An optical reference calibration method for fine tracking imaging coaxial conjugation

Abstract

The application relates to a fine tracking imaging coaxial conjugate optical reference calibration method, which comprises the following steps: adjusting a rotating table and a telescope barrel to rotate, recording the trajectory of visible guide light on an optical axis synchronous camera; calculating the center of the trajectory; taking the center of the trajectory as the center and taking the imaging distance corresponding to half the stroke of a quick reaction mirror on the optical axis synchronous camera as the radius to draw a circle on the optical axis synchronous camera; taking the center of the field of view of a visible light camera as a reference point O1 or taking the intersection of the line connecting the center of the field of view of the visible light camera and the center of the trajectory as the reference point O1; according to the reference point O1, the center of the field of view of the optical axis synchronous camera is drawn to the O1 point; the corresponding imaging position of the O1 point on the visible light camera is found out and recorded as an O2 point; the corresponding imaging position of the O2 point on an infrared camera is found out and recorded as an O3 point. The application does not need to rely on external equipment, the fine tracking calibration process is simple, the cost is low, the operation is convenient, and the target tracking point and the laser striking point can be ensured to be the same point.

Description

Technical Field

[0001] This application relates to the field of optical calibration technology, and in particular to an optical reference calibration method for coaxial conjugate precision tracking imaging. Background Technology

[0002] The beam control and directed emission system (BDS) is a crucial component of laser directed energy equipment. Its function is to acquire and stably track the target, then use an off-axis emission telescope to project a laser beam onto the target for destruction. The precision tracking imaging system is designed for accurate target tracking. The beam emission optics and precision tracking imaging optics employ a common optical path design, achieving a tracking accuracy of less than 10 μrad.

[0003] For example Figure 3 The precision tracking imaging system shown often consists of multiple optical tracking devices (such as precision tracking imagers), and each optical tracking device has its own tracking center and field of view. Therefore, common optical calibration methods require the use of external equipment, and generally external calibration or mathematical assurance will make the precision tracking calibration process more complicated, costly, inconvenient to operate, and difficult to ensure that the target tracking point and the laser strike point are the same point. Summary of the Invention

[0004] This application provides a method for calibrating a coaxial conjugate optical reference for precise tracking imaging, in order to improve the following technical problems:

[0005] Common optical calibration methods require external equipment and generally rely on external calibration or mathematical guarantees, which makes the fine tracking calibration process more complicated, costly, inconvenient to operate, and difficult to guarantee that the target tracking point and the laser strike point are the same point.

[0006] This application provides a method for calibrating a coaxial conjugate optical reference for fine tracking imaging, employing the following technical solution:

[0007] A method for coaxial conjugate optical reference calibration for precise tracking imaging is disclosed. The equipment includes a turntable, a tracking frame, an elevation axis frame, and a telescope. The tracking frame is rotatably mounted on the turntable with its rotation axis arranged vertically. The elevation axis frame is mounted on the tracking frame. The telescope is rotatably mounted on the elevation axis frame with its rotation axis arranged horizontally. A guiding light source and a filter are disposed within the turntable. The guiding light source is coaxially aligned with the main laser. The filter has two settings for passing visible or infrared guiding light, respectively. A camera assembly is mounted on the telescope. The camera assembly includes an infrared camera, an optical axis-synchronized camera, and a visible light camera. An optical path mirror group is disposed between the camera assembly and the guiding light source. The optical path mirror group is installed inside the tracking frame and the telescope. The optical path mirror group includes an electrically adjustable mirror and a fast-response mirror. The guiding light emitted by the guiding light source passes through the filter and is reflected or transmitted through the optical path mirror group to the camera assembly.

[0008] The optical reference calibration method includes the following steps:

[0009] Step 1: Turn on the guide light source and switch the filter. You can see the guide light passing through the filter and then being imaged sequentially on the optical axis synchronous camera and the visible light camera by the optical path mirror group.

[0010] Step 2: Adjust the rotation of the turntable and telescope, and record the trajectory of the visible guide light on the optical axis synchronous camera during the rotation. Adjust the electric lens to minimize the area of ​​the trajectory formed on the optical axis synchronous camera.

