CN114739428A - Tracking precision measuring device based on two-dimensional rapid control reflector - Google Patents
Tracking precision measuring device based on two-dimensional rapid control reflector Download PDFInfo
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- CN114739428A CN114739428A CN202210482683.3A CN202210482683A CN114739428A CN 114739428 A CN114739428 A CN 114739428A CN 202210482683 A CN202210482683 A CN 202210482683A CN 114739428 A CN114739428 A CN 114739428A
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
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Abstract
The invention discloses a tracking precision measuring device based on a two-dimensional rapid control reflector, which comprises: the system comprises a light source, a multispectral target, an optical collimation system, a two-dimensional fast reflector, an offner optical system, a short-wave infrared camera, an image acquisition and processing system, a computer and a photoelectric tracker. The invention adopts the two-dimensional fast reflector with high angle control precision to reflect the illumination target to simulate the dynamic target, implements accurate high-speed scanning motion, and simultaneously improves the simulation range of the dynamic target, thereby realizing the high-precision measurement of the tracking precision of the photoelectric system.
Description
Technical Field
The invention belongs to the technical field of optical measurement and measurement, and relates to a tracking precision measuring device based on a two-dimensional rapid control reflector.
Background
The tracking accuracy is an important index for measuring the performance of the photoelectric tracking system, and the tracking task is to eliminate the deviation of the sighting line from the target due to the relative motion between the photoelectric system and the target. The tracking precision is not only an important index in scientific research and shaping of the photoelectric tracking system, but also an important aspect in maintenance guarantee.
The dynamic tracking precision detection of the existing photoelectric searching and tracking system mostly adopts a method of driving a target to rotate by a mechanical motion mechanism to simulate a moving target. The commonly used detection methods mainly include a rotating beacon light method, a laser simulation beacon light method and a movable target detection method. The rotating beacon light method simulates a space target by a light source (such as an incandescent lamp, an LED and the like), and the light source is driven to rotate by a motor to form moving beacon light. The laser simulated beacon light method utilizes laser installed on a two-axis rotary table to emit beacon light beams, and generates simulated space targets on target surfaces by controlling the two-dimensional rotary table to rotate. The photoelectric system to be tested can obtain the tracking precision of the photoelectric system by tracking and calculating the simulation moving target.
The above conventional methods have the advantages of simple principle and convenient implementation, but have the following disadvantages:
(1) in both methods, mechanical motion is adopted to drive the light source to rotate, so that the motion frequency is greatly limited, and beacon light moving quickly is difficult to generate;
(2) the target motion generated by the traditional method is mainly circular motion or the superposed curvy motion of two turntables, and is difficult to simulate various motion modes such as random motion, acceleration and the like in actual high-speed motion;
(3) the rotating beacon light method and the laser simulation beacon light method take a white light LED or a laser spot as a test target of tracking precision, and cannot measure and evaluate an infrared channel in a photoelectric search tracking system;
(4) the existing photoelectric searching and tracking system usually needs to measure the consistency among different optical axes such as visible light, laser, infrared and the like besides measuring the tracking precision, but the existing method has single function and does not have the measuring function in the aspect.
Disclosure of Invention
Object of the invention
The purpose of the invention is: aiming at the defects of the prior art, the tracking precision measuring device based on the two-dimensional rapid control reflector is provided, the two-dimensional rapid reflector with high angular control precision is adopted to reflect the illumination target to simulate the dynamic target, accurate high-speed scanning movement is implemented, and meanwhile, the dynamic target simulation range is improved, so that the high-precision tracking precision measurement of the photoelectric system is realized.
(II) technical scheme
In order to solve the technical problem, the invention provides a tracking precision measuring device based on a two-dimensional fast control reflector, which comprises a light source 1, a multispectral target 2, an optical collimation system 3, a two-dimensional fast reflector 4, an offner optical system 5, a short wave infrared camera 6, an image acquisition and processing system 7, a computer 8 and a photoelectric tracker 9; the light beam emitted by the light source 1 obliquely enters the multispectral target 2, is reflected by the multispectral target 2 and then enters the optical collimating system 3 through the turning reflector, and the collimated light beam enters the photoelectric tracker 9 after being reflected by the two-dimensional quick reflector 4; a laser range finder in the photoelectric tracker 9 emits laser beams, and the laser beams sequentially pass through a two-dimensional fast reflector 4, an optical collimation system 3, a turning reflector, a multispectral target 2 and an offner optical system 5 and are received by a short-wave infrared camera 6; the short wave infrared camera 6 and the photoelectric tracker 9 are connected with the image acquisition processing system 7, and the image acquisition processing system 7 acquires a video signal of the photoelectric tracker 9 to be detected and the central position of a laser spot of the short wave infrared camera 6; and the computer 8 is connected with the image acquisition processing system 7, records and stores video signals, and calculates the deviation of the aiming line and the cross target so as to obtain the tracking precision.
