37 results about "Laser guidance" patented technology

The invention discloses a laser guidance unmanned aerial vehicle false attack angle feedback stability augmentation control method comprising the following steps that a three-loop autopilot frame with a false attack angle as a feedback signal is set, and the false attack angle is a calculated value of the attack angle; three-loop autopilot control parameters are set, and an autopilot is obtained; and an autopilot is adopted to control the flight state of the laser guidance unmanned aerial vehicle. According to the false attack angle feedback stability augmentation control method for the laser guidance unmanned aerial vehicle, stability augmentation control of the system is achieved through a three-loop autopilot frame with the false attack angle as a feedback signal, higher robustness is obtained, and an expected instruction can still be tracked under interference.

The invention aims to provide a vertical shaft heading machine attitude determination method and system, and belongs to the field of underground engineering monitoring. The method comprises the following steps: establishing a fixed coordinate system and a carrier coordinate system, acquiring propagation time by using a well wall ultrasonic transmitter and a platform receiver, and resolving absolute coordinates of the receiver and absolute attitude of a platform based on spatial spherical intersection; meanwhile, a gyroscope and an accelerometer are used for collecting angular velocity and specific force information, and high-frequency and low-frequency predicted attitudes are calculated. And combining the absolute attitude with the predicted attitude through a fusion algorithm to obtain an optimal attitude angle, and constructing a conversion matrix to process specific force information so as to solve an optimal position deviation. The advantages of high penetrability of ultrasonic waves and continuity of inertial navigation are utilized, the problem that laser guidance is prone to failure in the dust and muddy water environment is solved, and high-precision and anti-interference real-time monitoring of the posture of the vertical shaft heading machine is achieved.

The application discloses a mobile CT and a laser-guided intraoperative mobile CT positioning and navigation method, and the method comprises the following steps: a laser emitting device projects a laser line on the ground, the relative pose of the mobile CT relative to the laser line is calculated, and the distance of the mobile CT and the steering angular velocity of the chassis are controlled based on the relative pose. The application makes full use of the high brightness and high coherence characteristics of the laser line, effectively reduces the dependence on traditional positioning marks, and significantly reduces the complexity and cost of the system. In addition, the application also specially considers the application requirements in complex medical scenes, and ensures the reliability and accuracy in variable environments. Therefore, the application provides a new and efficient solution for the precise positioning and navigation of the intraoperative mobile CT platform.

The invention relates to a quantum cascade laser emitting a polarized TM optical mode with a wavelength between 3 and 15 µm, comprising an amplifying medium and a main waveguide. The latter includes a coupling section in contact with the amplifying medium, comprising a diffraction grating (DFB). The coupling section has a width greater than or equal to a minimum width from which an antisymmetric supermode propagating in a laser guidance structure comprising the amplifying medium and the main waveguide has a confinement factor in an active region of the amplifying medium strictly greater than those of the optical modes capable of being guided by the guidance structure. The main waveguide comprises a core based on atoms from column IVA of the periodic table of elements and a confinement subshell of SiN or a chalcogenide. (See Figure 1A for the abstract.)

A hovering and / or accompanying laser decoy, an attracting and deviating system comprising the decoy, the hovering and / or accompanying laser decoy comprising a laser, a decoy head and a carrier, wherein the laser comprises a connecting part of the laser and the decoy head, the decoy head comprises a laser scattering body, a base and a connecting part with the laser, the connecting part of the laser and the decoy head is arranged to meet the combination of the laser and the decoy head being connected as a whole, and the laser emitted by the laser irradiates into the decoy head and is partially or totally scattered by the laser scattering body therein. The decoy and the attracting and deviating system comprising the decoy are particularly suitable for laser guidance attracting and deviating protection of movable targets.

An air-based counter-countermeasure (CCM) system includes an autonomous or semi-autonomous unmanned aircraft capable of deployment to an area of a countermeasure system having (1) a laser detector to receive and identify an incident laser signal as a target designator signal and (2) one or more countermeasure subsystems operative in response to an output of the laser detector to deploy corresponding countermeasures against a laser target designator. The CCM system further includes a laser-based CCM subsystem carried by the aircraft, the CCM subsystem being configured and operative, during the deployment of the aircraft, to direct a simulated target designator laser signal to the laser detector of the countermeasure system to trigger one or more of the countermeasures and thereby reduce protective ability of the countermeasure system against subsequent laser-guided attack.

