296results about "Theodolites" patented technology

The invention discloses an intelligent photoelectric theodolite aerial target positioning and tracking system, which relates to the technical field of photoelectric detection, and comprises a multi-mode photoelectric sensor module integrating visible light, infrared thermal imaging, a laser radar and a polarized light sensor and supporting spectrum adaptive switching; the dynamic noise suppression processing module is used for eliminating environmental interference based on a time-space domain hybrid filtering algorithm; the multi-target tracking control module adopts a time-sharing partition scanning strategy and a graph neural network data association algorithm; the anti-interference servo driving module is used for realizing stable tracking under strong disturbance through inertial navigation-visual fusion compensation; and the edge computing platform is used for deploying a lightweight deep learning model to complete target recognition and trajectory prediction. According to the invention, through interdisciplinary collaboration of quantum dot materials, graph neural networks and physical equation constraints, the bottleneck of a single technology is broken through; and through closed-loop optimization of dynamic anti-interference and edge intelligence, full-link enhancement of'perception-decision-execution 'is realized.

A total station includes a telescope and a tracking system for aligning an axis of the total station with a target. The tracking system includes a first emitter that emits first light toward the target and a first sensor that receives the first light reflected off the target. The first emitter and first sensor are horizontally offset from a lens center of the telescope. The tracking system also includes a second emitter that emits second light toward the target and a second sensor that receives the second light reflected off the target. The second emitter and second sensor are vertically offset from a lens center of the telescope. Corrective rotations are computed based on the received first light and the received second light.

The present application provides a measurement method and system, a device, and a storage medium. The method is implemented by using the measurement system. The measurement system comprises a laser ranging module, an image measurement module, and a navigation module. The method comprises the following steps: acquiring measurement data of a point to be measured, the measurement data comprising first measurement data acquired from the laser ranging module, second measurement data acquired from the image measurement module, and third measurement data acquired from the navigation module; on the basis of the measurement data of said point, calculating at least one position measurement result of said point; and on the basis of the at least one position measurement result, calculating a final position measurement result of said point by using a preset measurement fusion algorithm. In the present application, the measurement data of the laser ranging module, the image measurement module, and the navigation module are effectively fused, so that the accuracy of measurement of the spatial position of a point to be measured is improved.

The invention is applicable to the technical field of target range target measurement, and provides a post-event target range multi-target trajectory measurement method and system, a storage medium and a processor. Firstly, combined intersection calculation of targets at all moments is completed through azimuth pitch angles of the targets relative to multiple observation stations, three-dimensional position coordinates of the multiple targets at all moments are obtained, dimension raising operation of data to be separated is achieved, and due to the fact that one-dimensional data is additionally introduced, intersection of the target data is greatly reduced, and the trajectory separation difficulty is lowered; meanwhile, an unsupervised learning method, namely a clustering algorithm, is introduced, the algorithm can group the data without any guidance, and the efficiency is extremely high. The afterward target range multi-target trajectory measurement system adopting the method also has the above effects.

The invention provides a deep-sea subsurface buoy three-point positioning method. The deep-sea subsurface buoy three-point positioning method comprises the steps that the longitude and latitude of a subsurface buoy weight entering water, the seawater depth and the distance between a deep-sea releaser and the subsurface buoy weight are obtained when a deep-sea subsurface buoy is laid; within a set distance from the water entry point of the subsurface buoy heavy block, three position points which are not in the same straight line are selected, and latitude and longitude coordinates of the three position points are recorded; actually measuring the distances from the three position points to the deep sea releaser; and obtaining latitude and longitude coordinate positions of the deep sea subsurface buoy based on a three-point positioning method of solid geometry. The method has the advantages that the calculation method is simple, the operability is high, the actual laying position of the deep sea subsurface buoy can be corrected, and the estimation precision of the laying position of the deep sea subsurface buoy is improved. And powerful support is provided for subsequent acoustic experiment data processing and subsurface buoy recovery and salvage.