The light source 1 consists of a visible light source and a laser light source, the visible light source is used for illuminating the multispectral target 2, and a visible light cross target is formed after reflection. The laser light source provides a light spot target for the detected light spot tracker.
The multispectral target 2 is used for generating a target with a fixed shape and a visible light and infrared spectrum, and is a multispectral parallel light beam after passing through the card type optical collimation system, the multispectral target 2 can reflect laser and visible light, can generate an infrared target by self-heating, and simultaneously transmits laser, visible light and infrared light, so that three light-in-one is realized, the requirements of a television system and the infrared system can be met, and additional errors caused by target replacement are avoided.
The multispectral target 2 adopts a ZnS target plate to replace a visible target plate and an infrared target plate, has the advantages of simplified structure, small size and light weight, eliminates target disorder of the measuring instrument, and is favorable for improving the measuring accuracy.
The optical collimating system 3 realizes the exit of parallel beams and the delivery of a target, adopts a coaxial reflection type system, can shorten the length of an optical path, and comprises a paraboloid primary mirror and a double-curved-surface secondary mirror, wherein the entrance pupil size of the optical collimating system 3 is phi, the wave aberration is RMS, and the focal length is f.
The two-dimensional fast reflector 4 provides a dynamic target for tracking precision measurement, and is used for accurately and fast controlling the emergent direction of light beams and accurately and fast adjusting and stabilizing the visual axis of the optical system. The two-dimensional fast reflector 4 adopts a voice coil motor driving type, the swing angle range of the two-dimensional fast reflector 4 is +/-30 mrad, and a 120mrad view field can be realized.
The offner optical system 5 is used as an optical relay system to transfer laser spot images, and the cross target can clearly image after passing through the system, so that high-definition imaging can be provided for optical axis calibration of laser and infrared systems. The Offner optical system adopts a triple-reflection system consisting of two concentric spherical reflectors, the secondary reflector is a convex reflector, and the first reflector and the third reflector are shared concave reflectors.
The short wave infrared camera 6 and the optical collimation system 3 are combined to form a short wave infrared camera, the short wave infrared camera 6 is used for collecting imaging images on the surfaces of visible and infrared sensors of the measured photoelectric tracker and obtaining laser spots emitted by a laser channel of the measured photoelectric tracker.
The image acquisition processing system 7 consists of a multifunctional image acquisition card and a high-speed camera, converts videos with different formats by adopting a data interface conversion box and then acquires the videos by the acquisition card, and simultaneously acquires PAL analog image signals and CameraLink high-definition digital signals, wherein the highest sampling rate is 100 MB/s.
And the computer 8 is connected with the image acquisition processing system 7, records and stores video signals, and calculates the deviation of the aiming line and the cross target so as to obtain the tracking precision.
When the tracking precision is measured, the photoelectric tracker 9 is firstly erected in the light path, and the posture of the photoelectric tracker 9 is adjusted, so that the optical axes of the photoelectric tracker 9 and the optical alignment system 3 are superposed. The multispectral target 2 is irradiated by a laser light source or a visible light source of the light source 1, so that a cross target is generated, the cross target is shaped into parallel light through the optical collimation system 3, the parallel light enters the measured photoelectric tracker 9 after being reflected by the two-dimensional quick reflector 4, and the measured photoelectric tracker 9 receives and aims at the cross target and enters a tracking state. The computer 8 is programmed to drive the two-dimensional fast reflector 4 to make scanning movement with a specified track, namely, the tracked cross target makes regular movement, so that the track of the far-field real space moving target is simulated more realistically, the tested photoelectric tracker 9 carries out real-time tracking, the image acquisition processing system 7 acquires the video signal of the tested photoelectric tracker 9, and the computer 8 calculates the deviation between the sight line and the cross target, thereby obtaining the tracking precision.
