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666 results about "Target angle" patented technology
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Target angle is the relative bearing of the observing station from the vehicle being observed. It may be used to compute point-of-aim for a fire-control problem when vehicle range and speed can be estimated from other information. Target angle may be best explained from the example of a submarine preparing to launch a straight-run (non-homing) torpedo at a moving target ship. Since the torpedo travels relatively slowly, the torpedo course must be set not toward the target, but toward where the target will be when the torpedo reaches it. Target angle is used to estimate target course.
Coaxial motorcycle
InactiveUS7703568B2Stable changeStably compatibly realizeUnicyclesElectric energy managementGyroscopeDifferentiator
Owner:TOYOTA JIDOSHA KK
Topography linked golf aid
A method, apparatus, and program for computing a path, starting velocity, aim angle, and aim points for directing a putted golf ball from a point on a golf course to another point and incorporating such data into easily read charts or electronic media is provided. The invention also provides a means of determining the initial launch conditions and actual path a putted golf ball traveled on given its starting and ending ball positions.
Owner:SWEENEY HLDG
Methods And Systems For Multiple Input Multiple Output Synthetic Aperture Radar Ground Moving Target Indicator
A multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) system. The radar system includes spatially offset transmitting antennas simultaneously transmitting at least two distinguishable waveform signals and receiving antennas receiving incoming waveform returns for each of the distinguishable waveform signals. The radar system also includes a displaced phase center antenna (DPCA) processing unit adapted to perform processing on the incoming waveform returns, and a synthetic aperture radar processing unit adapted to produce a plurality of spatially-coincident SAR-processed signals. The radar system also generates a plurality of clutter-suppressed signals using the spatially-coincident SAR-processed signals. For each of two MIMO transmissions from spatially displaced transmitters, clutter is cancelled simultaneously in at least two spatially displaced receive channels via DPCA processing. This results in at least two spatially displaced but simultaneous clutter cancelled complex SAR images, which are combined in a monopulse processor to enhance target detection and unambiguously determine target angle.
Owner:SRC INC
Coaxial motorcycle
InactiveUS20060231313A1Stably compatibly realizeStable changeSpeed controllerElectric devicesGyroscopeDifferentiator
In a coaxial two-wheeled vehicle, an attitude controller (84) calculates motor torque Tgyr for maintaining a base so that it has a target angle from deviation between base angle command θref serving as attitude command and current base angle θ0 calculated by using a gyro sensor (13) and an acceleration sensor (14). On the other hand, at a position proportional controller (86R), a differentiator (88R) and a velocity proportional controller (89R), there is performed PD control with respect to deviation between rotation position command Prefr of a motor rotor (92R) for right wheel and current rotation position θr of a motor rotor (92R). A current control amplifier (91R) generates motor current on the basis of added value of motor torque which is the control result and estimated load torque T1 calculated by using pressure sensors to drive the motor rotor (92R).
Owner:TOYOTA JIDOSHA KK
Laser link communication-measurement composite system
InactiveCN106911381AIncrease profitReduce weightOptical rangefindersFree-space transmissionTelecommunications linkBeam splitter
The invention discloses a laser link communication-measurement composite system. Through adoption of the laser link communication-measurement composite system, the payload weight, size and power consumption can be lowered. The laser link communication-measurement composite system is implemented by the following technical scheme: an optical antenna transmits a comprehensive optical signal to a rapid reflecting mirror through an eye lens at a transmitting end; reflected light splits a light beam of the comprehensive optical signal into two paths through a beam splitter; one path is transmitted into another beam splitter through the beam splitter to transmit the light beam into a coarse tracking module in order to extract a target position coarse miss distance, and a control voltage is applied to a two-dimensional turntable according to an embedded control algorithm; the other path of comprehensive optical signal is introduced into the field range of a fine tracking module through the beam splitter, and transmitted into the fine tracking module to extract a target position fine miss distance, the overall offset of fine field light spots is controlled, the light spots are introduced into the center of a fine tracking field to obtain target angle information, and the extracted target position fine miss distance is transmitted into a ground / satellite platform comprehensive electronic management and processing module to finish target capture and an aiming function and establish a communication link.
