2312 results about "Telescope" patented technology

The present invention belongs to the technical field of LiDARs, and particularly relates to a system and method for synchronous detection of atmospheric data in the same path. The detection system comprises a transmitting unit, a receiving unit and a data processing unit, wherein the transmitting unit comprises a plurality of laser devices, and is used for synchronously transmitting laser having different wavelengths in a common path; the receiving unit comprises a receiving telescope, which is symmetrically provided with a plurality of sub-apertures used for receiving echo signals that are generated after the laser having different wavelengths interacts with the atmosphere; and the data processing unit is used for calculating atmospheric data parameters by means of the echo signals. By means of the present invention, synchronous detection of a plurality of atmospheric data parameters in the same path can be implemented.

A system can use a plurality of co-located telescopes to generate enhanced telescopic imagery of space objects. The system may be configured to receive telescopic imagery data of a plurality of space objects obtained from the plurality of co-located telescopes. The system can receive at least two imaging criteria. The available imaging criteria can include a target signal sensitivity comprising a minimum signal to noise ratio (SNR), a target number of spectral bands comprising a minimum number of spectral bands, a spectral range associated with one or more of the spectral bands, a location of the plurality of co-located telescopes, a target data cadence comprising a minimum number of frames per minute, a target number of space objects to be tracked, a target minimum spatial resolution, among others. The system can transmit instructions to the plurality of telescopes and generate enhanced telescopic imagery.

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 invention discloses a rapid automatic focusing module and method suitable for a fluorescence microscope. The automatic focusing module comprises a laser, a diaphragm, a collimating lens group, a reflector, a dichroic mirror, an objective lens, a sample to be measured, a telescope lens group, a CCD2 detector, a control system and a displacement platform which are sequentially arranged along a focusing light path, and the sample to be measured, the objective lens, the dichroic mirror, a tube lens and the CCD2 detector which are sequentially arranged along an imaging light path; the collimated laser beam is emitted to the plane where the sample to be detected is located through the objective lens, and then the laser beam is reflected back to the telephoto lens group and converged to the CCD2 detector. According to the offset of the center of the reflected light beam, the relative distance between the objective lens and the to-be-tested sample is moved through a control system, and automatic focusing of a single view field of the to-be-tested sample is achieved; the to-be-measured sample is moved to the focal planes of different object view fields in the X direction and the Y direction and is quickly focused in real time, so that the large-size to-be-measured sample is always kept at the focal plane position, and the image quality and the working efficiency are improved.

The invention relates to the technical field of telescope guiding, in particular to a telescope guiding method and application thereof.The method includes the steps that for a telescope with the azimuth angle rotating range within the # imgabs0 # interval, the rotating track of the telescope is planned according to the relation between the azimuth angle of original guiding data of the telescope and the current pointing direction of the telescope, and the azimuth angle of the telescope is obtained; therefore, the actual guiding data of the telescope is obtained, the telescope is guided, and different plans are made for the guiding method of the telescope according to fixed stars, satellites and temporary targets. According to the method, it can be ensured that the telescope does not generate unnecessary reverse circle-crossing rotation before single target observation starts, it can also be ensured that reverse circle-crossing rotation is not generated in the single target observation process as much as possible, the target observation waiting time is shortened, the target observation interruption probability is reduced, and the effective observation time is prolonged.

The invention relates to a binocular handheld telescope which comprises a first lens cone and a second lens cone, the first lens cone and the second lens cone are arranged side by side, a first optical imaging system is arranged in the first lens cone, and a second optical imaging system is arranged in the second lens cone. The focusing parameters of the first optical imaging system and the second optical imaging system are different; the handheld assembly is connected between the first lens cone and the second lens cone; wherein the handheld assembly comprises a focusing assembly, and the focusing assembly independently adjusts the focal length of the first optical imaging system and the focal length of the second optical imaging system. The embodiment of the invention provides a binocular handheld telescope. Focal length adjustment of an optical imaging system with a plurality of different focusing parameters can be independently realized through a focusing assembly.