When measuring the optical axis uniformity, the first step: first, the deviation between the visible light axis and the laser axis is measured. The photoelectric tracker 9 is firstly erected in the light path, and the posture of the photoelectric tracker 9 is adjusted to enable the optical axes of the photoelectric tracker 9 and the optical alignment system 3 to be approximately overlapped. Irradiating the multispectral target 2 by the laser light source or visible light source of the light source 1 to generate a cross target which passes through the card type optical alignment system3, the light is shaped into parallel light, and the parallel light enters a measured photoelectric tracker 9 after being reflected by a two-dimensional quick reflector 4. Aiming the cross target of the multispectral target with the TV axis aiming line of the measured photoelectric tracker 9, then emitting laser by the laser range finder of the measured photoelectric tracker 9, converging the laser beam to the multispectral target 2 through the optical alignment system 3, imaging the multispectral target 2 by the short wave infrared camera 6, detecting the laser spot, and measuring the central position (x) of the laser spot by the short wave infrared camera 61,y1) The initial cross target center coordinates are (0, 0), and the parallelism of the laser axis and the television axis is calculated by the following formula:
wherein f is the focal length of the collimating optical system.
The second step is that: and then measuring the deviation of the infrared optical axis and the laser optical axis. The multispectral target 2 is heated by alloy wires to generate an infrared cross target, the infrared cross target is shaped into parallel light by an optical collimation system 3, and the parallel light enters a measured photoelectric tracker after being reflected by a two-dimensional quick reflector 4. Aiming the cross target of the multispectral target 2 by using the infrared thermal imager aiming line of the measured photoelectric tracker 9; then the laser is emitted by a laser range finder of a measured photoelectric tracker 9, the laser beam is converged to a multispectral target through an optical collimation system 3, a short wave infrared camera 6 images the multispectral target 2, a laser spot is detected, and the central position (x) of the laser spot is measured by the short wave infrared camera 62,y2) And calculating the parallelism of the laser optical axis and the infrared optical axis according to the following formula:
through the steps, the deviation between the visible light axis and the laser light axis and the deviation between the infrared light axis and the laser light axis are respectively measured, and the consistency of the visible light axis, the laser light axis and the infrared light axis can be calculated due to the measurement carried out in the same coordinate system.
(III) advantageous effects
The tracking precision measuring device based on the two-dimensional rapid control reflector provided by the technical scheme has the following beneficial effects:
(1) the invention adopts a large-stroke two-dimensional rapid control reflector to carry out dynamic light beam simulation, the control bandwidth is 100Hz, the control precision reaches 10 μ rad, and the high-precision measurement of the tracking precision is realized by matching with a sighting line image synchronous acquisition technology, thereby overcoming the defects of low motion frequency and low precision in the traditional simulated beacon light method;
(2) the invention can drive the two-dimensional fast reflector to realize the circular track motion, the linear track motion, the random motion, the uniform velocity, the acceleration and other forms of motion to the incident beam through the computer control, and overcomes the defects of low motor rotating speed, single motion track of the simulated target and small motion amplitude of the traditional simulated beacon optical method.
(3) The invention adopts a mode of internally arranging the thermal resistance wire in the ZnS substrate, manufactures the test target which can meet the common use of laser, infrared and visible light, and overcomes the defect that the traditional method can only provide the laser or LED visible light test target and can not measure and evaluate the tracking performance of an infrared channel.
(4) The invention realizes the integration of the functions of testing the tracking precision and the consistency of the optical axis of visible light, infrared wave bands and laser channels by the offner optical system.
Drawings
Fig. 1 is a schematic view of a tracking accuracy measuring device based on a two-dimensional fast control mirror according to an embodiment of the present invention.