Owner:10TH RES INST OF CETC
Turning film having multiple slopes
Owner:SKC HI TECH & MARKETING CO LTD CO REGISTRATION NO 161511 0225312
Mecca finder
InactiveUS20050288858A1Easy to mergeEliminate needInstruments for road network navigationNavigational calculation instrumentsDisplay deviceDirection information
A portable electronic device, like a cellular telephone for example, includes software for executing a method for presenting directional indicator information to a user on a display. The device receives geographical information about its location, orientation information of its alignment and geographical information about a landmark of interest. The device then calculates a destination angle relative to the orientation information. The device then presents directional information, for example an arrow, to a user. In one exemplary application, Muslims are able to select Mecca as the landmark of interest. The device then uses information about its own location, the orientation of the device and the location of Mecca to present an arrow on the display indicating the proper direction for the Muslim to align themselves for prayer in accordance with the teachings of Islam.
Owner:MOTOROLA INC
Polarizing turning film using total internal reflection
A light redirecting article redirects light toward a target angle. The light redirecting article has an input surface for accepting incident illumination over a range of incident angles and an output surface with a plurality of light redirecting structures, each light redirecting structure having an internal reflection surface oriented at a first angle with respect to the plane of the input surface and an exit surface for emitting an output light at an emitted light angle, wherein the exit surface is oriented at a second angle relative the plane of the input surface. For incident illumination at a principal angle greater than 60 degrees from normal, light is reflected from the internal reflection surface and emitted from the exit surface at an emitted light angle that is within 5 degrees of the target angle.
Owner:SK MICROWORKS SOLUTIONS CO LTD
Non-scanning radar for detecting and tracking targets
InactiveUS7626536B1Direction findersRadio wave reradiation/reflectionScanning beamCoherent processing
Radar for detecting and tracking short range airborne targets using a non-scanning beam to illuminate the entire search space, and processing the return signals from a plurality of spaced apart receive antennas. Target angle in one plane may be determined by coherent processing of the returns from the plurality of receive antennas. Spacing the receive antennas apart in three dimensions allows determining of two angles, such as azimuth and elevation. Processing of the returns may be coherent or noncoherent, or returns may be processed both coherently and noncoherently. Programmability of the processing algorithms and parameters provide flexibility in applications, as well as flexibility based on such things as the target type and its range. Exemplary applications are disclosed.
Owner:MARK RESOURCES
Method for self-correction of array error of multi-input multi-output radar system
ActiveCN101251597AHigh Target Angle Estimation AccuracyEffective correctionRadio wave reradiation/reflectionMulti inputRadar systems
The invention discloses a self-correction method of a multi-input multi-output radar system array error, relating to the radar technical field. The method aims to carry out self correction of the reliant amplitude and phase error of a receiving array azimuth on the premise that the transmitting array of a multi-input multi-output radar system. The implementation process of the method is as follows: firstly, by means of the two corrected transmitting array elements of the multi-input multi-output radar system, orthogonal signals are transmitted; then, the echo signals of the transmitting array elements are separated by means of the orthogonality of transmitting signal through adopting a matched filtering method; an auto correlation matrix and a cross correlation matrix are established by means of the echo signals; a real guide vector and a target angle of an array are estimated by means of a rotary invariant subspace method; finally, by means of the real guide vector and the target angle of the array obtained through estimation, the array azimuth reliant amplitude and phase error can be corrected. The self-correction method can be used in the array error correction field of a multichannel radar system.