The invention belongs to the technical field of telescope manufacturing, and discloses a 20 * 42 telescope system which is characterized in that an objective first lens, an objective second lens, a focusing lens, a semi-pentaprism, a roof prism, a rhombic prism, an eyepiece first lens, an eyepiece second lens, an eyepiece third lens and an eyepiece fourth lens are sequentially arranged in the optical axis direction from the object side to the image side. The visual field of the whole machine is 3.25 degrees, the exit pupil diameter is 2.1 mm, the exit pupil distance is 35 mm, the nearest focusing distance is 8 m, and the image stabilization range is + / -5 degrees.

The present invention discloses an apparatus for quickly finding a planet by using a mobile phone, including: a digital telescope, an electronic compass, a pan / tilt configured to install the digital telescope, a mobile phone, a PC terminal, and a data converter. The digital telescope includes a telescope housing. A main camera configured to photograph target starry sky and a planet-finding camera configured to search for and photograph a target planet are disposed at one end that is of the telescope housing and that faces starry sky. The present invention is used more easily when a user's professional level is reduced.

The invention relates to the technical field of space telescope image processing, and particularly provides a large-view-field spliced space telescope image high-precision restoration method, which comprises the following steps of: constructing a distribution relation of wavefront aberrations with different frequencies along with a view field according to optical parameters of a telescope; based on the relation between the intensity two-dimensional matrix of any field-of-view image plane PSF image and the wave aberration of the corresponding field-of-view, an image plane PSF image of a specific field-of-view is actually measured through a wavefront sensor arranged on the telescope, and the wave aberration of the specific field-of-view is calculated based on the actually measured image plane PSF image; the PSF of any view field is derived according to the distribution rule of wavefront aberrations with different frequencies along with the view field and the relation between the intensity two-dimensional matrix of the image plane PSF image and the wave aberration, and the PSF of any view field derived from the actually measured PSF is utilized to realize the high-precision restoration of the spliced space telescope image through an image block restoration method. According to the method, the actually-measured PSF is adopted for image restoration, the defect that estimation PSF is adopted during traditional non-blind deconvolution is overcome, and the restoration precision is improved.

This application relates to the field of telescopes, and provides a stabilized gimbal of an erecting prism, a stabilized monocular, and stabilized binoculars. The stabilized gimbal of an erecting prism includes a prism casing, a rotation frame, an external mounting bracket, and a drive control assembly, where the drive control assembly is configured to: drive the prism casing to rotate around a first rotation shaft, and drive the rotation frame to rotate around a second rotation shaft based on deflection position information of the prism casing, deflection position information of the rotation frame, and three-dimensional rotation angular velocity information of the erecting prism.

The invention relates to a wide-view C-shaped arm X-ray machine and an imaging method thereof.The wide-view C-shaped arm X-ray machine comprises a main machine, a C-shaped arm, an X-ray source, a flat panel detector, a first telescopic mechanism, a first translation mechanism and a first swing mechanism, the first telescopic mechanism is arranged at one end of the C-shaped arm and used for driving the first translation mechanism and the flat panel detector to stretch out and draw back, and the first swing mechanism is arranged at the other end of the C-shaped arm and used for driving the X-ray source to swing. The first translation mechanism is arranged on the first telescopic mechanism and used for driving the flat panel detector to translate, and the first swinging mechanism is arranged at the other end of the C-shaped arm and used for driving the X-ray source to swing so as to follow the position of the flat panel detector, so that X-rays emitted by the X-ray source can fall on the flat panel detector. The flat panel detector can move to different imaging positions to obtain images at different positions, and the images are synthesized into a larger image, so that the area of an imaging region is greatly increased, the observation view of a doctor is expanded, and the efficiency and safety of an operation are improved.

The invention provides a laser follow-up device and method based on an adaptive coupling system, and the method comprises the steps: observing a plurality of target points and laser drop points through a telescope system, comparing the light intensity changes of the target points and the laser drop points, and judging whether the laser drop points are located at the corresponding target points or not; the coarse tracking system adopts a coarse tracking algorithm to scan a target and tracks the target according to a scanning result, so that the target is located in the center of a field of view; the fine tracking system adopts a fine tracking algorithm to detect target information and adjusts a target tracking angle according to the target information; the optical fiber coupling system adopts an optical fiber coupling algorithm to carry out self-adaptive adjustment on multiple beams of laser, so that a laser drop point corresponds to a target point, and an aiming angle is obtained; and the control system is used for performing data transmission, driving transmission and motor control, and controlling the laser to perform same-light-path reverse laser emission according to the aiming angle. According to the invention, high-precision tracking of a plurality of moving targets can be synchronously realized, and the remote laser energy transfer efficiency is greatly improved.

