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52 results about "Optical radar" patented technology

UAV route generation method and device, UAV and storage medium

An embodiment of the invention discloses a UAV route generation method, a UAV route generation device, a UAV and a storage medium. The UAV route generation method comprises the steps of: acquiring a digital surface model of a to-be-operated region, wherein the digital surface model comprises elevation information of the to-be-operated region; generating an initial route of the to-be-operated region according to the digital surface model, wherein the initial route comprises a flight height of the UAV; determining an obstacle avoidance region in the initial route according to the elevation information and flight height; and adjusting the initial route based on the obstacle avoidance region to generate a target route. The UAV route generation method and the UAV route generation device do notneed to adopt acoustic radar or optical radar ranging to determine obstacles, solve the problem of UAV explosion accidents because the UAV cannot avoid obstacles timely when acoustic radar or opticalradar ranging and obstacle avoidance is adopted, determine the obstacle avoidance region precisely by means of the elevation information of the digital surface model and flight height, can generate aneffective obstacle-avoiding fight route, and guarantee the flight safety of the UAV.
Owner:GUANGZHOU XAIRCRAFT TECH CO LTD

Orthoptic synthetic aperture laser imaging radar

ActiveCN102435996AReduce the effects of phase interferenceBig optic toesElectromagnetic wave reradiationHigh resolution imagingRadar systems
The invention relates to an orthoptic synthetic aperture laser imaging radar. The orthoptic synthetic aperture laser imaging radar comprises a laser light source, a transmission polarization beam splitter, a horizontal polarization optical path beam deflector, a horizontal polarization optical path transform lens, a vertical polarization optical path beam deflector, a vertical polarization optical path transform lens, a transmission polarization beam combiner, a transmitter telescope ocular, a transmitter telescope primary lens, a receiver telescope, a receiving polarization beam splitter, a 2 * 490 DEG optical bridge, an inphase channel balanced detector, an inphase channel A / D (analogue / digital) converter, a 90 DEG of phase shift channel balanced detector, a 90 DEG of phase shift channel A / D (analogue / digital) converter, a pluralizing processor, a digital image processor and a control computer. The orthoptic synthetic aperture laser imaging radar automatically eliminates phase changes and interference of atmosphere, motion platforms, optical radar systems and speckles, has high resolution imaging in larger optical footprint and larger receiving aperture, does not need optical delay lines, does not need real-time beat frequency signal phase synchronization, does not have shadows during imaging, and can be used for various lasers with single-module and single-frequency properties.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI

Method for testing lightwave transmission characteristics in atmospheric channel

The invention relates to a method for testing lightwave transmission characteristics in an atmospheric channel, which belongs to the technical field of optics and is used in fields such as wireless optical communication, optical radar and the like. A testing system which comprises a laser emission subsystem, a receiving subsystem and a data processing subsystem is set up, wherein the receiving subsystem comprises two independent receiving light paths: one is a Fresnel screen receiving light path which consists of a Fresnel lens, a field lens and a No. I digital camera and is used for testing attenuation, drift and extension; and the other is an arrival angle fluctuation receiving light path which consists of a receiving lens and a No. II digital camera and is used for testing arrival angle fluctuation. The invention only adopts one set of testing system to carry out the testing of four types of turbulence effects and an attenuation effect, thus having great significance in reducing the number of hardwares needed by the testing of the atmospheric turbulence effects and the attenuation effect, reducing the number of testers, expenditure and period, realizing the miniaturization, light weight and low power consumption of the testing system and implementing quick, convenient and overall lightwave transmission characteristic tests.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Light-based radar system for augmented reality

ActiveUS20160343169A1Streamlining disclosureImage enhancementImage analysisRadar systemsDisplay device
A system and method for measuring depth using an optical radar system are described. The system includes an optical radar, a camera, a display, and a processor. The optical radar emits a signal towards an object. The processor identifies an object depicted in an image captured with the camera. The processor generates the signal with a non-repeating pattern of amplitude and frequency, and computes a depth of the object based on a difference in phase angle between the signal emitted from the optical radar and a return signal received at the optical radar. The depth includes a distance between the optical radar and the object. The processor generates AR content based on the identified object and adjusts a characteristic of the AR content in the display based on the computed depth of the object.
Owner:META PLATFORMS TECH LLC