Owner:XIAN CETC XIDIAN UNIV RADAR TECH COLLABORATIVE INNOVATION INST CO LTD
Polarizing turning film with multiple operating orientations
This invention relates to a light redirecting article that redirects light toward a target angle, the light redirecting article having an input surface for accepting incident illumination over a first range of incident angles when in a first position and over a second range of incident angles when in a second position: the output surface having a number of light redirecting structures, each having a first exit surface sloping away from normal in one direction as defined by a first base angle β1, wherein the first exit surface redirects illumination with the light redirecting article in the first position, and a second exit surface sloping away from normal, in the opposite direction relative to the first exit surface, wherein the second exit surface redirects illumination with the light redirecting article in the second position and wherein first and second base angles β1 and β2 are unequal.
Owner:ROHM & HAAS DENMARK FINANCE
Control method and system of holder camera device
InactiveCN105676880AFast correctionImprove stabilityControl using feedbackControl systemElectric machinery
The invention discloses a control method and system of a holder camera device. The method and the system belong to the field of holder control methods and devices and are designed for solving such problems that methods and devices in the prior art are poor in stability augmentation effect. The method comprises the following steps: obtaining information of a current angle position of a holder by means of an inertia measurement unit; comparing the current angle position with a preset target angle position of the holder; acquiring information of a motor shaft position in real time to obtain a motor adjustment parameter; and using a motor to drive a camera device according to the motor adjustment parameter to return to an original position corresponding to the preset target angle position of the holder. The system is used to implement the method. The method and the system monitor position changes of the holder in real time, compare the current position with the preset position, obtain the motor adjustment parameter with the help of the current position of a motor, and drive the camera device to correct the position by means of the motor. The correction speed is high, and the stability augmentation effect is good.
Owner:TIANJIN YUANDU TECH CO LTD
Radioactive substance detection method, device and system based on gamma camera
ActiveCN103163548AImprove spatial resolutionImprove signal-to-noise ratioX-ray spectral distribution measurementPhotographic dosimetersRadioactive agentNuclide
The invention provides a radioactive substance detection method, a radioactive substance detection device and a radioactive substance detection system based on a gamma camera. The detection method comprises the following steps of: receiving gamma photons incident from all directions of a target angle plane (alpha, beta) defined by radioactive substances by using the gamma camera; generating gamma photon energy spectrums and projection data of the radioactive substances; and reconstructing the projection data by using a 'maximum likelihood estimation' statistical iterative algorithm to obtain a gamma radiation image with quantitative information. By the method, the spatial resolution and the signal to noise ratio of the gamma radiation image are increased, spaces of the radioactive substances are positioned, the radiation dose is measured, nuclide types of the radioactive substances are identified, and the radioactive activity is measured.
Owner:BEIJING NOVEL MEDICAL EQUIP LTD +1
Solar tracker drive
ActiveUS20150377518A1Increase productionReduce power outputSolar heating energySolar heat collector controllersAngular deviationEngineering
A sun-tracking solar drive can include hardware and / or be operated in accordance with a method in which angular deviations are compensated for operation including during forward tracking and backtracking. For example, the effects of thermal expansion and mechanical slop associated with certain components can be calculated and used for calculation of target angles that can provide for increased power output and improved shading avoidance.