FIG. 2 is a schematic representation of a multispectral target of interest according to the present invention.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
As shown in fig. 1, the tracking precision measuring device based on the two-dimensional fast control reflector of the present embodiment includes a light source 1, a multispectral target 2, an optical collimating system 3, a two-dimensional fast reflector 4, an offner optical system 5, a short-wave infrared camera 6, an image collecting and processing system 7, a computer 8 and a photoelectric tracker 9; the light beam emitted by the light source 1 obliquely enters the multispectral target 2, is reflected by the multispectral target 2 and then enters the optical collimating system 3 through the turning reflector, and the collimated light beam enters the photoelectric tracker 9 after being reflected by the two-dimensional quick reflector 4; a laser range finder in the photoelectric tracker 9 emits laser beams, and the laser beams sequentially pass through a two-dimensional fast reflector 4, an optical collimation system 3, a turning reflector, a multispectral target 2 and an offner optical system 5 and are received by a short-wave infrared camera 6; the short wave infrared camera 6 and the photoelectric tracker 9 are connected with the image acquisition processing system 7, and the image acquisition processing system 7 acquires a video signal of the photoelectric tracker 9 to be detected and the central position of a laser spot of the short wave infrared camera 6; and the computer 8 is connected with the image acquisition processing system 7, records and stores video signals, and calculates the deviation of the aiming line and the cross target so as to obtain the tracking precision.
The light source 1 consists of a visible light source and a laser light source, the visible light source is used for illuminating the multispectral target 2, and a visible light cross target is formed after reflection. The laser light source provides a light spot target for the detected light spot tracker. In the preferred embodiment, a tungsten halogen lamp is used as the visible light source in combination with reflection of an ellipsoidal reflector. The utilization efficiency of the light source is improved, and the illumination surface can be uniformly illuminated. A 1.540 μm laser was selected to illuminate the boresight target.
The multispectral target 2 is used for generating a target with a fixed shape and a visible light and infrared spectrum, the target is a multispectral parallel light beam after passing through the cassette type optical collimation system, and a ZnS target plate is adopted for lighting the multispectral target 2 to replace a visible target plate and an infrared target plate. In the preferred embodiment, the multispectral target 2 is formed by etching a cross-shaped division line on a ZnS crystal glass substrate 2-1, and meanwhile, heating resistance wires 2-2 are arranged at the same positions of the cross-shaped division line on the ZnS crystal glass substrate 2-1, and an infrared cross target or a visible bright cross target can be generated after heating. The illumination of the target adopts a self-luminous and reflected light mode, the requirements of a television system and an infrared system can be met simultaneously, and additional errors caused by target replacement are avoided.
The optical collimating system 3 realizes the exit of the parallel beams and the delivery of the target, in the preferred embodiment, a coaxial reflective system is adopted, and comprises a paraboloidal primary mirror and a hyperbolic secondary mirror, the entrance pupil size of the optical collimating system 3 is phi 150mm (6 inches), the focal length of the optical system is 1800mm, and the wave aberration RMS value of the optical system is better than lambda/8 (lambda is 632.8 nm).
The two-dimensional fast reflector 4 provides a dynamic target for tracking precision measurement, is used for accurately and fast controlling the emergent direction of light beams, and accurately and fast adjusting and stabilizing the visual axis of an optical system. The two-dimensional fast reflector 4 adopts a voice coil motor driving type, the swing angle range of the two-dimensional fast reflector 4 is +/-30 mrad, and a 120mrad view field can be realized. In the preferred embodiment, the reading resolution of the micro-displacement sensor in the full travel range of the fast reflecting mirror is 16 bits, the noise level of the analog signal input by the sensor is about 0.6LSB, the angle of the sensor in the measurement range can reach the resolution of 2 mu rad, and the requirement of controlling the pointing precision can be met.
The offner optical system 5 is used as an optical relay system to transfer laser spot images, and the cross target can clearly image after passing through the system, so that high-definition imaging can be provided for optical axis calibration of laser and infrared systems. In the preferred embodiment, a triple reflection system is used in which the Offner optical system consists of two concentric spherical mirrors, the secondary mirror is a convex mirror, and one and three mirrors are common concave mirrors.
The short wave infrared camera 6 and the optical collimation system 3 are combined to form a short wave infrared camera, the short wave infrared camera 6 is used for collecting imaging images on the surfaces of visible and infrared sensors of the measured photoelectric tracker and obtaining laser spots emitted by a laser channel of the measured photoelectric tracker. In the preferred embodiment, a national-friendly photoelectric series infrared Camera is selected, the spectral range is 0.9-2.3 μm, the resolution is 640 × 512, the refrigeration mode is TE1 or TE3, the Camera control interface is USB2.0, and the image acquisition interface is USB2.0/Camera Link.