The invention discloses a relation calibration method and device of a two-axis turntable and a collimator, a medium and a product, and relates to the technical field of data processing. The method comprises the following steps: when the theodolite and the collimator are in a light focusing condition, acquiring first angle data of rotation of the two-axis turntable and second angle data of rotation of the theodolite; constructing a coordinate system conversion model according to the first angle data and the second angle data; based on the first angle data, the second angle data and the coordinate system conversion model, determining a plurality of conversion matrixes among the two-axis turntable coordinate system, the theodolite coordinate system of the theodolite and the collimator coordinate system; and determining the conversion relation between the two-axis turntable and the collimator according to the plurality of conversion matrixes. According to the invention, the two-axis turntable in the ground detection simulation system can be accurately aligned and calibrated with the collimator, reliable guarantee is provided for research, development and testing of the laser communication terminal, and the accuracy and reliability of satellite communication simulation are improved.

The invention relates to the field of optical system calibration, in particular to an optical camera position and attitude calibration method. According to the method, a least square method is adopted, the flatness h of an imaging assembly installation reference surface and the perpendicularity p between the imaging assembly installation reference surface and an optical lens installation reference surface are subjected to least square fitting, the correction misalignment amount delta is obtained, reference is provided for follow-up coaxial adjustment of an optical lens of an optical camera and an imaging assembly, and the calibration precision is improved. By adopting the beam splitter prism assembly, auto-collimation images of the beam splitter prism assembly can be simultaneously incident to different directions of the accurate measurement mirror assembly by only using one laser theodolite; compared with a traditional measurement method adopting a plurality of laser theodolites, the method has the advantages that the rotation error caused by mutual aiming of the plurality of laser theodolites is overcome, and the calibration precision and efficiency are improved.

A system for surveying includes, a base station, for being positioned with respect to an environment, and an augmented-reality device. The augmented-reality device, such as a head-mounted display, has one or more cameras. An image of the base station is acquired by at least of the one or more cameras. An offset from the augmented-reality device to the base station is calculated based on the image. A position of the augmented-reality device with respect to the environment is calculated based on the offset and the base station positioned with respect to the environment. A virtual object in relation to the environment can then be presented to a user, using the augmented-reality device.

The invention belongs to an optical system, and provides a moving target measurement optical system and a measurement method, aiming at the technical problems that when the track of an aerial target is measured at present, only intersection measurement can be carried out, and distance measurement cannot be carried out by a single theodolite, so that measurement is inconvenient and calculation is complex. Comprising a main optical system, a laser ranging receiving correction lens group, a visible light collimating lens group, a visible light imaging lens group and a medium-wave infrared projection lens group. A laser ranging receiving light path, visible light measurement and infrared measurement common aperture structural form is adopted, single-station simultaneous angle measurement, ranging and temperature distribution measurement are achieved, and then single-station moving target track measurement is completed. Visible light imaging, medium-wave infrared capture measurement and laser ranging receiving share a primary mirror and a secondary mirror of the Cassegrain mirror group, high-resolution imaging, high-precision angle measurement and laser ranging are realized without parallax and optical axis sharing, and the requirements of long-focus high-definition imaging, long-distance high-precision angle measurement and long-distance ranging can be met at the same time.

An automatic stationing functionality of a geodetic survey instrument. The survey instrument comprising a targeting unit configured to provide a targeting data measurement, an inertial measurement unit (IMU), an imaging sensor unit configured for providing the functionalities of a visual positioning system (VPS), a communication interface configured to receive a design data comprising position information of reference markers in the environment, and a computing unit. The automatic stationing functionality being configured for calculating a coarse pose of the instrument based on the IU and / or the VPS pose data, selecting a plurality of reference markers to be targeted based on the coarse pose and the design data, and determining a fine pose of the instrument based on the targeting data measurement of the plurality reference markers.