Owner:SUNPOWER CORPORATION
Monopulse radar system based on time modulation antenna array
InactiveCN101587188ACompact structureBeam performance is easily adjustableRadio wave reradiation/reflectionRadar systemsIntermediate frequency
The invention discloses a phased array monopulse radar system based on the time modulation antenna array technology. The basic scheme of the invention comprises an antenna array comprising a plurality of array antenna units, a high-speed radio frequency switch controlled by a complex programmable logic device, a radar receiver, and the like; based on the basic scheme, a power-divider, a mixer, and an intermediate frequency amplifier are reasonably added in the radar receiver, and an amplitude detector, a phase detector and the like are reasonably added at a data processing terminal to form various improved schemes of the invention. With the invention, sum beams and difference beams are easily generated simultaneously, therefore, the transmission of simultaneous frequency diversity signals can be easily realized, and difference beams of higher performance (beam gain, null depth, slope of zero, and the like) can be easily obtained. The invention can be widely used in the phased array monopulse radar systems having application background adding radar reconnaissance difficulty of enemy, or used in radar systems of other target angle measurement and precision angle tracking.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
System, module, and method for illuminating a target on an aircraft windshield
ActiveUS8120548B1Increase awarenessHigh trafficCathode-ray tube indicatorsNavigation instrumentsFlight vehicleLight beam
A present novel and non-trivial system, module, and method for illuminating a target on an aircraft windshield corresponding to a three-dimensional location outside of an aircraft. Navigation data and three-dimensional location data are provided to a control processor; the navigation data may comprise aircraft position, heading, and pitch, roll, and yaw attitudes, and the three-dimensional location data may comprise a runway reference point. After an external target angle and track angle are determined, control data may be generated as a function of pitch, roll and / or yaw attitudes, glide path angle, track angle, and cockpit references originating from a design eye position. Control data may comprise data representative of vertical and / or lateral measurements which position a beam on a windshield target. Then, the control data may be provided to an illumination source for positioning a beam on the windshield target in response to the control data.
Owner:ROCKWELL COLLINS INC
Walking robot and control method thereof
A walking robot to prevent slippage of a swing foot on the ground and a control method thereof includes generating a target angle trajectory for each joint unit of legs, calculating a torque, which tracks the target angle trajectory, for each joint unit, determining whether slippage of a swing foot connected to a swing leg of the two legs occurs, calculating a final torque to be provided to each joint unit of the swing leg based on a velocity sensed from the swing foot if occurrence of slippage of the swing foot is determined, and providing the calculated final torque to each joint unit. By sensing whether slippage of the swing foot occurs when the swing foot touches the ground and restricting a torque to be applied to each joint unit based on the sensed result, stable walking of the robot is realized.
Owner:SAMSUNG ELECTRONICS CO LTD
Method and system for target detection and angle estimation based on a radar signal
A method for target detection and angle estimation in a radar system includes receiving a signal from a radar array; based on the received signal, performing monopulse beamforming to obtain one or more monopulse beams; based on the monopulse beams, determining monopulse ratios; using maximum likelihood estimation based on the determined monopulse ratios to determine a monopulse ratio estimate corresponding to a maximum of a likelihood function; accessing a table correlating monopulse ratio estimates and target angle values and determining from the table an estimated target angle; accessing a complex target amplitude corresponding to the estimated target angle, comparing the complex target amplitude to a threshold; and if, based on the step of comparing, the target amplitude exceeds the threshold, providing an output signal indicative of target detection and the estimated target angle.
Owner:LOCKHEED MARTIN CORP
Target detection method and device, computer device and computer readable storage medium
ActiveCN108121986AFast extractionHigh speedCharacter and pattern recognitionNeural architecturesDetection rateConvolutional neural network
The invention provides a target detection method. The target detection method comprises the following steps: acquiring a training sample set, wherein the training sample set comprises a plurality of target images labeled with target positions and target angle types; training an accelerated regional convolutional neural network model by using the training sample set to obtain a trained acceleratedregional convolutional neural network model; acquiring a to-be-detected image; performing target detection on the to-be-detected image by using the trained accelerated regional convolutional neural network model to obtain a target region of the to-be-detected image and the target angle type of the target region. The invention further provides a target detection device, a computer device and a readable storage medium. Through the target detection method, the target detection device, the computer device and the readable storage medium, rapid target detection with high detection rate can be achieved.
Owner:SHENZHEN INTELLIFUSION TECHNOLOGIES CO LTD
Reduction in hydrocarbon emission via spray pattern control through fuel pressure control in fuel injection systems
InactiveUS7303144B2Electrical controlInternal combustion piston enginesHot startPressure controlled ventilation
Among other aspects shown and described, a fuel supply apparatus that provides multiple fuel spray targeting angles as a function of fuel pressure towards a combustion chamber of an engine to reduce hydrocarbon emission during cold-start or hot-start. A method and fuel system are also shown and described.