The invention relates to an edge banding processing device for cutting an edge band that is or is applied to an edge of a workpiece, comprising: a fastening device configured to attach the edge banding processing device to the edge banding machine in geometric relation to a guide device of an edge banding machine, the guide device being configured to apply the edge band to the workpiece and to guide the workpiece along a guide direction, characterized by a laser processing unit, comprising a laser radiation source configured to generate a laser beam, a laser focusing unit configured to focus and / or defocus the laser beam, and a laser guidance unit configured to direct the laser beam onto a processing area, wherein the laser processing unit is configured to cut the edge band.

This invention discloses a hovering method and system for firefighting drones based on laser guidance and reliable fusion, relating to the field of drone hovering control technology. By deploying laser guidance devices in the high-altitude firefighting operation area, a stable spatial guidance reference is established to guide the drone into the target hovering area and continuously receive coded laser beams. Based on this, laser reception features are extracted and a link reliability factor is calculated to assess the reliability of laser deviation observation information and suppress anomalies. Simultaneously, the laser deviation observations are aligned with the attitude, velocity, and altitude information output by the inertial navigation unit using a time reference and coordinate consistency correction to form a fused data set. Through adaptive reliable fusion and consistency constraints, a hovering error vector for hovering control is constructed, driving the flight control unit to dynamically adjust the drone's hovering position, thereby improving the stability and reliability of drone hovering positioning during high-altitude firefighting operations.

This invention relates to the field of laser guidance technology, addressing the problem that existing technologies cannot effectively identify the interference of spot morphology distortion on centroid calculation from the raw voltage signals of a four-quadrant detector. Specifically, it provides a high-speed dynamic tracking and control method for laser guidance equipment, comprising the following steps: acquiring four voltage signals output by a four-quadrant detector; calculating the signal quality factor and morphology distortion factor based on the four voltage signals; converting the final tracking deviation into a line-of-sight (LOS) deviation; based on the roll angular velocity in the projectile's angular velocity and historical control command disturbances; employing an active disturbance rejection controller to synthesize a total control command based on the LOS deviation, LOS angular velocity, feedforward compensation amount generated based on the LOS angular velocity, and active cancellation compensation amount. This invention calculates the morphological entropy and anisotropy index in real time based on the four-quadrant signals, using the corrected deviation to replace the false centroid, fundamentally eliminating servo desaturation oscillations caused by nonlinear spot offset.

An air-based counter-countermeasure (CCM) system includes an autonomous or semi-autonomous unmanned aircraft capable of deployment to an area of a countermeasure system having (1) a laser detector to receive and identify an incident laser signal as a target designator signal and (2) one or more countermeasure subsystems operative in response to an output of the laser detector to deploy corresponding countermeasures against a laser target designator. The CCM system further includes a laser-based CCM subsystem carried by the aircraft, the CCM subsystem being configured and operative, during the deployment of the aircraft, to direct a simulated target designator laser signal to the laser detector of the countermeasure system to trigger one or more of the countermeasures and thereby reduce protective ability of the countermeasure system against subsequent laser-guided attack.

The invention discloses an automatic welding seam tracking method for a rectangular frame based on multi-source control. Linear lasers emitted by at least two linear laser emitters intersect at a welding seam on a welded piece; the position of the linear laser is recognized through a laser sensor installed at the end of the welding mechanical arm, and a welding head of the welding mechanical arm is guided to move towards the position of the linear laser; a welding head of the welding mechanical arm is guided to move to one end of linear laser through a cylindrical laser transmitter, temperature distribution of the surface of the welded piece is detected through an infrared temperature imager installed on the periphery of the welded piece or integrated on the end portion of the welding mechanical arm, and the welding head of the welding mechanical arm is guided to move from a high-temperature area to a low-temperature area; detection data of the laser sensor and the infrared temperature imager are received through the data processing and control module, a multi-element adjusting mechanism of linear laser guiding, projection spot ring calibration and temperature distribution correction is formed, and the welding device can be adapted to welding of different batches and different products without manual programming.

The present application relates to the technical field of photoelectric countermeasure and semi-physical simulation test, and particularly relates to a kind of intelligent integrated test system of laser guidance equipment anti-interference algorithm, including test task configuration module, scene generation module, algorithm running module, multi-dimension evaluation module and test report generation module;The present application, by converting user test idea into quantitative simulation parameters, then based on digital twin environment real-time solution laser transmission, target reflection and platform motion physical effect, generates dynamic countermeasure scene, can execute full-process data acquisition and resource consumption statistics to algorithm, complete interference identification, tracking accuracy, instruction smoothness and multi-dimension index calculation and comprehensive performance evaluation of resource consumption, and automatically generate test report, realize the effective promotion of algorithm test authenticity, fairness and iteration efficiency under complex countermeasure environment.