The invention relates to the technical field of large-aperture telescope construction, in particular to a large-aperture spliced telescope progressive generation method, which comprises the following steps of S1, constructing a local co-phase region at the edge of a large-aperture telescope by using spliced sub-mirrors through assistance of a small-aperture secondary mirror, and forming local co-phase imaging capability; s2, the step S1 is repeated, and equal-area local co-phase regions are constructed at the symmetrical positions of the edge of the large-aperture telescope; s3, constructing an interference imaging system through optical path difference adjustment, zero interference elimination and two symmetrical local co-phase regions; s4, repeating the steps S1 to S3, constructing more symmetrical and equal-area local co-phase regions at the edge of the large-aperture telescope, and constructing interference imaging in which the plurality of symmetrical local co-phase regions participate; and S5, constructing local co-phase regions in sequence from the edge to the center until the construction of the whole large-aperture telescope is completed.

The invention discloses a frequency discrimination curve calibration system, method and device. A frequency locking technology is adopted, the output laser frequency of the seed laser is stably locked on an absorption peak of the atom / molecule absorption cell, and the problem of frequency drift of the seed laser is effectively solved. Meanwhile, two acousto-optic modulators are used for implementing accurate out-of-cavity passive frequency modulation on the seed laser, and the laser frequency is moved to a preset zero-speed frequency point of an optical frequency discriminator and a linear working area edge frequency point from an atom / molecule absorption peak position. In the calibration process, the telescope vertically points to the zenith, and atmospheric echoes with zero Doppler frequency shift are provided as reference. At the moment, the optical frequency discriminator measures and records the transmittance of a preset zero-speed frequency point in the center of the linear working area and the transmittance of an edge frequency point, and a new frequency discrimination curve can be derived based on the linear hypothesis of the frequency discrimination curve.

The invention discloses a design method for an airborne snapshot type hyperspectral polarization zoom imaging optical system, and relates to the field of optics, and the method comprises the steps: calculating the focal length of a zoom group, the rear intercept of a front zoom telescoping system, the moving distance of the zoom group, the focal length of a front fixed group, and the focal length of a rear fixed group according to a focal power distribution model of a reverse long-distance zoom objective lens; setting the distance between the zoom group and the diaphragm according to the moving distance of the zoom group; the zoom group is arranged between the front fixed group and the diaphragm in a sliding manner; determining an optimal glass combination according to the total focal power corresponding to each glass combination, and setting the material of each lens according to the optimal glass combination; simulating each combination to obtain the distinguishable minimum wavelength difference of the polarization detector under each combination, calculating the focal length of the imaging mirror according to the minimum wavelength difference, and designing the zoom imaging optical system according to the combination corresponding to the minimum wavelength difference and the focal length of the imaging mirror. According to the invention, the snapshot type hyperspectral polarization imager with both high spatial resolution and high spectral resolution can be designed.

The invention discloses a variable beam divergence angle laser communication terminal and a rapid capturing method thereof, and belongs to the technical field of optical communication equipment. Comprising a main telescope, a fine tracking fast reflecting mirror, a beam splitter, an optical filter, a beam splitter, a beacon receiving lens group, a beacon detector, a signal transmitting lens group, an advanced aiming fast reflecting mirror, a signal receiving lens group, a receiving optical fiber amplifier, a multi-core optical fiber splitter, an optical switch and a transmitting optical fiber amplifier, a signal light emitting light path, a beacon light receiving light path and a signal light receiving light path are formed; the signal light emission light path provides emission light beams through different mode field optical fibers and performs shaping and variable beam divergence angle emission on the emission light by using different paths of an emission mirror group, and the signal light receiving light path is used for completing collection, shaping, coupling and light amplification on input signal light. And the beacon light receiving optical path is used for collecting, shaping and converging the input signal light, and positioning a target light spot by using an image positioning detector. According to the invention, the remote capturing efficiency can be improved.