[0011] Step 3: Calculate the center of the trajectory circle. Using the center of the trajectory circle as the center and the imaging distance on the optical axis synchronous camera corresponding to half the stroke of the fast response mirror as the radius, draw a circle on the optical axis synchronous camera.

[0012] Step 4: If the field of view center of the optical axis synchronous camera is within the radius of the circle, take the field of view center of the visible light camera as the reference point O1; if the field of view center of the visible light camera is outside the radius of the circle, take the intersection of the line connecting the field of view center of the visible light camera and the center of the trajectory circle with the trajectory as the reference point O1.

[0013] Step 5: Based on the determined reference point O1, manipulate the fast-response mirror to pull the field of view center of the optical axis synchronization camera to point O1.

[0014] Step 6: Find the imaging position of point O1 on the visible light camera and record it as point O2. The visible light camera uses point O2 as the observation reference point.

[0015] Step 7: Switch the filter. The infrared guide light passes through the filter and then passes through the optical path mirror group to form images on the visible light camera and the infrared camera in sequence.

[0016] Step 8: Find the imaging position of point O2 on the infrared camera and record it as point O3. The infrared camera uses point O3 as the observation reference point.

[0017] Step nine: The position corresponding to point O1 is the laser strike reference point, point O2 is the precision tracking control center of the visible light camera, and point O3 is the precision tracking control center of the infrared camera. Align point O2 or O3 with the damaged part of the target, and the precision tracking control center will be the strike point when striking.

[0018] Optionally, in step two, one cycle of adjusting the turntable rotation is from 0° to 360°, and one cycle of adjusting the telescope is from 0° to 85°.

[0019] Optionally, in the equipment used, the tracking frame is provided with a Cood optical path, and the telescope tube is provided with a conjugate calibration optical path for the camera assembly.

[0020] Optionally, the optical path mirror assembly includes: a first mirror, a second mirror, a third mirror, a fourth mirror, and a fifth mirror installed in the tracking frame, and a sixth mirror, a seventh mirror, an eighth mirror, a ninth mirror, and a tenth mirror installed in the telescope tube;

[0021] As can be seen, the guide light is reflected sequentially through the first mirror, the second mirror, the third mirror, the fourth mirror, the fifth mirror, the sixth mirror, the seventh mirror, the eighth mirror, and the ninth mirror to the optical axis synchronization camera;

[0022] The visible light guide light is reflected sequentially through the first mirror, the second mirror, the third mirror, the fourth mirror, the fifth mirror, the sixth mirror, and the seventh mirror, and then transmitted through the eighth mirror and reflected by the tenth mirror before reaching the visible light camera.

[0023] The infrared guiding light is reflected sequentially through the first mirror, the second mirror, the third mirror, the fourth mirror, the fifth mirror, the sixth mirror, and the seventh mirror, and then transmitted sequentially through the eighth mirror and the tenth mirror to the infrared camera;

[0024] The infrared guiding light is reflected sequentially through the first mirror, the second mirror, the third mirror, the fourth mirror, the fifth mirror, the sixth mirror, and the seventh mirror, and then transmitted through the eighth mirror and reflected by the tenth mirror before reaching the visible light camera.

[0025] Optionally, the first mirror, the third mirror, the fifth mirror, and the ninth mirror are all electrically adjustable mirrors. The electrically adjustable mirrors can be adjusted by sending commands to change the path of light. The adjustment frequency of the electrically adjustable mirrors is 60Hz.

[0026] In step two, after the turntable rotates for one cycle, the first mirror, which is used for motorized mirror adjustment, is immediately adjusted; after the turntable rotates for one cycle, the fifth mirror, which is used for motorized mirror adjustment, is immediately adjusted.

[0027] Optionally, the seventh mirror is a fast-response mirror and can be adjusted at high frequencies, with the adjustment frequency of the fast-response mirror being 500Hz.

[0028] Optionally, the second mirror, the fourth mirror, and the sixth mirror are fixed mirrors.

[0029] Optionally, the eighth and tenth mirrors are both high-reflection lenses, which can reflect part of the light and transmit part of the light. Both high-reflection lenses are electrically adjustable with an adjustment frequency of 60Hz.