This invention discloses a hybrid decoding method for laser seekers, comprising the following core modules: a high-speed main channel, an auxiliary verification channel, and a joint decision unit. The main channel rapidly scans the signal stream using a digital matched filter, triggering a local window upon detecting a candidate frame. The auxiliary channel performs incremental sliding autocorrelation analysis within the window, efficiently verifying the signal structure integrity using an incremental recursive formula. The joint decision unit determines the valid signal based on a dual-dimensional threshold of the matched peak value and the autocorrelation peak value. This invention significantly improves decoding robustness under non-ideal channel conditions, while ensuring real-time performance through local window constraints and incremental calculations, making it suitable for high-interference scenarios such as laser guidance.

This invention discloses a hovering method and system for firefighting drones based on laser guidance and reliable fusion, relating to the field of drone hovering control technology. By deploying laser guidance devices in the high-altitude firefighting operation area, a stable spatial guidance reference is established to guide the drone into the target hovering area and continuously receive coded laser beams. Based on this, laser reception features are extracted and a link reliability factor is calculated to assess the reliability of laser deviation observation information and suppress anomalies. Simultaneously, the laser deviation observations are aligned with the attitude, velocity, and altitude information output by the inertial navigation unit using a time reference and coordinate consistency correction to form a fused data set. Through adaptive reliable fusion and consistency constraints, a hovering error vector for hovering control is constructed, driving the flight control unit to dynamically adjust the drone's hovering position, thereby improving the stability and reliability of drone hovering positioning during high-altitude firefighting operations.

The invention discloses a label printing device based on laser guiding and positioning, and relates to the field of label printing, the label printing device comprises a conveying belt, and the conveying belt comprises a feeding end and a discharging end which are oppositely arranged; the discharging mechanism is arranged above the feeding end, and the discharging mechanism is used for feeding labels to the conveying belt; the positioning printing mechanism is arranged between the feeding end and the discharging end, the positioning printing mechanism is used for printing labels, and the positioning printing mechanism comprises a first industrial camera, a second driving motor and a laser module; the controller is electrically connected with the positioning printing mechanism; wherein the laser module comprises a laser positioning module and a laser printing module, and the first industrial camera is used for roughly positioning a target label; based on the obtained coarse positioning information, the controller controls the laser positioning module to perform fine positioning on the target label; and when it is judged that the target label moves to the position below the laser printing module, the controller controls the laser printing module to print the target label. The label printing device has the advantage of being accurate in label printing position.

The application discloses a kind of laser guidance radar's anti high frequency interference method and device, method includes: receiving multiple echo signals and according to multiple echo signals real-time setting multiple self-adapting overlapping wave gates;Echo signal is the signal formed after reflection for the pulsed signal that laser target indicator emits in random frequency mode;According to multiple wave gates, obtain multiple candidate pulse echo combinations from multiple echo signals;According to each echo signal and the target distance of target to be hit, with the motion attribute of seeker for hitting target to be hit, obtain target pulse echo combination from multiple candidate pulse echo combinations;According to target pulse echo combination, determine the position of target to be hit.The application can improve the anti high frequency interference ability of laser guidance system, realize accurate laser guidance, and can be widely applied in laser guidance field.

The application provides a computer vision-based intelligent tennis serving training method and system, which comprises the following steps: calibrating laser guiding parameters of a guiding device according to key physiological data of a trainer; decoupling a tennis serving action into multiple sub-technical action training items, and displaying each sub-technical action training item for the trainer to select; extracting target control parameters matched with the sub-technical action training item selected by the trainer from the laser guiding parameters, and controlling the guiding device to project laser guidance according to the target control parameters to guide the trainer to perform the corresponding sub-technical action according to the guidance; acquiring image sequence data of the trainer when performing the sub-technical action, constructing a human motion dynamic model according to the image sequence data, and determining key action parameters of the trainer; and after the trainer performs the sub-technical action, generating a motion video superimposed and rendered with the human motion dynamic model and the key action parameters for analysis result display.