The utility model provides a monitoring camera capable of expanding a monitoring area, which belongs to the technical field of monitoring, and comprises a fixed plate, a mounting plate is fixed on the outer side wall of the fixed plate, a rotating shaft is rotatably connected onto the mounting plate, a rotating structure is arranged on the mounting plate, a connecting frame is fixed at the top end of the rotating shaft, and the connecting frame is fixed on the outer side wall of the fixed plate. A mounting frame is fixed to the outer end of the connecting frame, a first motor is fixed to the outer side wall of the inner end of the mounting frame, the driving end of the first motor penetrates through the side wall of the mounting frame and is fixedly connected with a threaded rod, and the threaded rod is in threaded connection with a moving block. Through the arrangement of the mounting frame, the first motor, the threaded rod, the moving block, the first telescopic frame, the second telescopic frame, the connecting shaft, the belt wheel, the synchronous belt, the connecting block, the first gear and the rack, the camera is driven to move outwards, farther places can be monitored, the monitoring range is remarkably expanded, and the monitoring efficiency is improved. The problem that adjustment is inconvenient due to the small monitoring range in the prior art is solved.

The invention relates to a linear array push-broom imaging spectrum system based on an optical fiber device, which comprises a spectrograph, an objective lens and an optical switch, and is characterized in that the view field of a telescope objective is fully utilized, and a second optical fiber of a linear array is coupled to the focal plane of the objective lens to fill the one-dimensional view field of the objective lens. The second optical fiber is connected with the optical switch, the on-off of the sub optical fibers corresponding to different view fields is rapidly controlled through the optical switch, and the flight motion of the aerial carrier platform is matched, so that rapid time-sharing detection based on different view fields of the same high-speed spectrometer can be realized, and an imaging spectrum detection effect similar to push-broom imaging detection can be realized. Compared with a conventional linear array sweep imaging spectrum system, the optical fiber array and the optical switch device are adopted to replace a sweep mechanism, sweep mechanical moving parts are not needed, the size and the weight of the imaging spectrum system are greatly reduced, and the influence on the flight stability of an aerial carrier platform is extremely small.

The invention discloses an optical delay line in a Fizeau type optical synthetic aperture imaging system. The Fizeau type optical synthetic aperture imaging system comprises a simulation light source subsystem, a sub-aperture variable baseline subsystem, a light combination imaging delay line, a light combination imaging subsystem, a light combination imaging variable baseline subsystem, a first optical path detection subsystem, a second optical path detection subsystem and the like. Wherein optical delay lines in the first optical path detection subsystem and the second optical path detection subsystem are consistent in structure, composition, function and performance, are symmetrically arranged on two sides of the system, and form an angle of + 49.1 degrees / -49.1 degrees with the horizontal plane; the optical delay line is applied to an optical path detection subsystem in a Fizeau type optical synthetic aperture imaging system composed of four sub-apertures, and is obliquely arranged relative to the horizontal plane, so that each optical path detection telescope can measure three optical path detection light beams at the same time; two sets of symmetrically arranged optical path detection subsystems are set up in the system, so that four-beam optical path difference detection can be realized, and the detection efficiency is high.

The invention discloses a method and system for measuring the time delay of a satellite laser ranging system based on a space target, relates to the technical field of laser ranging, and aims to measure the time delay of the system by using a geostationary satellite with a stable orbit and a long distance as a space target. According to the method, the influence of error sources such as a ground observation system, a space transmission link and an observation target on the time delay of the laser ranging system is fully considered. By implementing the dynamic observation process, the problem that a static ground target can only obtain the system time delay under the pointing of a single telescope is solved, and the common obvious difference between an actual observation condition and an ideal setting condition is overcome, so that the accuracy of a laser ranging result is improved.