The invention provides a Mercator projection method and device for controlling engineering projection deformation based on an axis, and relates to the technical field of engineering measurement. The method comprises the following steps: determining a latitude range of an engineering measurement area and measurement points of an engineering preset axis, wherein the measurement points comprise a south end point and a north end point of the latitude range; estimating Mercator projection length deformation of each measuring point of the project preset axis based on the latitude of each measuring point of the project preset axis; determining a target latitude with the minimum Mercator projection total length deformation of the project preset axis in the latitude range as a standard latitude; and based on the latitude of the standard latitude, carrying out Mercator projection on the project preset axis in the project measurement area. Based on the technical scheme, the projection parameters meeting the engineering projection deformation tolerance requirement can be quickly obtained for projection.

Disclosed are a method for determining an error component of a photoelectric theodolite and a method for compensating an error component of a photoelectric theodolite. A celestial region is divided into 60 sub-regions by star selection software, a star is selected from each sub-region to serve as a reference star, the theodolite is controlled to sequentially point at the reference stars, an azimuth deviation and an elevation deviation for each reference star are calculated, an axis systematic error pointing model, an azimuth error equation and an elevation error equation for the photoelectric theodolite are established, a least squares estimated value of an azimuth error component and a least squares estimated value of an elevation error component are calculated by a least squares method, a reference star with a large fitting residual is excluded, and an iterative calculation is performed repeatedly.

The invention discloses an unmanned aerial vehicle target tracking method and system, and relates to the technical field of radio monitoring and unmanned aerial vehicle control, and the unmanned aerial vehicle target tracking method and system can analyze the radio signal of an unmanned aerial vehicle, combine the three-dimensional map data, unify the coordinate reference, and eliminate the height reference difference. And a three-dimensional space model is constructed to accurately calculate the spatial position relationship between the unmanned aerial vehicle and the control equipment, so that the positioning precision and the tracking effect are improved, and the technical problem of large positioning error in a complex electromagnetic environment and terrain in a traditional method is solved.

The invention provides a monitoring method and device and a readable storage medium. The method comprises the following steps: acquiring current flight data of an unmanned aerial vehicle; inputting the current flight data into a global AI model, performing feature extraction on the current flight data by using a global feature mapping function in the global AI model, and generating corresponding current observation trajectory features; calculating a trajectory difference degree between the current observation trajectory feature and a historical normal trajectory feature; and in response to the situation that the trajectory difference degree is greater than a preset abnormal threshold value, judging that the unmanned aerial vehicle has black flight. According to the method, the device and the readable storage medium, the problems that in an existing monitoring technology for black flight of the unmanned aerial vehicle, the precision of a radar monitoring technology is limited in a short-distance low-height scene, the monitoring error of a visual identification technology facing a high-speed unmanned aerial vehicle or complex weather is large, and comprehensive monitoring is difficult to achieve in an ADS-B technology due to the unmanned aerial vehicle configuration problem can be solved.

The invention relates to the technical field of data processing, and discloses a 5G-A unmanned aerial vehicle track monitoring method and system for power grid inspection. The method comprises the following steps: acquiring 5G-A base station sensing data and cleaning to obtain a space coordinate sequence; converting the geographic coordinates into relative position coordinates, and performing dynamic slicing and standardization processing; extracting time sequence features through an LSTM model to determine a target category, and calculating a space deviation distance between a sensing track and a reported track; and according to the deviation distance and the matching result, determining a security situation and generating an alarm. According to the invention, accurate identification and safe controllable supervision of the low-altitude target in the power grid inspection area are realized.

