250 results about "Theodolite" 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.

The rotary kiln cylinder centerline measuring and adjusting device comprises a rotary kiln body, wherein several groups of measuring device assemblies are arranged inside the rotary kiln body, a laser theodolite is arranged outside the rotary kiln body, and a target plate is arranged inside the rotary kiln body; the measuring device assembly comprises a support shell, wherein two groups of support seats extending to the outside of the support shell are slidably arranged inside the support shell, a first ball seat is fixed to the outer wall of one side of the support shell, and a telescopic rod is rotatably arranged at the other end of the first ball seat; by rotating the handle, the inner rotating rod can be driven to rotate, and under the mutual cooperation of pushing the rotating rod and the inner sliding seat, one end of the two groups of support seats can be driven to slide into the support shell; at this time, the measuring device assembly is hoisted into the rotary kiln by a crane, and then the handle is released. Under the restoring force of the telescopic spring, the ends of the two groups of support seats can be made to tightly contact with the inner wall of the rotary kiln, thereby greatly improving the stability of the measuring device assembly.

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.

A line and level determination system for a trenchless construction apparatus has a block assembly which is attached by welding to a lead casing to be installed with the trenchless construction apparatus. The block assembly has a water inlet, a water outlet, a tilt sensor and a light emitting device disposed within the water outlet. A water hose has a first end attached to the water inlet and a second end attached to a water source. The line and level determination system has a controller connected to the tilt sensor and the light emitting device. The controller selectively energizes the tilt sensor and the light emitting device. Data from the tilt sensor is displayed on a screen of the controller. A surveying instrument, such as a theodolite, may be utilized to determine line from the illumination of the light emitting device into the casing.

A fully automatic leveling system for a deck theodolite comprises: a leveling device, on which a deck theodolite is arranged and which is configured to adjust a horizontal axis system of the deck theodolite on the basis of a control instruction from a leveling controller; a first gradienter, which is arranged on the deck theodolite and configured to read and provide to the leveling controller the levelness of the deck theodolite in a certain direction; a reference plane extension device, which is arranged on a ship datum plane and configured to acquire values of levelness deviation between the reference plane extension device and the ship reference plane in different directions and provide the values of levelness deviation to the leveling controller; a second gradienter, which is arranged on the datum plane extension device and configured to read and provide to the leveling controller the levelness of the ship datum plane in a certain direction; and the leveling controller, which is configured to automatically rotate and adjust the deck theodolite on the basis of the read values of levelness deviation between the horizontal axis system of the deck theodolite and the ship reference plane, thus achieving automatic leveling of the deck theodolite by means of repeat iterations.

The invention provides an off-axis angle precision measurement method, relates to the technical field of optical measurement, and solves the problems that in the prior art, a mechanical contact type measurement method easily scratches a mirror surface and is low in resolution, an optical interference method depends on expensive elements and is easily interfered by the environment, and an autocollimator rotary table method is limited in measurement range and low in measurement cost. And a laser tracker multi-point calibration method is high in equipment cost and complex in data processing. According to the technical scheme, a photoelectric theodolite, an off-axis mirror and a laser interferometer are coaxially installed, a reference coordinate system is established through the photoelectric theodolite, it is ensured that light beams of the laser interferometer always enter the center of the off-axis mirror by means of a six-dimensional adjusting platform, a detection light path is established, and space coordinates of a calibration point are secondarily measured through the photoelectric theodolite; solving an off-axis angle value by combining a space coordinate transformation algorithm; the device and the method have the advantages of high measurement precision, avoidance of mirror surface damage, high environmental adaptability, large measurement range, high automation degree and the like, and are suitable for off-axis angle precision measurement requirements in optical system manufacturing and debugging.