The invention discloses a star map registration method based on a remote optical image, relates to the technical field of image processing, and solves the problems that the existing method is multi-oriented to a single telescope, most of the single telescope is aligned at a star point level, and the robustness is insufficient when parallax, distortion, optical difference and background pollution exist in remote multi-station imaging. The method comprises the following steps: acquiring a remote star map and extracting a star point centroid; angular distance calculation and triangle construction; registering the centroids of the star points in the whole image; performing similarity transformation and homography estimation; and carrying out sub-pixel refinement and full image registration. According to the invention, dual registration of star point centroids and pixel coordinates can be realized for star maps shot by a plurality of telescopes in different places, and meanwhile, a high-quality registration reference can be provided for subsequent three-dimensional information acquisition of a space target and identification and positioning of the space target.

The invention provides a compact hyperspectral imager optical system and an imaging method thereof, which are used for solving the technical problems that the overall size of a front telescopic assembly in a traditional hyperspectral imager optical system is difficult to compress, the installation and adjustment difficulty is relatively large, or the incident energy is lost and the space coverage capability is insufficient. And the technical problems of low energy utilization rate and difficulty in improving the sensitivity and the signal-to-noise ratio of the hyperspectral imager of the traditional Dyson type dispersion light splitting assembly are solved. The invention provides a compact hyperspectral imager optical system, which comprises an off-axis two-image-reflection telecentric optical path system based on a free-form surface and a Dyson light splitting system based on a curved surface prism, and realizes high regulation and control capability on light through multiple degrees of freedom of a curved surface shape. Compared with the prior art, the high-spectral imaging device has the advantages that the high-spectral imaging device is simple in structure, high image quality, small distortion and good telecentricity are achieved, meanwhile, the curved prism serves as a dispersion light splitting element, the whole spectrum has high light splitting efficiency, and the signal-to-noise ratio and sensitivity of the high-spectral imaging device can be improved.

The invention discloses an anti-interference laser radar based on quantum noise and a ranging method, and belongs to the technical field of laser radars. Coherent state optical signals generated by a laser are split into signal light and local oscillation light through a beam splitter; random phase modulation is carried out on the signal light according to the true random number sequence, so that the phase difference between adjacent signal light is smaller than the vacuum shot noise; the signal light subjected to random phase modulation irradiates a target object after being expanded by the transmitting telescope, and echo signal light is formed after being reflected and enters the receiving telescope; performing coherent detection on the echo signal light by using a coherent detection module and local oscillation light, and generating initial data by collecting an output electric signal; and carrying out phase calculation on the initial data, generating demodulation data, and carrying out shift cross-correlation operation on the demodulation data and the true random number sequence to obtain a target distance. Only random phase modulation is needed, random amplitude modulation is not needed, an amplitude modulator is omitted, and the cost and complexity of the system are reduced.

The invention discloses an unmanned aerial vehicle intelligent inspection method and system based on FAST structure abnormal target identification. The method comprises the following steps: S1, establishing an unmanned aerial vehicle control platform; s2, a flight path scheme of the unmanned aerial vehicle is set in combination with the multi-source data acquisition type and the telescope structure characteristics; s3, for the FAST complex structure abnormal target, acquiring an infrared image and a visible light image by using an unmanned aerial vehicle effective load; obtaining a visible-infrared image pair after registration; s4, marking the visible light image of the abnormal target data, and forming a multi-source FAST structure abnormal target data set by a marked abnormal target label and a visible-infrared image pair; s5, preprocessing data in the FAST structure abnormal target data set to form an amplified data set; and S6, performing intelligent identification and verification on the FAST structure abnormal target according to the multi-source fusion abnormal target detection model. The unmanned aerial vehicle technology is applied to astronomical observation equipment structure inspection for the first time, and the inspection efficiency of a radio telescope can be greatly improved.

A steering column assembly includes a lower jacket. The steering column assembly also includes an upper jacket disposed within the lower jacket and being telescopingly adjustable relative to the lower jacket. The steering column assembly further includes a telescope drive assembly electrically moving a telescope drive nut axially to telescopingly adjust the upper jacket. The steering column assembly yet further includes an energy absorption strap directly coupled to the upper jacket and directly coupled to the telescope drive nut to transfer axial movement of the telescope drive nut to the upper jacket.