The application discloses a kind of test devices of laser guidance multi-field coupling loading under complex environment, including environmental test chamber and optical support installed in environmental test chamber, the slide rail is equipped in optical environment test chamber;Rotary table is equipped on optical support, the helical laser beam rotating around the axis of seeker is sent to the length direction of slide rail by laser rotary table;Wind force simulation mechanism, water mist simulation mechanism, smoke simulation mechanism, illumination simulation mechanism and haze simulation mechanism are equipped in optical environment test chamber, the seeker can be slid forward and backward on the slide rail in the present application, the complex environment in actual seeker working process is simulated by wind force simulation mechanism, water mist simulation mechanism, smoke simulation mechanism, illumination simulation mechanism and haze simulation mechanism, and loading test is facilitated in complex environment for seeker.

The invention discloses a verticality measuring device based on laser guiding positioning, and relates to the field of safety monitoring of mechanical equipment, in particular to the verticality measuring device based on laser guiding positioning, which is characterized in that a fixed base can adapt to fixation of surfaces of different materials through a modularized split design, and the verticality measuring device is convenient to use. A gravity self-adaptive universal joint, a laser transmitter and high-precision scales are combined, a measuring device of an A-type universal joint structure and a measuring device of a B-type universal joint structure are provided through modular design, the A-type universal joint is vertically downward after being adsorbed on the top through a base, and the B-type universal joint is vertically downward after being vertically adsorbed through the base. The perpendicularity of the to-be-detected equipment is rapidly and accurately detected by using core components such as gravity self-adaptive laser positioning and a multifunctional measuring plate.

The application aims to provide a shaft heading machine posture determination method and system, and belongs to the underground engineering monitoring field. The method establishes a fixed coordinate system and a carrier coordinate system, uses a shaft wall ultrasonic transmitter and a platform receiver to obtain a propagation time, and calculates an absolute coordinate of the receiver and an absolute posture of the platform based on a spatial spherical intersection. Meanwhile, the gyro and accelerometer are used to collect angular velocity and specific force information, and high-frequency and low-frequency predicted postures are calculated. The absolute posture and the predicted posture are combined to obtain an optimal posture angle through a fusion algorithm, and a conversion matrix is constructed to process the specific force information to calculate the optimal position deviation. The application uses the advantages of strong ultrasonic penetration and continuous inertial navigation to solve the problem of laser guidance failure in a dusty and muddy environment, and realizes high-precision, anti-interference and real-time monitoring of the shaft heading machine posture.

The utility model discloses a device for laser direction, including stand, install two sliding blocks on the stand, install the direction device on the sliding block, the direction device includes mounting block, mirror frame, movable plate and adjusting mechanism, install mounting block on the sliding block, adjusting mechanism connects mounting block and movable plate, install mirror frame on movable plate, solved the problem that the current direction device function is relatively single, not quite can satisfy daily use demand.

Systems and methods for scattering or deviating a laser beam are provided. A system utilizing a lenticular sheet and a laser source projecting a laser beam onto the lenticular sheet produces shapes such as laser cones. Minor adjustments of the laser source with respect to the lenticular sheet may vary the size and shape of the laser cone that provides for improved Light Detection and Ranging (LIDAR) systems. A diffraction grating added in the path of the laser beam causes a laser pattern of a matrix of lines to be produced which also provides for improved. Interference between multiple lenticular sheets may be used to deviate a laser beam to protect military assets from laser-guided projectiles and / or laser acquisition.

The invention provides a laser guided weapon use method and system, and the method comprises the steps: carrying out the polarization characteristic analysis of ambient light of a preset target region through a ground control system, and determining an initial polarization filtering direction; generating a dynamic polarization coding sequence based on a preset key and a system clock, and constructing a synchronization instruction packet containing the sequence, a starting timestamp and a repetition period; modulating the polarization state of the laser according to the sequence time sequence through a variable polarization laser irradiator, and irradiating a target area; the synchronization instruction packet is sent to the guided weapon; a seeker of the guided weapon receives the composite optical signal, and the composite optical signal is converted into an original electric signal flow through a photosensitive area array; and the dynamic polarization decoder generates a local de-coding head sequence according to the synchronization instruction packet, and performs time window and polarization state dual matching detection on the signal stream. According to the method, through dynamic polarization coding, time synchronization and dual authentication decoding, the guidance robustness and the anti-deception capability under the strong clutter and active interference environment are improved.

This invention belongs to the field of deep-sea exploration technology and relates to a laser guidance method and system for deep-sea equipment. The method includes: remotely locating an underwater vehicle or docking device based on acoustic signals emitted by an ultra-short baseline positioning beacon on the landing equipment, enabling the underwater vehicle or docking device to enter a preliminary target area; activating an active optical guidance module on the landing equipment to emit visible light signals carrying preset spatial structure and encoding information; searching for and capturing visible light signals within the preliminary target area using an image acquisition device on the underwater vehicle or docking device; performing real-time image decoding to obtain the identification code and geometric features of the projected image of the landing equipment; and based on this and the acquired imaging parameters, obtaining the definite three-dimensional spatial position of the underwater vehicle relative to the landing equipment. This invention solves the problem of 1 / 100 directional drift error in the deep sea and achieves high-precision three-dimensional positioning of the base equipment.