The invention discloses a gyroscopic total station and geomagnetic theodolite combined magnetic declination measurement method, which comprises the following steps of: 1, selecting a true north position edge to carry out gyroscopic orientation measurement, and calculating instrument constants of a gyroscopic total station; 2, erecting a gyroscopic total station and a geomagnetic theodolite at two ends of the measuring line; 3, starting the gyroscopic total station to carry out gyroscopic north-seeking measurement; 4, the gyroscopic total station is used for aiming at the geomagnetic theodolite installation point, and the true north azimuth angle in the direction from the gyroscopic total station measurement point to the geomagnetic theodolite measurement point is measured; 5, measuring a geomagnetic azimuth angle by adopting a geomagnetic theodolite; 6, returning to the true north position edge to carry out gyroscopic orientation measurement, and calculating instrument constants of the gyroscopic total station; if the two constant changes are smaller than 2 delta, the requirement is met, and otherwise, constant changing is performed again; and 7, inversely calculating the true north azimuth angle of the installation point of the geomagnetic theodolite, and calculating the magnetic declination of the installation point of the geomagnetic theodolite. The device is high in measurement efficiency, high in maneuverability, and low in labor intensity and measurement cost.

The invention provides an assembly system and an assembly method of an off-axis optical system, which are used for solving the technical problems that all optical elements of the existing off-axis optical system do not have a common optical axis, the assembly difficulty is high, and the high-precision assembly and adjustment of the off-axis optical system cannot be met by a traditional assembly and adjustment process method. The system comprises a three-coordinate measuring machine, a laser interferometer, a compensating mirror and an optical imaging camera. The device further comprises an auto-collimation theodolite, a target ball, an adjusting support and a five-dimensional adjusting table. And installing and adjusting the third reflector to obtain the position of the first target ball. The theoretical position of a second target ball is calculated according to the position of the first target ball, a main reflector is installed and adjusted, a compensation detection light path of the main reflector is set up, the focus position of the laser interferometer is obtained, finally, the focus position coincides with the theoretical position of the second target ball, and assembling of the off-axis type optical system is completed.

The invention discloses an optical aspheric optical axis calibration system and method based on a CGH, and belongs to the technical field of precision optical machine installation and adjustment. The system comprises an optical platform, wherein a first theodolite, an interferometer, a CGH and an aspherical mirror to be calibrated are sequentially arranged on the optical platform along a light transmission path; the aspheric mirror to be calibrated is provided with a calibration accurate measurement mirror. The first theodolite, the interferometer, the CGH and the aspherical mirror to be calibrated are all arranged on the position-adjustable platform. The method comprises the following steps: step 1, adjusting an alignment area of the CGH to be aligned with an interferometer; 2, adjusting the position of a to-be-calibrated aspherical mirror, and enabling the angle between the optical axis of the CGH and the optical axis of the to-be-calibrated aspherical mirror to be consistent with a theoretical angle; 3, calculating a theoretical pitch angle between the optical axis of the CGH and the aspherical mirror to be calibrated; 4, transferring the angle reference of the CGH to a first theodolite; and step 5, installing the to-be-calibrated fine measurement mirror on the to-be-calibrated aspherical mirror.

This application relates to the field of quality inspection technology, and discloses a method for human-machine interaction assembly quality inspection of a theodolite-type spaceborne laser coarse pointing mechanism based on HCPS. In the design stage, a design scheme is generated based on design requirements; in the manufacturing stage, the similarity of production tasks and the skill levels of manufacturing personnel are evaluated, tasks are matched with corresponding skills through strategy transfer, combined with AI technology and diverse interaction modes, feedback from manufacturing personnel is continuously collected and an adaptive strategy for human-machine interaction is implemented, and incremental learning based on events or historical data is autonomously carried out through a human-machine collaboration system; in the assembly stage, when the coarse pointing mechanism is assembled using equipment in physical space, based on the support of the information space, the quality of all components is checked before assembly; in the inspection stage, a test workstation is set up to offset the gravity influence of the mechanical structure, multiple parameters are measured, and the assembly quality is determined according to corresponding inspection principles. This application is based on human-machine collaborative CPM assembly quality inspection to ensure accuracy.

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.