The image acquisition processing system 7 consists of a multifunctional image acquisition card and a high-speed camera, converts videos with different formats by adopting a data interface conversion box, then acquires the videos by the acquisition card, and simultaneously acquires PAL analog image signals and CameraLink high-definition digital signals. In the preferred embodiment, the accuracy adopted by the Cameralink acquisition card is 8Bit, the highest sampling rate is 100MB/s, and the system bandwidth is 1 GB/s.
And the computer 8 is connected with the image acquisition processing system 7, records and stores video signals, and calculates the deviation of the aiming line and the cross target so as to obtain the tracking precision.
In this embodiment, when the measured photoelectric tracker 9 cannot provide a video interface, the measurement apparatus uses a high-speed camera to shoot a display of the measured photoelectric tracker, so as to shoot the deviation degree between the cross target and the aiming line in the image, and then calculates the actual deviation amount in cooperation with the magnification of the high-speed camera, so as to obtain the tracking accuracy. The CCD resolution of the high-speed camera is 2048 multiplied by 2048, and the CCD pixel size is 5 mu m; the focusing distance is 400mm, and the working distance is 0.3m to infinity.
The working principle of the invention is as follows: when measuring the tracking accuracy, the photoelectric tracker 9 is firstly erected in the light path, and the posture of the photoelectric tracker 9 is adjusted to enable the optical axes of the photoelectric tracker 9 and the optical alignment system 3 to be approximately superposed. The multispectral target 2 is irradiated by a laser light source or a visible light source of a channel two light source 1, so that a cross target is generated, the cross target is shaped into parallel light through a card type optical collimation system 3, the parallel light enters a measured photoelectric tracker 9 after being reflected by a two-dimensional quick reflector 4, and the measured photoelectric tracker 9 receives and aims at the cross target and enters a tracking state. The computer 8 is programmed to drive the two-dimensional fast reflector 4 to make scanning movement with a specified track, namely, the tracked cross target makes regular movement, so that the track of the far-field real space moving target is simulated vividly, the tested photoelectric tracker 9 carries out real-time tracking, the image acquisition processing system 7 acquires the video signal of the tested photoelectric tracker 9, and the deviation between the sight line and the cross target is calculated, so that the tracking precision is obtained.
When measuring the optical axis consistency, the first step:first, the deviation between the visible light axis and the laser axis is measured. The photoelectric tracker 9 is firstly erected in the light path, and the posture of the photoelectric tracker 9 is adjusted to enable the optical axes of the photoelectric tracker 9 and the optical alignment system 3 to be approximately overlapped. The multispectral target 2 is irradiated by a laser light source or a visible light source of the light source 1, so that a cross target is generated, the cross target is shaped into parallel light through the card type optical collimation system 3, and the parallel light enters the photoelectric tracker 9 to be measured after being reflected by the two-dimensional quick reflector 4. Aiming at the cross target of the multispectral target with the TV axis aiming line of the measured photoelectric tracker 9, emitting laser by the measured photoelectric tracker 9 laser range finder, converging the laser beam to the multispectral target 2 through the optical alignment system 3, imaging the multispectral target 2 by the short wave infrared camera 6, detecting the laser spot, and measuring the central position (x) of the laser spot by the short wave infrared camera 61,y1). The initial cross target center coordinates are (0, 0), and the parallelism of the laser axis and the television axis is calculated by the following formula:
wherein f is the focal length of the collimating optical system.