Systems and methods for quantum receivers for target detection using a quantum optical radar

A quantum-illumination receiver is described comprising a phase-conjugation and mixing system for mixing and / or conjugating the idler beam from an entangled light transmitter and the return beam from the target to produce an output beam that is representative of the presence or absence of the target, a light beam collector for receiving a return light beam from the target region and directing the return light beam from a target region to the phase-conjugation and mixing system input, an optical input for receiving an idler light beam from a transmitter and directing the idler light beam from the transmitter to the phase-conjugation and mixing system, a sensor for measuring the output of the phase-conjugation and mixing system, and a processor to process the output of the sensor to make an determination about the presence of the target.
Owner:RAYTHEON BBN TECH CORP

Three-dimensional image sensor, optical radar apparatus, and processing apparatus

An object is to realize a low-cost three-dimensional image sensor capable of providing a wide measurement range. The three-dimensional image sensor includes a light receiving unit including a plurality of pixels each including an SPAD (single-photon avalanche photodiode) configured to detect, in Geiger mode, a photon of incident light including reflected light from an object to be detected, a plurality of pixel storage elements provided for the respective pixels in a one-to-one manner, each pixel storage unit being configured to count a accumulated value of pulse signals output from a corresponding one of the pixels as a result of detecting photons for each of temporally successive time intervals, and a signal processing circuit (DS) configured to calculate distance information regarding a distance between a light receiving unit and an object for each pixel by using groups of accumulated values accumulated by the pixel storage elements.
Owner:SHARP KK

Three-dimensional image element and optical radar device

A three-dimensional image element and an optical radar device that have low cost and are capable of detecting a distance to a measurement object at a close distance before a final result of counting the number of pulses is acquired are realized. A pixel storage element has a plurality of binary counters that integrate the number of electrical pulses at mutually different timings and the reading of data by a signal processing circuit and the integration are able to be performed in parallel.
Owner:SHARP KK

A laser radar sensing illumination system and method

The invention discloses a laser radar sensing illumination system comprising a laser radar scanning device, a control center and an illuminating lamp. The laser radar scanning device comprises a laser emission module and a laser reception module. The control center comprises a master control circuit module and a PLC controller. The laser radar sensing illumination method comprises the following steps: an optical radar scanning device scans in the monitoring area and sends the scanning data to the master control circuit module; the master control circuit module receives the scanning data, obtains the distance of a monitoring target through calculation, and sends the distance information of the monitoring target to the master control circuit board; the PLC controller receives the monitoring target distance information and judges whether there is a moving object in the monitoring area according to the distance information, and sends a starting instruction to a lighting lamp if the PLC controller detects that there is a moving object in the monitoring area; and the lighting lamp receives the starting instruction of PLC controller and turns on the circuit lighting. Noise pollution due to sound control illuminating lamps can be eliminated, and convenience and rapidness are realized.
Owner:成都希德电子信息技术有限公司

Photoreceptor, flight time measurement device, and optical radar

ActiveUS20190170866A1Low costExtended maximum ranging distanceElectromagnetic wave reradiationPhotodetectorEngineering
A photodetector measures flight time by an imaging optical element imaging reflected light from an illuminated illumination region of an object illuminated by pulse light, and a light detection portion receiving the imaged light. The light detection portion is formed larger than a projection region reflected at the illumination region of the object and imaged on the light detection portion. In the light detection portion, a portion overlaying the projection region is activated as a light-detection region.
Owner:SHARP KK

Engine for video projection/digitiser/digital radar with multiple electromagnetic radiation beams