The present application relates to the technical field of installation and debugging of plate turning machining center, and discloses a large plate turning machining center plate turning precision adjustment method, comprising the following steps: step S1, pad iron pre-installation: installing adjustable pad iron on the back of the workbench base, and installing bottom pad iron on the bottom of the workbench base; step S2, initial adjustment: adjusting the adjustable pad iron to the middle value of the full stroke; adjusting the bottom pad iron to the three-equal-part strength state; ensuring that the foot rod is located at the center of the workbench base hole; and adjusting the adjustable pad iron on the upper end of the workbench base to be close to the two sides, wherein the present application adopts the adjustment sequence from the middle to the two sides and the corresponding upper and lower adjustment sequence, avoids stress concentration, solves the precision deviation problem caused by the chaotic existing adjustment sequence, clearly defines the torque parameters and precision standards of each link, avoids human operation differences, significantly improves the repeated precision, combines multiple detections of the theodolite, collimator and electronic level, sets a three-day continuous re-inspection mechanism, effectively avoids precision drift, and ensures the long-term operation stability of the equipment.

The invention relates to the technical field of surveying and mapping supports, and discloses a surveying and mapping frame with a positioning structure for land surveying and mapping, the surveying and mapping frame comprises an equipment support, a vertical plate is fixedly mounted on the rear side of the upper end surface of the equipment support, a side plate is rotatably mounted on the front end surface of the vertical plate, and an extension plate is fixedly mounted on the left end surface of the side plate; a top plate is rotatably mounted on the right end face of the extension plate, a connecting cover is fixedly mounted in the middle of the lower end face of the equipment support, and the leveling mechanism is arranged on the side walls of the vertical plate and the extension plate. A clamping mechanism; and a supporting mechanism. Through the arrangement of the leveling mechanism, the clamping mechanism and the like, the surveying instrument can be rapidly limited and leveled, the surveying instrument is kept in a relative horizontal state all the time in the using process, data errors caused by inclination of the surveying instrument are avoided, and the measurement precision requirement is guaranteed; the height of the surveying instrument can be adjusted, and the stability of the surveying instrument during use is guaranteed.

The invention provides a particle radiotherapy isocenter determination method, a debugging method and a related device, and relates to the technical field of particle radiotherapy, and the particle radiotherapy isocenter determination method comprises the steps: obtaining the range of the mechanical isocenter of a rack and a treatment head through an electronic theodolite and a first test tool installed on the treatment head; according to the determined range of the mechanical isocenter of the rack and the treatment head, utilizing a two-dimensional image system at a fixed position to respectively collect images of the circular geometry on the first test tool on the treatment head in two intersecting directions when the treatment head is in a horizontal position, so as to obtain two two-dimensional images; the cross curve of the two-dimensional image system is adjusted, so that the cross point of the cross curve is aligned with the center of the circular geometry on the isocenter test tool, and the mechanical isocenter of the rack and the treatment head is determined; the actual mechanical isocenter of a treatment room is accurately determined through special equipment and tools, and accurate particle radiotherapy is achieved.

The application discloses a coaxial folding and reflecting type infrared cryogenic optical system and a mounting, adjusting and testing method thereof. The optical system is composed of a main optical system, a main system support frame, a rear optical path infrared lens group, an infrared lens group lens seat and a rear optical path mounting bottom plate. In order to improve the adjusting precision and simplify the adjusting freedom, precise adjusting equipment such as an interferometer, a laser tracker, a centering instrument and a theodolite is adopted, the main optical system and the rear optical path infrared lens group are first adjusted as independent units and then are precisely integrated and tested. In order to reduce the testing period and cost of the cryogenic optical system, a testing compensation lens is inserted into the cryogenic optical path, so that the cryogenic optical system can be imaged and tested and the image quality can be evaluated in a normal temperature and pressure environment. The method has the advantages of simple principle, high precision, short period and low cost and is suitable for the mounting, adjusting and testing of the coaxial folding and reflecting type infrared cryogenic optical system.

The present invention discloses a method for hydraulically lifting large steel structures during on-site assembly. The method includes four hydraulic lifting mechanisms, which are activated sequentially based on the measurements of a total station, a theodolite, a level, and a laser plummet. The mechanisms are then activated based on the surface irregularities of the assembled lifting units, pulling objects suspended from the slings. The lifting mechanism maintains a horizontal and stable state during the pulling process, lifting the entire structure to the designed installation elevation. This method addresses the significant safety risks associated with high-altitude bulk loading operations when relying solely on hydraulic devices to pull objects. The method improves overall stability during welding and enhances the stability of objects during the lifting process.