According to the pipe jacking machine two-way jacking butt joint and disassembly method suitable for the hard rock stratum, pipe jacking machines are arranged in working wells at the two ends of a hard rock stratum construction path correspondingly, and a pipe jacking machine head I of one pipe jacking machine and a pipe jacking machine head II of the other pipe jacking machine are brought into a steel jacking pipe in the opposite tunneling process; comprising the following steps that S1, in the opposite tunneling process of a pipe jacking machine head I and a pipe jacking machine head II, the deviation of the jacking axes of the pipe jacking machine head I and the pipe jacking machine head II is measured and corrected in real time; s2, when the pipe jacking machine head I and the pipe jacking machine head II are close to each other and the hard rock stratum on the construction path is not completely communicated, the two pipe jacking machines are shut down for the first time, and a cutterhead assembly and an internal structure of the pipe jacking machine head II are disassembled; according to the method, by means of the geological characteristics of the hard rock stratum, accurate butt joint and penetration of the tunnels on the two sides can be smoothly achieved, the stability of the surrounding rock stratum is not affected, meanwhile, the pipe jacking machine can be safely and efficiently dismantled, and the steel jacking pipes on the two sides are well connected.

The invention relates to the technical field of image processing, and particularly discloses a flight target attitude measurement method based on a simulation imaging matching algorithm, which is used for solving the problems of attitude angle calculation error and measurement precision reduction caused by shock wave effect and aerodynamic disturbance in the attitude measurement process of a supersonic flight target. According to the method, the Mach number is calculated through the flight speed and the local sound velocity, a corresponding simulation image template is generated and selected, a preliminary attitude angle is solved through a simulation image matching algorithm, then the preliminary attitude angle is corrected through a Mach number correction function and an attitude dynamic adjustment item, and finally the final accurate attitude angle is obtained through Kalman filtering dynamic correction. According to the method, through the Mach number correction function and the attitude angle dynamic correction term, the precision and the real-time performance of attitude angle measurement under the supersonic flight condition are remarkably improved, and the stability and the calculation efficiency of attitude angle measurement are ensured especially under the conditions of the shock wave effect and the rapid attitude change.

The present disclosure provides a control method and device for coupling elevation and length deformation of Mercator projection, and relates to the technical field of engineering surveying. The method comprises: estimating a first rate of change of projection length deformation caused by Mercator projection in the engineering surveying area according to the latitude distribution of the engineering surveying area; estimating a second rate of change of projection length deformation caused by the height difference according to the height difference distribution of the engineering surveying area; determining the latitude that makes the absolute value of the first rate of change and the absolute value of the second rate of change the same as the standard latitude for Mercator projection in the engineering surveying area; and performing Mercator projection in the engineering surveying area based on the latitude of the standard latitude. Based on this technical solution, the projection deformation of large height difference engineering can be reduced.

The invention relates to the field of image processing, and discloses a method for extracting the miss distance of a projectile drop point of a staring type visible light photoelectric theodolite. According to the implementation scheme, the method comprises the following steps: 1, determining a staring view field, acquiring a visible light image in real time by a photoelectric theodolite, and caching a background frame; 2, differentiating the current frame image obtained in real time and the background frame to obtain a differential image; 3, performing differential image target extraction based on multi-feature joint filtering on the differential image; 4, calculating coordinates of the center of mass and the lowest point of the target extracted in the current frame; and 5, judging whether the target centroid ordinate of the frame is the minimum value or not, and outputting the target lowest point miss distance when the target centroid ordinate is the minimum value. The target detection method based on multi-feature combined filtering is adopted, interference of strong light, noisy points, large-area background cloud and false targets is effectively removed, and the detection capacity of target drop points of visible light in a target range is improved.

The embodiment of the invention provides a motor vehicle auxiliary parking method and device and a computer readable storage medium, and the method comprises the steps: fusing the positioning data of a combined navigation positioning system and odometer information to form latitude and longitude coordinates; converting the latitude and longitude coordinates into vehicle poses, and determining initial vehicle poses and initial latitude and longitude coordinates; a three-dimensional scene map and a two-dimensional scene map are constructed in combination with image information and vehicle poses in the driving process of the motor vehicle; selecting a target parking space; based on the latitude and longitude coordinates of the current position and the initial latitude and longitude coordinates, a coarse positioning pose is obtained through calculation, matching search within a preset range is carried out in a two-dimensional scene map with the coarse positioning pose as the center to correct the coarse positioning pose, and three-dimensional matching is carried out according to the corrected coarse positioning pose to obtain a fine positioning pose; calculating and generating a target parking path based on the two-dimensional scene map; and controlling the motor vehicle to drive into the target parking space based on the parking path and the fine positioning pose. According to the embodiment, the positioning precision can be effectively improved.