A digital adaptive optics encoder module includes an input mounting flange, a collimating lens, a bandpass filter, digital adaptive optic elements, refocusing lens, an output mounting flange, and a housing. The input mounting flange is capable of attaching to a telescope. The collimating lens is capable of expanding light from a target to fill a plurality of primary apertures. The bandpass filter has a bandwidth ranging from about 40 nm to about 100 nm. The digital adaptive optic elements include the plurality of primary apertures, an optical spreader, a focusing optic, and a detector. The refocusing lens is capable of refocusing an output from the digital adaptive optic elements onto a sensor plane. The output mounting flange is capable of attaching to an output connection. The housing encloses all of the interior components of the digital adaptive optics encoder module.

According to the sighting telescope for detecting the unmanned aerial vehicle and the control method of the sighting telescope, a view field area is scanned mainly through active narrow-band near-infrared laser, remote detection and discovery of peeping photoelectric equipment of the unmanned aerial vehicle can be achieved, and the sighting telescope is small in system size and low in cost. According to the main technical scheme, the sighting telescope of the detection unmanned aerial vehicle is characterized in that a laser emitting module is used for emitting detection laser; the imaging assembly is used for acquiring image information; the main control module is connected with the laser emitting module, the imaging assembly and the display module, the main control module is used for controlling the laser emitting module to emit laser and extracting unmanned aerial vehicle information according to the image information, and the display module is used for displaying according to the image information and the unmanned aerial vehicle information. The invention is mainly used for laser detection.

The invention discloses a channel-associated local oscillator free space continuous variable quantum key distribution method, which comprises the following steps of: initializing a receiving end telescope and a transmitting end telescope, detecting the local oscillator light intensity of a receiving end, adjusting the telescopes to be in an optimal coupling efficiency state, and tracking the change of beacon light through a fine tracking and pointing system of the telescopes so as to maintain the stability of a communication link; a transmitting end performs heterodyne detection on 90% of thermal-state optical signals after polarization and beam splitting of a thermal-state light source, results X and P serve as local initial secret keys, the other 10% of thermal-state optical signals are attenuated and then combined with local oscillation light to be transmitted to a receiving end through a free space channel so as to perform homodyne or heterodyne detection, and corresponding initial continuous secret key data are obtained; and the receiving end performs data frame synchronization, phase compensation, parameter evaluation, error correction and confidentiality enhancement on the obtained initial continuous key data to obtain a binary bit key. The channel associated local oscillator free space CVQKD safe coding based on the thermal state source is realized, and the average key distribution rate under a-15dB attenuation channel reaches a thousand bps magnitude.

The invention discloses a watermark embedding and detecting method and system based on a large model. The method comprises the following steps: acquiring a real text sequence of a watermark to be embedded; constructing a watermark embedding and detecting model based on a large model; and completing watermark embedding and detection of a real text sequence by using the watermark embedding and detection model. According to the method, the watermark is directly embedded in the model training process, and the detection mechanism is optimized, so that efficient embedding and accurate detection of the watermark are realized. A generative adversarial network and a binocular telescope structure are innovatively introduced, so that the natural fluency of a generated text is ensured, and the robustness of a watermark under adversarial attack and natural rewriting is remarkably enhanced. Meanwhile, the calculation cost is reduced by adopting a low-rank adapter technology, so that the method can be widely applied to various pre-training large models and has very high adaptability.

The invention discloses a telescope parameter efficient optimization method and system based on a Bayesian algorithm and a fluctuation optical TTL coupling noise calculation model, and aims to solve the problem that a fluctuation optical high-precision calculation module is used for improving TTL coupling noise calculation precision in an existing telescope parameter optimization method. And due to frequent calling of a high-time-consumption module, the optimization time is sharply increased, and the efficient design requirement of a space gravitational wave detection task is difficult to meet. According to the method, on the basis of the principle of a Bayesian optimization algorithm, potential optimal to-be-evaluated telescope parameters are searched through an agent model, a collection function and the optimization function of Zermarkes software; and calculating TTL coupling noise of the telescope to be evaluated by combining a light field propagation calculation method based on a wave optics theory with a light field-phase resolving method, carrying out iterative optimization on telescope parameters, and outputting optimal TTL coupling noise and optimal telescope optical parameters.