The invention discloses a high-precision control method for optical parameters of an off-axis spliced sub-lens of a primary lens of a large astronomical telescope, and belongs to the field of advanced optical manufacturing and detection. According to the method, precise adjustment of a detection light path is achieved through different diffraction function areas of computer generated holography (CGH), and high-precision control over the curvature radius and the off-axis amount of an off-axis sub-mirror is achieved by combining distance measurement of a laser tracker and angle measurement of a theodolite. The method specifically comprises three stages of inspection light path coarse adjustment, fine adjustment and light path parameter measurement and processing, optical element space attitude adjustment is guided through a diffraction reference point of the CGH, and finally off-axis sub-mirror surface shape and optical parameter information are obtained. According to the invention, the problem of installation and adjustment precision in the detection of the large off-axis aspheric reflector can be effectively solved, and reliable technical support is provided for the manufacturing of the primary mirror and the spliced secondary mirror of the astronomical telescope.

The present application provides a method for benchmarking and base installation of an ultra-long shaft system, comprising: S1, locating and surveying the bow and stern reference points of the shaft system in the hull; S2, surveying a coordinate system in the hull with the bow and stern reference points as references, and surveying the position of the intermediate light target in the surveyed coordinate system; S3, pulling the axis steel wire with the surveyed bow and stern reference points and the intermediate light target as references; S4, calculating the three-dimensional coordinates of the shaft system base in the surveyed coordinate system, locating the longitudinal coordinates of the shaft system base with the intermediate light target as reference, and locating the transverse and vertical coordinates of the shaft system base with the axis steel wire as reference; S5, according to the calculated transverse, longitudinal, and vertical coordinate values, cutting a preset margin at the bottom of the shaft system base, and then positioning and installing the shaft system base. This method solves the problem that traditional laser theodolites cannot meet the accuracy requirements within an ultra-long range and the problem that the base positioning is difficult due to the longitudinal inclination angle and flared angle of the ultra-long shaft system.

The utility model discloses an all-directional angle measurement engineering construction measuring device, which relates to the technical field of engineering surveying, and comprises a triangular bracket, a placing seat is arranged on the triangular bracket, a theodolite main body is rotatably arranged on the placing seat, an observation eyepiece is arranged in the middle of the upper end of the theodolite main body, and an observation lens is arranged on the observation eyepiece. According to the theodolite disclosed by the utility model, through the synergistic effect of the bidirectional threaded rod, the sliding piece, the adjusting block and the clamping plate in the adjusting assembly, the angle of the observation eyepiece can be accurately fixed, and in engineering construction measurement, the observation eyepiece can be accurately adjusted, so that the measurement accuracy is improved, and the measurement precision is improved. And the device can ensure that the angle of the observation eyepiece cannot be changed due to external force interference or self-looseness in the measurement process, so that the accuracy and the reliability of measurement data are ensured, and a reliable measurement basis is provided for construction engineering.

The invention relates to the field of image processing, and discloses a large-view-field sweep type drop point miss distance extraction method based on background stitching. According to the implementation scheme, the method comprises the following steps: 1, before a task, determining and searching a large-view-field area, and calculating a single-view-field view field angle; 2, slowly and horizontally scanning from left to right by the photoelectric theodolite, and splicing a background; 3, after the task is started, staring a preset drop point view field by the photoelectric theodolite, detecting a smoke column in a neighborhood on a horizon line, and extracting a drop point; and 4, outputting the drop point miss distance during staring or sweeping. According to the method, a background splicing-based large-field-of-view frame difference method and a strategy of staring detection first and then sweep detection are adopted, and the drop point miss distance is extracted by using the smoke column position. The method improves the detection capability of the target drop point of the visible light target in the target range.

The present invention discloses a calibration method, device, medium and product for the relationship between a two-axis turntable and a collimator, relating to the technical field of data processing. The method includes: when the theodolite and the collimator are in the light alignment condition, obtaining first angle data of the rotation of the two-axis turntable and second angle data of the 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 matrices between the two-axis turntable coordinate system, the theodolite coordinate system of the theodolite and the collimator coordinate system; and determining the conversion relationship between the two-axis turntable and the collimator according to the plurality of conversion matrices. The present invention enables the two-axis turntable in the ground inspection simulation system to be accurately aligned and calibrated with the collimator, provides a reliable guarantee for the research and development test of the laser communication terminal, and improves the accuracy and reliability of satellite communication simulation.