The utility model relates to an adjusting structure of a laser and a laser theodolite. The adjusting structure of the laser comprises a telescope tube and a laser module, the telescope barrel is sequentially provided with an eyepiece cavity, a prism cavity and an objective lens cavity which are communicated in the axial direction, and the inner wall of the prism cavity is provided with a mounting channel communicated with the outside; the laser module comprises a laser and an elastic piece, the laser is installed in the installation channel, can move in the direction close to and away from the prism cavity and is used for emitting laser towards the prism cavity, and the elastic piece is connected to the laser and the inner wall of the installation channel. According to the scheme, the elastic piece is arranged between the laser and the inner wall of the mounting channel, so that when the laser is subjected to external pressure, floating supporting force far away from the prism cavity can be generated based on the elastic force effect of the elastic piece, debugging personnel only need to press the laser towards the prism cavity until the laser reaches the same focus position, frequent disassembly and assembly are not needed, and the debugging efficiency is improved. The debugging efficiency is improved, the working intensity of debugging personnel is reduced, the structure is simple, and the cost is saved.

A range finding device 100 is operable to determine an estimated range R and bearing B to a target object location T11. Based on the estimated range R and expected range error ΔR, near and far offsets Δn, Δf are calculated. Based on the estimated bearing B and expected bearing error ΔB, left side and right side offsets Δl, Δr are calculated. Together the offsets define a target object location area T12. The estimated range is determined by varying the size of scale markers 202, 203 corresponding to the estimated size of the particular type of target object at the estimated range R, until the scale markers 202, 203 match the apparent size of the target object within the output image, the apparent size thereby providing an estimate of range R.

The invention discloses a coaxial refraction and reflection type infrared low-temperature optical system and an adjustment test method thereof. The optical system is composed of a main optical system, a main system supporting frame, a rear light path infrared lens group, an infrared lens group lens seat and a rear light path mounting bottom plate. In order to improve the assembling and adjusting precision and simplify the assembling and adjusting freedom degree, precision assembling and adjusting equipment such as an interferometer, a laser tracker, a centering instrument and a theodolite is adopted, a main optical system and a rear optical path infrared lens group serve as independent units to be assembled and adjusted, and then precision integration testing is conducted. In order to reduce the test period and cost of the low-temperature optical system, a test compensation lens is inserted into a low-temperature optical path, so that the low-temperature optical system can perform imaging test and image quality evaluation in a normal-temperature and normal-pressure environment. The method has the advantages of being simple in principle, high in precision, short in period and low in cost, and is suitable for adjustment testing of the coaxial refraction and reflection type infrared low-temperature optical system.

A method performed by an apparatus associated with a moving object is introduced. The method may comprise obtaining data about a velocity of the moving object, a global positioning system (GPS) altitude, a GPS latitude, a GPS longitude, and a gradient associated with the moving object. The method may further comprise determining, based on integrating the data, an integrated altitude value, determining, based on the integrated altitude value, an observed inclination offset value, determining, based on the observed inclination offset value, inclination offset estimation data, automatically adjusting, based on the inclination offset estimation data, an inclination offset value of an inclinometer associated with the moving object, and outputting a signal indicating the adjusted inclination offset value.