This application provides an interactive projection guidance control method, an interactive robotic arm, and a humanoid robot. The method includes: responding to user voice commands to generate content to be displayed and a corresponding explanation script; controlling a four-wheeled intelligent chassis to move to the target display area, identifying the target projection plane, and solving for the desired pose of the interactive robotic arm's end effector; controlling the interactive robotic arm to move the projection module to the desired pose, and projecting the content to be displayed onto the target projection plane after performing geometric correction; according to the explanation script, controlling the laser guidance module to dynamically indicate or track the target area in the content to be displayed, and controlling the lighting module to perform supplementary lighting according to the ambient illuminance, task mode, and user position; and controlling the humanoid robot to perform standby, following, or automatic recharging after the task is completed. This application realizes an integrated closed-loop service for autonomous movement, precise projection, laser explanation, intelligent supplementary lighting, and safe recharging of the robot in a dynamic office environment.

The application discloses a kind of laser seeker adaptive laser pulse detection methods, the module including ADC sampling module, noise modeling module, matched filter module, data preprocessing module, dynamic threshold detection module and pulse positioning module;The application acquires noise sample under the condition of no laser irradiation, calculates noise mean and variance, establishes environmental noise adaptive model;Then the baseline correction is carried out to input signal, and the signal envelope is extracted by matched filter based on raised cosine function construction;Based on noise model, set dynamic detection threshold, only search effective pulse peak value in the set sampling point.The application has low computational complexity, does not need multiple frame average, and can be run in real time on embedded platform such as Zynq.Compared with traditional FFT method, the application improves the success rate under low SNR condition, reduces processing time, and is suitable for laser ranging, laser guidance and other high real-time requirement application scenarios.

The present application belongs to the field of airborne laser homing composite space coding guidance, and particularly relates to an airborne remote telecontrol guidance device, which comprises a guidance system and a receiving system, the guidance system comprising a television observation assembly, a laser guidance assembly, a wireless display control assembly, a stable platform and a guidance unmanned aerial vehicle; the receiving system comprising an optical assembly, a detector, a signal processing module, a transmission display assembly and a receiving unmanned aerial vehicle; the wireless display control assembly is operated to control the laser guidance assembly to emit an information field, the signal processing module adjusts and controls the position of the receiving unmanned aerial vehicle after receiving the instruction of the information field, so that the receiving unmanned aerial vehicle attacks the target according to the instruction. The present application can realize the accurate attack on air-to-ground targets and air-to-air targets by using the laser homing guidance mode.

The invention discloses a laser-guided ocean light environment prohibited area determination method and device, equipment, a medium and a product, and relates to the field of laser guidance, and the method comprises the steps: obtaining the position of a target point, the flight height of an aerial carrier, the initial delivery speed, the horizontal distance between the aerial carrier and a target, and the course of the aerial carrier; according to the target point position, the aerial carrier flight height, the initial launching speed, the horizontal distance between the aerial carrier and the target and the aerial carrier course, the flight path of the laser guided bomb is determined; for each point location in the flight path, determining a point location state according to a critical model of entering the seeker field of view by direct sunlight and a critical model of entering the seeker field of view by solar reflection; the point position state is that the point position is influenced by the ocean illumination condition or is not influenced by the ocean illumination condition; and changing the course of the aerial carrier, and determining the prohibited area of the marine light environment according to the point position state. According to the method, the guidance accuracy is improved by defining the prohibited area of the marine light environment.

The utility model discloses a device for detecting the tracking performance of laser guidance seeker, including horizontal mounting panel, laser emission swing subassembly, drive assembly, seeker fixing piece and control box. Through the seeker fixing piece, the laser guidance seeker to be measured is fixed, then the drive assembly drives the laser emission swing subassembly to emit laser in a certain angle range and continuously aims at the spherical center position of the head of the laser guidance seeker to be measured, and then the control box receives the output instruction of the laser guidance seeker to be measured in real time and judges whether the tracking performance of the laser guidance seeker to be measured is qualified according to the received control instruction. The device can automatically test the laser guidance seeker to be measured, and compared with artificial test, the laser beam does not deviate, the detection result is accurate and fast.