality of measurement points.