The application relates to a turnover device for double-layer non-correlation light paths and a method for assembling and calibrating, relates to the field of optical detection and calibration, and solves the problems that in the prior art, when double-layer non-correlation light paths are assembled and calibrated, the risk of manual turnover is large, a theodolite needs to be used to transfer a reference in a turnover process and the like; the application provides the following scheme: a bottom plate, a first lifting cylinder, a second lifting cylinder, a third lifting cylinder, a first motor, a control system, an azimuth turntable and the like; all the lifting cylinders are fixed on the bottom plate, the first lifting cylinder, the second lifting cylinder, the fourth lifting cylinder and the fifth lifting cylinder are respectively located at four vertex positions of the bottom plate, the control system outputs two turnover lifting signals to the third lifting cylinder and the sixth lifting cylinder respectively, turnover driving signals are output to the first motor and the second motor, and the control system outputs a turntable driving signal to the azimuth turntable. The assembling and calibrating method is realized by using the device, and is also suitable for the field of reference transfer in a double-layer non-correlation light path turnover process.

The invention provides a satellite-borne product installation precision testing device and method. The satellite-borne product installation precision testing device comprises a single-machine product, a reference mirror LJ1 assembly, a satellite platform and a reference mirror LJ2 assembly. According to the invention, the assembly precision test of the satellite product is realized through a high-precision measurement system, and the assembly precision is rapidly calculated, and the adjustment direction and the adjustment amount are directly given in an Euler rotation angle mode, so that rapid calculation and accurate orientation adjustment are realized; a reference mirror is used as a measurement basis, an electronic theodolite is used as test equipment, industrial measurement software (SA) is matched for use, and the size requirement and the use method of the reference mirror are provided. The method has the advantages that the error rate of testing and adjusting is effectively avoided, and the method is simple, easy to understand and high in operation adaptability; the device is suitable for assembly precision test and adjustment of all aerospace products.

The utility model discloses an auxiliary observation device for a theodolite, which belongs to the technical field of surveying and mapping instruments, and comprises a mounting cylinder, an auxiliary observation device and an auxiliary observation device, the connecting seat is detachably connected with the mounting cylinder, two mounting surfaces are arranged on the connecting seat, and a reflecting mirror in the shape of a straight triangular prism is jointly embedded into the two mounting surfaces; the cover plate is detachably arranged on one of the mounting surfaces, an observation opening is formed in the cover plate, and a transparent lens is arranged in the observation opening; according to the scheme, an observer only needs to bend to lower the head and overlook the observation opening for observation, so that the observer is converted from head-up eyepiece observation to overlook observation, which is different from the mode that the observer squats or half squats to make the eyes and the eyepiece translate, the observation is more convenient, the comfort of the observer is improved, and the observation efficiency is improved. In addition, the situation that the observation effect is affected due to the fact that observers shake during observation is avoided, the observation accuracy is improved, and high practicability is achieved.

The present invention provides a method for obtaining continuous magnetic declination. First, a first geomagnetic theodolite is set up in the target area, and the voltage-time series data is stored in real time through a continuous data acquisition board. Then, the initial reading of the horizontal dial is set, the horizontal dial is finely adjusted and left stationary after fine adjustment, and the difference between the reading after each fine adjustment and the initial reading, the corresponding voltage value, and the corresponding time before and after fine adjustment and stationary are recorded. The magnetic declination grid value is calculated, and the continuous magnetic declination sequence data is calculated and generated. Finally, the second geomagnetic theodolite set up in the target area is used for absolute measurement of magnetic declination, and the generated magnetic declination sequence data is calibrated according to the measurement results. The present invention collects the voltage signal that can represent the magnetic signal and calibrates it through the measured data. The calibrated continuous magnetic declination data obtained can accurately reflect the magnetic declination value at any time, successfully solving the current situation of difficult or inaccurate acquisition of magnetic declination diurnal variation information due to the shortage of geomagnetic stations.