InactiveCN101389996AImplement Compensation MultiplexingCompensation multiplexingWave based measurement systemsTelevision system scanning detailsDigital videoHigh power lasers
The invention relates to an optical digital video projection device for multi beam projection onto any surface or into any volume in 2D or 3D, within a solid angle from 0 DEG to 360 DEG. The device can also be used in digitiser and / or radar function for the recording / digitisation of spatial and frequency information. The processing of electromagnetic radiation, for example, visible, infrared ultraviolet, microwave radiation in time, space and frequency either passively or actively for example, by means of mirror / filter windows permits a filter function specific to the target applications. The source uses a light source comprising, for example, a number of weak / medium / high power lasers coupled to a number of optical sources, optical source modules, coloured beam generators or optical matrix heads. The digitisation function uses, for example, a number of photodiode capture devices, charge coupled devices (CCD), etc. The function for digitisation / optical radar in 2D or 3D using light beams permits use in different types of application, in telecommunications, for road maritime, aerial or space navigation.
Owner:BREIZHTECH SAS

Aerospace emission light, thunder, remote and navigation satellite measurement data fusion processing method

ActiveCN111027204AImprove qualityCompensating for problems with real-time fusion methodsSustainable transportationDesign optimisation/simulationRadarRocket
The invention belongs to the field of spaceflight launching and the field of spaceflight measurement and control, and discloses an aerospace emission light, thunder, remote and navigation satellite measurement data fusion processing method. The method includes: firstly, establishing a kinetic equation of a carrier rocket by utilizing telemetry trajectory data; secondly, establishing observation equations of an optical, radar and navigation satellite measurement system and a jacobian matrix of each observation equation; secondly, fusing spaceflight launching optics, radar, telemetry trajectorydata and navigation satellite measurement data, and establishing a carrier rocket trajectory parameter filtering processing equation; and finally, calculating a carrier rocket trajectory parameter estimation value fusing spaceflight launching optics, radar, telemetry trajectory data and navigation satellite measurement data. According to the invention, the advantages of various trajectory data arefully utilized, and the technical problem of lack of real-time deep fusion processing of spaceflight emission optics, radar, telemetry trajectory data and navigation satellite measurement data is solved.
Owner:中国人民解放军63620部队

Systems and methods for quantum receivers for target detection using a quantum optical radar

A quantum-illumination receiver is described comprising a phase-conjugation and mixing system for mixing and / or conjugating the idler beam from an entangled light transmitter and the return beam from the target to produce an output beam that is representative of the presence or absence of the target, a light beam collector for receiving a return light beam from the target region and directing the return light beam from a target region to the phase-conjugation and mixing system input, an optical input for receiving an idler light beam from a transmitter and directing the idler light beam from the transmitter to the phase-conjugation and mixing system, a sensor for measuring the output of the phase-conjugation and mixing system, and a processor to process the output of the sensor to make an determination about the presence of the target.
Owner:RAYTHEON BBN TECH CORP

Optical radar

The invention discloses an optical radar. The optical radar includes a radar body, a light-emitting component, a light guiding element, a photoelectric receiving component and a processor; the light-emitting component is arranged on the radar body and emits a first light ray to a target object; the distance between the light guiding element and the radar body is a fixed value, and the light-emitting component emits a second light ray to the light guiding element; the photoelectric receiving component is arranged on the radar body and receives the first light ray reflected by the target object and the second light ray transmitted through the light guiding element, and converts the first light ray and the second light ray into electrical signals; and the processor is arranged on the radar body, is electrically connected with the photoelectric receiving component, and is used for calculating detection distance between the target object and the radar body and detection distance between the light guiding element and the radar body. The optical radar provided by the invention calibrates a system error of the optical radar by emitting the second light ray as a calibration light ray.
Owner:深圳市瑞大科技有限公司

Landslide deformation monitoring method and visual service platform

The invention relates to the technical field of remote sensing technologies, in particular relates to a landslide deformation monitoring method and a visual service platform, provides a landslide monitoring system method based on optical and radar data fusion by starting from landslide area features and utilizing the advantages brought by optical and radar image fusion, and solves the problems that a traditional landslide deformation monitoring method is low in precision, large in workload and high in cost. A landslide identification module, a deformation processing module, a risk assessment early warning module, a data management module and a visualization module are included. The landslide identification module is used for identifying a landslide area in a remote sensing image; the deformation processing module is used for extracting deformation characteristics in the landslide area; the risk assessment and early warning module is used for performing assessment and early warning on the risk of each landslide disaster; the data management module is used for storing various data in the system; and the visual analysis module is used for landslide area deformation data analysis and visual display.
Owner:NINGXIA UNIVERSITY