The invention discloses a steel pipe pile support perpendicularity control device and a construction method, and belongs to the technical field of steel pipe pile construction. The device comprises a double-theodolite monitoring assembly, a hydraulic deviation correction execution assembly, a real-time data transmission assembly and a central control unit, all the assemblies work cooperatively to achieve whole-course accurate control over the steel pipe column vibration pile sinking process, and the problems that in the prior art, perpendicularity control precision is low, and adjustment lags behind are solved. The perpendicularity of the steel pipe column is monitored through the double theodolites in a 90-degree crossed mode, dynamic adjustment is achieved in combination with the hydraulic deviation correction frame, the steel pipe column perpendicularity deviation is controlled through the processes of datum positioning, graded pile sinking monitoring, real-time deviation correction and final hammer acceptance inspection, and the method is suitable for the scene of bridge cast-in-place related to high pier column support construction. And the construction safety and the engineering quality are effectively improved.

The invention discloses an online detection method for the misalignment angle of a platform-built-in star sensor. First, an online detection device for the misalignment angle of a platform-built-in star sensor is built. Then, a conversion matrix between a hexahedron coordinate system and a theodolite coordinate system is calculated; a conversion matrix between the theodolite coordinate system and a star sensor target surface measurement coordinate system is calculated; a conversion matrix between the hexahedron coordinate system and a star sensor target surface measurement coordinate system is determined; and the star sensor misalignment angle is determined according to the conversion matrix between the hexahedron coordinate system and the star sensor target surface measurement coordinate system. The method of the invention does not need to disassemble the star sensor installed on the platform body, effectively shortens the time for retesting the long-term stability of the misalignment angle of the star sensor, improves the detection efficiency, and is a practical method for measuring the misalignment angle of a built-in star sensor.

This application applies to the field of target measurement technology at firing ranges, providing a method, system, storage medium, and processor for post-mission multi-target trajectory measurement at firing ranges. This method departs from the traditional "separate first, then rendezvous" approach, instead employing a "rendezvous first, then separate" process. First, it utilizes the azimuth and elevation angles of the target relative to multiple stations to perform combined rendezvous calculations for targets at various times, obtaining the three-dimensional position coordinates of multiple targets at each time point. This achieves dimensionality enhancement of the data to be separated. By introducing additional one-dimensional data, the overlap between target data is significantly reduced, lowering the difficulty of trajectory separation. Simultaneously, an unsupervised learning method—a clustering algorithm—is introduced. This algorithm can group data without any guidance and is highly efficient. The post-mission multi-target trajectory measurement system at firing ranges using this method also achieves the aforementioned effects.

The utility model relates to the technical field of theodolites, in particular to a theodolite for lightning protection detection. The theodolite comprises three supporting frames, the upper surfaces of the three supporting frames are provided with the same theodolite body, the lower surfaces of the supporting frames are provided with fixing structures, the fixing structures comprise connecting frames, the connecting frames are fixedly connected with the supporting frames, sliding grooves are formed in the two sides of each connecting frame, the inner walls of the sliding grooves are connected with connecting plates in a sliding mode, and the connecting plates are connected with the supporting frames in a sliding mode. The sides, close to each other, of the two connecting plates are fixedly connected with the same first spring, clamping blocks are fixedly connected to the lower surfaces of the connecting plates, limiting plates are slidably connected to the side faces of the clamping blocks, positioning blocks are fixedly connected to the lower surfaces of the limiting plates, and two fixing grooves are formed in the lower surface of the connecting frame; the inner wall of the fixing groove is slidably connected with a fixing rod. The problems that the theodolite slides due to abrasion of the positioning block, and errors are caused by inaccurate measured data are solved.

A surveying system comprises a base 3, a first alidade 7 mounted on the base and rotatable relative to the base about a first axis 9, a first optical instrument 17 mounted on the first alidade 7, wherein the first optical instrument is configured to emit a first beam 41 of measuring light, a second alidade 19 mounted on the base and rotatable relative to the base about a second axis 21, and a second optical instrument 25 mounted on the second alidade, wherein the second axis substantially coincides with the first axis. The first optical instrument includes a scanner 31, and the second optical instrument includes at least one camera 63.