The utility model belongs to the field of instrument calibration, and particularly relates to a high-precision calibration device for the spatial position and attitude of a satellite-borne optical camera. The device comprises a three-coordinate measuring instrument, a mounting shell, a laser theodolite, an accurate measuring mirror assembly, a large-aperture collimator and a beam splitter prism assembly, an imaging assembly mounting reference surface and an optical lens mounting reference surface are arranged on the mounting shell; an optical lens of a to-be-calibrated satellite-borne optical camera is mounted on the optical lens mounting datum plane, and an imaging assembly of the to-be-calibrated satellite-borne optical camera is mounted on the imaging assembly mounting datum plane; the accurate measurement lens assembly is installed on the satellite-borne optical camera. The large-aperture collimator is arranged on one side of an optical lens of the satellite-borne optical camera; the laser theodolite is arranged on one side of the satellite-borne optical camera; and the beam splitter prism assembly is arranged on an output light path of the laser theodolite. According to the utility model, the measurement precision of the space position attitude of the spaceborne optical camera is higher, and the adaptability is stronger.

The present application relates to a kind of control system index evaluation method based on external fine measurement mode, first based on analog star body builds external fine measurement system, provides control system index evaluation system environment.The angle between the two pointing target angles before and after the theodolite calibration analog star body maneuver is recorded The total time of maneuver, verify attitude control maneuver speed index.Using autocollimator measure the angle change of the initial pointing position of load simulator and the return position after maneuver, calculate the angle difference between the two stable positions before and after maneuver, combined with system error and random error, verify the attitude control precision index of control system.Using dual-frequency laser interferometer and analog star body form stable interference measurement optical path, from the imaging start time to the imaging end time, the stability of the real-time data measured by dual-frequency laser interferometer Angle, verify the attitude control stability index of control system, realize the index evaluation of spacecraft control system through external fine measurement mode, reduce professional requirements, good universality.

The invention provides land reclamation measuring equipment, and relates to the technical field of measuring equipment, the land reclamation measuring equipment comprises a base, the top of the base is provided with a theodolite, the bottom of the theodolite is fixedly provided with a stud, the base is provided with a screw hole, the stud is inserted into the screw hole in a threaded manner, the bottom of the base is fixedly provided with a slide rail disc, and the slide rail disc is provided with a slide rail. Three sets of sliding rotating shaft seats are slidably connected to the outer side of the sliding rail disc, telescopic supporting legs are rotatably installed on the outer sides of the sliding rotating shaft seats, rotating assemblies are arranged on side plates of the sliding rotating shaft seats, the rotating assemblies comprise gears, and the gears are fixedly connected with rotating connecting shafts of the telescopic supporting legs and the sliding rotating shaft seats. The three sets of telescopic supporting legs at the bottom of the base do not need to be separated from the theodolite after measurement is finished, the theodolite is wrapped and stored through cooperation of the rotating assembly and the fence assembly, certain anti-collision and dustproof effects are achieved, meanwhile, the theodolite can be conveniently and rapidly carried and used outdoors, and inconvenience caused by repeated disassembly and storage of the theodolite is reduced.

1. The name of the design product: sound (theodolite). 2. The use of the design product: for sound. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: combination state figure 1.

The invention relates to the technical field of aeronautical survey, and particularly provides a photoelectric pod and inertial navigation installation deviation calibration method which comprises the following steps: fixedly connecting an inertial navigation and a photoelectric pod, ensuring that an inertial navigation coordinate system and a photoelectric pod coordinate system are consistent in three axes, and ensuring that the azimuth angle and the pitch angle of the photoelectric pod are zero, setting an auto-collimation theodolite, and calibrating the installation deviation of the photoelectric pod and the inertial navigation. Adjusting to enable an electric cross wire of a visible light camera of the photoelectric pod to coincide with a cross wire of a reticle of the auto-collimation theodolite, and recording a pitch angle and a roll angle of inertial navigation in a current state; and rotating the photoelectric pod by 90 degrees to be in a horizontal state, repeatedly adjusting the photoelectric pod, changing the polarity of the inertial navigation coordinate system, changing the course axis into a pitch axis, recording the pitch angle of inertial navigation and the pitch angle of the auto-collimation theodolite at the moment, and calculating the installation deviation. According to the method, the deviation calibration method is simplified, the calibration difficulty is reduced, the calibration cost is reduced, and the calibration precision is improved.