Optical radar apparatus

An SN ratio of light to be received is improved. A polarizing filter (150) that is arranged in a light path extending from an object (11) to a light receiving unit (154) of a ToF sensor (153) and allows transmission of light polarized in a direction vertical to a direction of scanning is provided.
Owner:SHARP KK

Three-dimensional imaging optical radar system based on LED light source

The invention provides a three-dimensional imaging optical radar system based on an LED light source. The three-dimensional imaging optical radar system based on the LED light source is used for lowering the cost of an existing 3D imaging optical radar system and comprises a high-power and high-speed LED light emitting assembly, a high-speed rotating modulation disk, a one-color CCD sensor, a three-unit optical imaging lens, a conversion imaging lens, an optical filter and a data processing module. The high-power and high-speed LED light emitting assembly conducts floodlighting on a target area in an imaging view field according to square wave drive, an echo light beam reflected by a target passes through the optical filter and then reaches the three-unit optical imaging lens, the light beam is imaged on the high-speed rotating modulation disk through the three-unit optical imaging lens, and then the light beam passes through the conversion imaging lens and is imaged on the one-color CCD sensor after being modulated. The output end of the one-color CCD sensor is connected with the data processing module. According to the three-dimensional imaging optical radar system based on the LED light source, through the reasonable 3D imaging mechanism, low-cost high-power and high-speed LEDs and the CCD sensor are adopted, so that the cost of the whole imaging radar is reduced, and imaging of a moving target is achieved.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Forest biomass estimation method considering harmonic model coefficient and phenological parameter

The invention discloses a forest biomass estimation method considering harmonic model coefficients and phenological parameters. The method comprises the following steps: S1, image acquisition and preprocessing; s2, establishing an MCCDC model based on multi-source remote sensing data; s3, forest annual phenology extraction based on a logistic regression equation; and S4, forest biomass mapping based on phenological parameters. Forest phenological parameters extracted based on remote sensing and a constructed harmonic model MCCDC coefficient serve as input variables of tree species classification and biomass modeling, optical remote sensing and radar images are coupled on the basis of improving the forest tree species group mapping precision, an optical-radar-phenological model is constructed according to tree species, and the forest species group mapping precision is improved. The defect that the influence of the tree species on the modeling precision is not distinguished during traditional AGB modeling is overcome to a certain extent, and therefore the precision of regional scale forest biomass mapping is improved.
Owner:NANJING FORESTRY UNIV

3D imaging optical radar system based on LED light source

The invention provides a 3D imaging optical radar system based on an LED light source. The 3D imaging optical radar system is used for reducing cost of an existing 3D imaging optical radar system. The 3D imaging optical radar system comprises a high-power high-speed LED light emitting assembly, a high-speed rotating modulation disc, a first optical imaging lens, a second optical imaging lens, three imaging assemblies, a light filter, a light splitter and a data processing module. Echo light beams reflected by a target reach the first optical imaging lens after passing through the light filter to be imaged on the high-speed rotating modulation disc, modulated light waves then enter the second optical imaging lens, and light outputted by the second optical imaging lens passes through the light splitter and then enters the three imaging assemblies; each imaging assembly comprises an optical imaging lens and a single-color CCD sensor, wherein light reaches the single-color CCD sensor after passing through the optical imaging lens, and the output end of the single-color CCD sensor is connected with the data processing module. Through a reasonable 3D imaging mechanism, high-power high-speed LEDs low in cost and the CCD sensors low in cost are adopted, and therefore cost is greatly reduced.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA

Simultaneous measurement of range and velocity using optical radar

A light detection and ranging system includes optical sources configured to emit respectively first and second optical beams that have opposite polarizations. Taps split the first and second optical beams into first and second high-power path and low-power path optical beams. A first polarization beam splitter combines the first and second high-power path optical beams into a single spatial mode optical beam, which lensing optics launches toward the target, and collects light incident upon the target into a return path. A second polarization beam splitter splits the return optical beam into first and second spatial mode optical beams. Mixers mix the first and second spatial mode optical beams with respectively the first and second low-power path optical beams to produce optical beams first and second beat frequencies, which optical detectors detect and from which range and velocity of the target are determinable.
Owner:AEVA INC