The second step: and then measuring the deviation of the infrared optical axis and the laser optical axis. The multispectral target 2 is heated by alloy wires to generate an infrared cross target, the infrared cross target is shaped into parallel light by an optical collimation system 3, and the parallel light enters a measured photoelectric tracker after being reflected by a two-dimensional quick reflector 4. Aiming the cross target of the multispectral target 2 by using the infrared thermal imager aiming line of the measured photoelectric tracker 9; then the laser is emitted by a laser range finder of a measured photoelectric tracker 9, the laser beam is converged to a multispectral target through an optical collimation system 3, a short wave infrared camera 6 images the multispectral target 2, a laser spot is detected, and the central position (x) of the laser spot is measured by the short wave infrared camera 62,y2) And calculating the parallelism of the laser optical axis and the infrared optical axis according to the following formula:
through the steps, the deviation between the visible light axis and the laser light axis and the deviation between the infrared light axis and the laser light axis are respectively measured, and the consistency of the visible light axis, the laser light axis and the infrared light axis can be calculated due to the measurement carried out in the same coordinate system.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A tracking precision measuring device based on a two-dimensional rapid control reflector is characterized by comprising: the device comprises a light source (1), a multispectral target (2), an optical collimation system (3), a two-dimensional fast reflector (4), an offner optical system (5), a short-wave infrared camera (6), an image acquisition and processing system (7), a computer (8) and a photoelectric tracker (9); light beams emitted by a light source (1) are obliquely incident to a multispectral target (2), are reflected by the multispectral target (2) and then are incident to an optical collimating system (3) through a turning reflector, and are reflected by a two-dimensional quick reflector (4) and then are incident to a photoelectric tracker (9); a laser range finder in the photoelectric tracker (9) emits laser beams, and the laser beams sequentially pass through a two-dimensional fast reflector (4), an optical collimation system (3), a turning reflector, a multispectral target (2) and an offner optical system (5) and are received by a short-wave infrared camera (6); the short wave infrared camera (6) and the photoelectric tracker (9) are connected with the image acquisition processing system (7), and the image acquisition processing system (7) acquires a video signal of the photoelectric tracker (9) to be detected and the central position of a laser spot of the short wave infrared camera (6); and the computer (8) is connected with the image acquisition processing system (7), records and stores video signals, and calculates the deviation between the sight line and the cross target so as to obtain the tracking precision.
2. The tracking precision measuring device based on the two-dimensional fast control reflector according to claim 1, characterized in that the light source (1) comprises a visible light source and a laser light source, the visible light source is used for illuminating the multispectral target (2) and forming a visible cross target after reflection; the laser light source provides a light spot target for the photoelectric tracker.
3. The device for measuring the tracking accuracy based on the two-dimensional fast control reflector according to claim 2, characterized in that the multispectral target (2) is a ZnS target plate, and a thermal resistance wire is arranged in the substrate of the ZnS target plate, so that the device can reflect laser light and visible light, can generate an infrared target by self-heating, and can transmit laser light, visible light and infrared light.
4. A two-dimensional fast steering mirror-based tracking accuracy measuring device according to claim 3, wherein said optical collimating system (3) is a coaxial reflecting system comprising a parabolic primary mirror and a hyperbolic secondary mirror.
5. The tracking accuracy measuring device based on the two-dimensional fast control reflector as claimed in claim 4, characterized in that said two-dimensional fast reflector (4) adopts voice coil motor driving type, the swing angle range of the two-dimensional fast reflector (4) is ± 30mrad, and 120mrad field of view is realized.
6. The two-dimensional fast steering mirror-based tracking accuracy measuring device according to claim 5, wherein the offner optical system (5) employs a triple-mirror system composed of two concentric spherical mirrors, in which the secondary mirror is a convex mirror and the one and three mirrors are common concave mirrors.
7. The two-dimensional fast steering mirror-based tracking accuracy measuring device according to claim 6, wherein the short wave infrared camera (6) and the optical collimating system (3) are combined to form a short wave infrared camera, and the short wave infrared camera (6) collects an image on the visible and infrared sensor surface of the photoelectric tracker to be measured and simultaneously obtains the laser spot emitted from the laser channel of the photoelectric tracker to be measured.
8. The apparatus for measuring tracking accuracy based on two-dimensional fast steering mirror according to claim 7, wherein the image acquisition processing system (7) comprises a multifunctional image acquisition card and a high-speed camera, and the acquisition card acquires PAL analog image signals and CameraLink high-definition digital signals at the same time by converting videos of different formats using a data interface conversion box, and the maximum sampling rate is 100 MB/s.