Owner:SIEMENS VDO AUTOMOTIVE CORP
System for facilitating control of an aircraft
InactiveUS20110184593A1Low costImprove reliabilityDigital data processing detailsAttitude controlFlight vehicleAirplane
A system for providing flight control instructions to an aircraft is claimed, wherein using aircraft position or velocity data, an outer control loop algorithm determines an aircraft target angle and an inner control loop algorithm outputs commands to cause the aircraft to achieve the target angle. Utilizing the commands outputted from the control loops, aircraft are able to autonomously take-off and land, station hold in a very precise manner, and fly in very close proximity to other objects with little chance of collision.
Owner:SWOPE JOHN M
Around moon satellite dual spindle antenna direct land control method
ActiveCN101204994ARealize open-loop controlSimple calculationAntenna adaptation in movable bodiesSpacecraft guiding apparatusEphemerisSatellite orbit
The invention discloses a method for controlling the pointing to the ground of the coaxial antenna of a lunar satellite. The method includes the following steps: first, according to earth ephemeris information transmitted from the ground to the satellite and a transformation matrix from an equatorial inertia system to a coordinate system of a satellite orbit, the ephemeris of the earth in the coordinate system in the satellite orbit in any moment is calculated ; second, according to the calculated ephemeris, visible earth region of the satellite is calculated and within the visible region, a pointing in the coordinate system of the satellite orbit of vector about the satellite pointing to geometer is calculated; the pointing in the coordinate system of the satellite orbit of vector about the satellite pointing to geometer is calculated in a compensated way to obtain the pointing in the coordinate system of the satellite body of vector about the satellite pointing to geometer; according to the pointing in the coordinate system of the satellite body of vector about the satellite pointing to geometer, an antenna target angle is calculated; a final instruction angle is obtained after an antenna zero deviation is compensated and the final instruction angle is sent to an antenna drive mechanism which can drive the antenna to point to the earth. The invention overcomes the defects of the prior art and adopts a tracking mode of a simple ring-opening program to meet the requirements for pointing accuracy.
Owner:BEIJING INST OF CONTROL ENG
Driving support apparatus of vehicle
InactiveUS20110264329A1Reduce pruningIncrease the curvatureSteering initiationsDigital data processing detailsDriver/operatorSteering angle
A vehicle is provided with: an EPS a VGRS actuator as a rudder angle varying device; and an EPS actuator as a steering torque assisting device. In following a target driving route, a LKA target assist torque TLK is outputted from the EPS actuator on the basis of target lateral acceleration GYTG. On the other hand, in order to suppress the steering of a steering wheel by the assist torque, which is against a driver's will, steered wheels are steered by the VGRS actuator, excessively by a LKA correction target angle θLK. At this time, it does not influence a relation between a steering angle and the rotation angle of a lower steering shaft. Thus, the following for the target driving route is realized without reducing the robustness of the vehicle with respect to the driver's steering.
Owner:TOYOTA JIDOSHA KK
Inverted pendulum type moving body
An inverted pendulum type moving body comprising: a base body; a moving behavior unit movable in all directions on a floor surface; an actuator driving the moving behavior unit; and a control unit controlling the actuator so that at least a tilt angle of the base body equals a predetermined target angle, the control unit also controlling the actuator so that the moving behavior unit moves along a predetermined trajectory.
Owner:HONDA MOTOR CO LTD
Microwave motion detectors utilizing multi-frequency ranging and target angle detection
ActiveUS20100103020A1Optical signallingRadio wave reradiation/reflectionMotion detectorClassical mechanics
A method of detecting a moving target within a predefined protected region with a microwave motion detector, by transmitting microwave frequency signals and receiving the microwave frequency signals reflected by a target. A target distance is then determined from the received microwave frequency signals, and a target angle is determined from the received microwave frequency signals. Then, a target location is determined from the target distance and the target angle, and an alarm condition is set if the target location is within the predefined protected region.