Pulsed light irradiation/receiving device, and optical radar device

The present invention can prevent the occurrence of blind spots, and can improve the intensity of light irradiated onto an object with a small number of optical members regardless of the distance to the object. A pulsed light emitting element 70 emits pulsed light that is linearly polarized in a first polarization direction, the pulsed light 1 passes through a polarizing beam splitter 60 and a lens 50 in this order and is radiated onto a target object 3, reflected light 2 passes through the lens 50 and the polarizing beam splitter 60 in this order, is linearly polarized in a second polarization direction that is different from the first polarization direction, and is concentrated on a light receiving element 80, the pulsed light emitting element 70 and the light receiving element 80 are provided on a focal plane of the lens 50, and the optical axis of the pulsed light 1 and the optical axis of the reflected light 2 overlap.
Owner:SHARP KK

Method for autonomous parking of a vehicle, and automatic drive vehicle

The present disclosure relates to a method for autonomous parking of a vehicle, and an automatic drive vehicle. The vehicle receives an input signal for parking the vehicle in parking premises (100) comprising a plurality of parking space (102) having an elevated parking boundary indicator (101). The vehicle (103) obtains a map of the parking premises (100). Further, the vehicle (103) receives a plurality of LIDAR data points (205) of the parking premises (100) and identifies a plurality of linear patterns from the plurality of LIDAR data points (205). Thereafter, the vehicle (103) detects atleast two linear patterns (401) from the plurality of linear patterns, having a predefined length and parallelly spaced apart, indicating the elevated parking boundary indicator (101) of an availableparking space, where the vehicle (103) can be autonomously parked in the available parking space.
Owner:WIPRO LTD

Optical radar device

ActiveUS20200142072A1Wide incidence-angle rangeCoupling light guidesTelescopesAngle of incidenceEngineering
[Object] To provide a technology in flash LiDAR applicable to a wide incidence-angle range.[Solution] An optical radar device (100) includes a light emitting unit (110) that diffusively radiates a laser beam, an arrayed light receiving unit (120) that receives the laser beam emitted from the light emitting unit (110) and reflected off an object whose range is to be determined (10), the arrayed light receiving unit (120) including light receiving elements arrayed two-dimensionally, and a telecentric lens (140) disposed between the object whose range is to be determined and the light receiving element.
Owner:SHARP KK

Optical radar-based driving assisting method

The invention discloses an optical radar-based driving assisting method. The method comprises the following steps that: an optical radar emits a plurality of laser beams to continuously scan the surrounding environment of a vehicle so as to acquire previous point cloud information and current point cloud information, wherein the previous point cloud information comprises a plurality of first pointcloud positions, and the current point cloud information comprises a plurality of second point cloud positions; a plurality of first reliable point cloud positions are screened from the first point cloud positions so as to form first reliable point cloud information, and a plurality of second reliable point cloud positions are screened from the second point cloud positions so as to form second reliable point cloud information; iterative operation is performed on the first reliable point cloud information and the second reliable point cloud information, so that the relative change informationbetween the first reliable point cloud information and the second reliable point cloud information is obtained; and the current position of the vehicle is calculated according to the previous positionof the vehicle and the relative change information.
Owner:HUA CHUANG AUTOMOBILE INFORMATION TECHN CENT

Sensing device with conical reflector for making two-dimensional optical radar

The present invention provides a sensing device with a conical reflector for making a two-dimensional optical radar that mainly diffuses a light source using a diffusing element to form a diffused light, and directs the light source onto a reflection surface of a reflective element, after the diffused light is reflected to a reflector through the reflection surface, the reflector then reflects the diffused light to form a reflected light, and reflects the reflected light onto the reflection surface in order that the reflected light is reflected onto an optical lens through the reflection surface, and finally, the reflected light is directed onto a sensing module through the optical lens, and the reflected light is received through the sensing module; thereby achieving the effects of omnidirectional real-time scanning, one-time detection of 360-degree environmental characteristic points, and accurately and stably providing relative positions between each characteristic point and a robot.
Owner:YAN JASON