9. A tracking accuracy measuring method based on a two-dimensional fast control reflector based on the tracking accuracy measuring device of claim 8 is characterized in that when the tracking accuracy is measured, the photoelectric tracker (9) is firstly erected in the light path, and the posture of the photoelectric tracker (9) is adjusted to ensure that the optical axes of the photoelectric tracker (9) and the optical alignment system (3) are coincided; irradiating the multispectral target (2) by a laser light source or a visible light source of the light source (1) to generate a cross target, shaping the cross target into parallel light by the optical collimation system (3), reflecting the parallel light by the two-dimensional quick reflector (4), entering the measured photoelectric tracker (9), receiving and aiming the cross target by the measured photoelectric tracker (9), and entering a tracking state; the computer (8) drives the two-dimensional fast reflector (4) to make scanning movement with a specified track, the track of a far-field real space moving target is simulated, the measured photoelectric tracker (9) carries out real-time tracking, the image acquisition processing system (7) acquires video signals of the measured photoelectric tracker (9), and the computer (8) calculates the deviation between a sight line and a cross target, so that the tracking precision is obtained.
10. The two-dimensional fast steering mirror-based tracking accuracy measuring method according to claim 9, wherein when measuring the optical axis coincidence, the first step: firstly, measuring the deviation between a visible light optical axis and a laser optical axis, firstly erecting a photoelectric tracker (9) in a light path, and adjusting the posture of the photoelectric tracker (9) to ensure that the photoelectric tracker (9) is superposed with the optical axis of an optical alignment system (3); irradiating the multispectral target (2) by a laser or visible light source of the light source (1) to produce a targetThe cross target is shaped into parallel light through the card type optical collimation system (3), and enters the measured photoelectric tracker (9) after being reflected by the two-dimensional quick reflector (4); aiming at a cross target of a multispectral target by using a television axis aiming line of a measured photoelectric tracker (9), then emitting laser by a laser range finder of the measured photoelectric tracker (9), converging a laser beam to the multispectral target (2) through an optical alignment system (3), imaging the multispectral target (2) by a short-wave infrared camera (6), detecting a laser spot, and measuring the central position (x) of the laser spot by using the short-wave infrared camera (6)1,y1) The initial cross target center coordinates are (0, 0), and the parallelism of the laser axis and the television axis is calculated by the following formula:
wherein f is the focal length of the collimating optical system;
the second step is that: then measuring the deviation between the infrared optical axis and the laser optical axis
Heating by alloy wires on a multispectral target (2) to generate an infrared cross target, shaping the infrared cross target into parallel light by an optical collimation system (3), reflecting by a two-dimensional quick reflector (4) and then entering a measured photoelectric tracker; aiming the cross target of the multispectral target (2) by using the infrared thermal imager aiming line of the photoelectric tracker (9) to be detected; then a laser range finder of a measured photoelectric tracker (9) emits laser, the laser beam is converged to a multispectral target through an optical collimation system (3), a short-wave infrared camera (6) images the multispectral target (2), laser spots are detected, and the central position (x) of the laser spots is measured by the short-wave infrared camera (6)2,y2) And calculating the parallelism of the laser optical axis and the infrared optical axis according to the following formula:
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116929713A (en) * | 2023-08-28 | 2023-10-24 | 河南骞源电子科技有限公司 | Laser dynamic target simulation and aiming precision measurement equipment |
| CN117055208A (en) * | 2023-10-12 | 2023-11-14 | 北京瑞控信科技股份有限公司 | External closed loop beam pointing calibration device, method and quick reflection mirror system |
| CN117233735A (en) * | 2023-11-07 | 2023-12-15 | 北京瑞控信科技股份有限公司 | Optical calibration device and method for infrared reconnaissance alarm system |
-
2022
- 2022-05-05 CN CN202210482683.3A patent/CN114739428A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116929713A (en) * | 2023-08-28 | 2023-10-24 | 河南骞源电子科技有限公司 | Laser dynamic target simulation and aiming precision measurement equipment |
| CN117055208A (en) * | 2023-10-12 | 2023-11-14 | 北京瑞控信科技股份有限公司 | External closed loop beam pointing calibration device, method and quick reflection mirror system |
| CN117055208B (en) * | 2023-10-12 | 2023-12-29 | 北京瑞控信科技股份有限公司 | External closed loop beam pointing calibration device, method and quick reflection mirror system |
| CN117233735A (en) * | 2023-11-07 | 2023-12-15 | 北京瑞控信科技股份有限公司 | Optical calibration device and method for infrared reconnaissance alarm system |
| CN117233735B (en) * | 2023-11-07 | 2024-03-19 | 安徽瑞控信光电技术股份有限公司 | Optical calibration device and method for infrared reconnaissance alarm system |
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