Owner:ADEMCO INC
Mechanical arm space trajectory tracking dynamic compensation method and system
ActiveCN109159151AReduce computational complexityTake up less resourcesProgramme-controlled manipulatorHysteresisDynamic models
The invention provides a mechanical arm space trajectory tracking dynamic compensation method and system. The method comprises the following steps: (S1) a terminal pose error delta of a mechanical armis calculated according to a terminal anticipant pose matrix T1 of the mechanical arm and a terminal present pose matrix T0 of the mechanical arm; (S2) a joint target angle q* is calculated by usinga Jacobian matrix J (q), the pose error delta and a present joint angle q under a present terminal pose of the mechanical arm; (S3) a joint target angle speed FORMULA is calculated according to the Jacobian matrix J (q) under the present terminal pose of the mechanical arm and an anticipant speed v* of the terminal of the mechanical arm; and (4) the joint target angle speed FORMULA and an output quantity of a joint position controller are summed to obtain a joint speed instruction to drive each joint of the mechanical arm to move. The method is low in calculating complexity and few in occupiedresource, has no need to consider complicated dynamics models, and is simple, practical and probe to implementation; and each joint target speed is directly obtained through space speed output by terminal trajectory planning as a feedforward quantity without existing hysteresis, so that the instantaneity is achieved.
Owner:BEIJING INST OF RADIO MEASUREMENT
Controlling method and controlling device for remote monitoring system
InactiveCN103034247AHigh speed accuracyRemote monitoring quicklyClosed circuit television systemsControl using feedbackMonitoring systemAnimal monitoring
The invention provides a controlling method and a controlling device for remote monitoring system. The controlling method of the remote monitoring system includes the obtaining of the attitude of a cradle head and the location information of a monitoring object. The target angle of the cradle head and focal distance of a monitoring camera are calculated according to the attitude and location information. By utilizing the controlling method and controlling device for remote monitoring system, within the monitoring area, according to the location of the monitoring object the remote monitoring system controls the turning of the cradle head quickly, adjusts the focal distance of the monitoring camera , automatically locates the monitoring object and implements tracing. The speed and accuracy of capturing target by the cradle head are higher, the controlling mode is more flexible, the remote monitoring is more quickly, the monitoring level is increased, and a foundation is provided for the intelligent dispatching of ships,operating passenger vehicles, goods yard vehicles and the like transportation means and animal monitoring and management under specific environment.
Owner:ZHEJIANG TENDENCY TECH
Wave beam space domain meter wave radar height measurement method based on compressed sensing
ActiveCN103353596AReduce sidelobeImprove angle measurement accuracyRadio wave reradiation/reflectionSignal-to-noise ratio (imaging)Target signal
The invention discloses a wave beam space domain meter wave radar height measurement method based on compressed sensing and relates to low elevation height measurement under the condition that a signal to noise ratio is low and snapshots are less. A realization process is characterized in that a target signal is extracted from a radar echo and rough measurement of the elevation is performed so that the space domain theta where a target signal elevation is located is obtained; the space domain theta is divided into P parts, wave beam formation is performed in the space domain theta so as to obtain a wave beam transformation matrix B and prewhitening is performed on the wave beam transformation matrix B so as to obtain a whitening wave beam transformation matrix T; receiving data is projected to the whitening wave beam transformation matrix so as to obtain a wave beam domain measurement signal z and an observation matrix phi carries out compression sampling on the z so as to obtain an observation signal y; iterative operation of the whitening wave beam transformation matrix T and the observation signal y is used to obtain a target signal estimation value; a target angle is extracted from the target signal estimation value so as to obtain the target height. By using the method of the invention, sampling points of the target signal and operands are reduced; sidelobes of a signal power spectrum and a space spectrum are effectively reduced; height measurement precision under the low signal to noise ratio is increased; the method can be used in target positioning.
Owner:XIDIAN UNIV
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