Self-adaptive transfer device for power battery of new energy automobile

The invention discloses a new energy automobile power battery self-adaptive transshipment device which comprises a movable frame, a lifting bracket assembly, a transshipment clamping table and a positioning supporting table, the lifting bracket assembly is fixedly installed on the surface of the movable frame, and the lifting bracket assembly comprises a lifting guide frame, a moving arm, a bracket deflection steering wheel and a deflection steering engine; a lifting frame is slidably mounted on the inner side of the lifting guide frame, and the bracket deflection steering wheel is fixedly mounted at the top end of the lifting frame. According to the transport vehicle, by arranging an automatic guide type vehicle body structure and utilizing electromagnetic or optical or radar laser automatic guide mechanisms of equipment, the transport vehicle can run along a specified guide path, has safety protection and various transfer functions, and is provided with a trolley programming device, a parking selection device, safety protection and various transfer functions; and under the monitoring of a computer, the self-adaptive transshipment robot can be autonomously driven in an unmanned manner according to an instruction, automatically runs along a specified guide path and arrives at a specified place, so that a self-adaptive transshipment task is completed.
Owner:江苏英拓动力科技有限公司

Optical radar apparatus

ActiveCN110412600ALow costWithout reducing the maximum measuring distanceElectromagnetic wave reradiationPhoto irradiationEngineering
The present invention provides a non-mechanical-scanning-type optical radar apparatus that is capable of long distance measurement and its cost is reduced. The optical radar apparatus (100) includes:a light emitting section (110); and a light receiving system (140), the light receiving system (140) at least including a focusing optical element (151) and a distance sensor (153) that includes a light receiver (154), the target field of view being projected on the light receiver (154) through the focusing optical element (151), the distance sensor (153) being configured to set an activation region in a part of the light receiver (154) depending on the scanning with the light and measure a distance to the object with use of a signal from the activation region (5).
Owner:SHARP KK

Radar system and method for operating the same

The invention relates to a radar system. The radar system having at least one radar transmission unit, at least one radar reception unit, a central unit, and a glass fiber for connecting these units,wherein the central unit has a central optical transmission unit to provide an optical radar driver signal, and wherein the at least one radar transmission unit has an optical reception unit and a radar transmitter, wherein the optical reception unit receives the optical radar driver signal and converts the optical radar driver signal into an electrical radar driver signal and provides the electrical radar driver signal for driving the radar transmitter, wherein the at least one radar reception unit includes a radar receiver, a mixer and an optical modulation unit. the mixer is configured to mix the radar echo signals received by the radar receiver and the electric radar driver signals; the optical modulation unit is configured to convert the mixed signals into optical radar driver signalsand couple the optical radar driver signals to at least one glass fiber; and the central unit evaluates the modulated signals. Also disclosed is an associated method.
Owner:VOLKSWAGEN AG +2

Boundary layer PM2.5 detection method

The invention belongs to the technical field of air detection and relates to a boundary layer PM2.5 detection method. The method comprises the steps of boundary layer division, floating ball setting, suspended area detection, data set coupling and floating ball recovery. A floating ball comprises a power mechanism, a collecting assembly, information modules and a controller. Due to the flowing characteristics of the atmosphere of a boundary layer, the distribution of pollutants is in a disordered state, sampling by adopting an optical radar is limited by regions, a high-precision measurement result is difficult to obtain by utilizing a remote sensing satellite, and the accuracy of PM2.5 detection is weakened; therefore, the range of the divided boundary layer is set through the floating ball, the power mechanism in the floating ball is suspended at different heights in the boundary layer and is used for operation of the collection assembly; PM2.5 is detected for multiple times at different heights in the boundary layer by using a bogie and a hollow pipe in a sampling cylinder, and real-time transmission is carried out on the measured data between the information modules, so that the application effect of the boundary layer PM2.5 detection method is improved.
Owner:北方大贤风电科技(北京)有限公司
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