[0030] Optionally, the rotational speed of the turntable is greater than 2 r / s, and the rotational accuracy of the turntable is greater than 5°; the rotational speed of the telescope is greater than 2 r / s, and the rotational accuracy of the telescope is greater than 1°.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] The optical axis synchronous camera is coaxial with the main laser optical path and serves as the observation camera for laser strikes. The visible light camera serves as the tracking camera of the fine tracking system, mainly for accurately tracking the target area. It generally works better when there is sufficient light. The infrared camera serves as the tracking camera of the fine tracking system, mainly for accurately tracking the target area. It generally works better when used at night.

[0033] It can ensure that the target tracking point and the laser strike point are the same point. The calibration method is relatively simple and does not require external equipment, which simplifies the fine tracking calibration process and reduces costs. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a flowchart illustrating a method for calibrating a coaxial conjugate optical reference for fine tracking imaging, according to an embodiment of this application.

[0036] Figure 2 This is a schematic diagram of the equipment used in the optical reference calibration method in the embodiments of this application.

[0037] Figure 3This is a schematic diagram of the optical path of the device used in the optical reference calibration method in the embodiments of this application.

[0038] Figure 4 This is a schematic diagram of the optical path for emission and the optical path for fine tracking imaging in a tracking aiming system in related technologies.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Turntable; 2. Tracking frame; 3. Pitch axis frame; 4. Telescope; 5. Guide light source; 6. Filter; 7. Infrared camera; 8. Optical axis synchronous camera; 9. Visible light camera; 101. First lens; 102. Second lens; 103. Third lens; 104. Fourth lens; 105. Fifth lens; 106. Sixth lens; 107. Seventh lens; 108. Eighth lens; 109. Ninth lens; 110. Tenth lens. Detailed Implementation

[0041] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0046] This application discloses a method for calibrating a coaxial conjugate optical reference for fine-tracking imaging. (Refer to...) Figures 1 to 3 A method for coaxial conjugate optical reference calibration for precise tracking imaging is disclosed. The equipment used includes: a turntable 1, a tracking frame 2, a pitch axis frame 3, and a telescope tube 4. The tracking frame 2 is rotatably mounted on the turntable 1 with its rotation axis arranged vertically. The pitch axis frame 3 is mounted on the tracking frame 2. The telescope tube 4 is rotatably mounted on the pitch axis frame 3 with its rotation axis arranged horizontally. A guide light source 5 and a filter 6 are provided inside the turntable 1. The guide light source 5 is coaxially aligned with the main laser. The filter 6 has two settings for passing visible guide light or infrared guide light, respectively. A camera assembly is mounted on the telescope tube 4. The camera assembly includes an infrared camera 7, an optical axis synchronous camera 8, and a visible light camera 9. An optical path mirror group is provided between the camera assembly and the guide light source 5. The optical path mirror group is installed inside the tracking frame 2 and the telescope tube 4. The optical path mirror group includes an electrically adjustable mirror and a fast-response mirror. The guide light emitted by the guide light source 5 is reflected or transmitted to the camera assembly through the optical path mirror group after passing through the filter 6.

[0047] The optical reference calibration method includes the following steps:

[0048] Step 1: Turn on the guide light source 5, switch the filter 6, and the visible guide light passes through the filter 6. The visible guide light passes through the optical path mirror group and is imaged on the optical axis synchronous camera 8 and the visible light camera 9 in sequence.

[0049] Step 2: Adjust the rotation of turntable 1 and telescope 4. During the rotation, record the trajectory of the visible guide light on the optical axis synchronous camera 8. Adjust the electric lens to minimize the area of ​​the trajectory formed on the optical axis synchronous camera 8.

[0050] Step 3: Calculate the center of the trajectory circle. Using the center of the trajectory circle as the center and the imaging distance on the optical axis synchronous camera 8 corresponding to half the stroke of the fast-response mirror as the radius, draw a circle on the optical axis synchronous camera 8.

[0051] Step 4: If the field of view center of the optical axis synchronization camera 8 is within the radius of the circle, take the field of view center of the visible light camera 9 as the reference point O1; if the field of view center of the visible light camera 9 is outside the radius of the circle, take the intersection of the line connecting the field of view center of the visible light camera 9 and the center of the trajectory circle with the trajectory as the reference point O1.

[0052] Step 5: Based on the determined reference point O1, manipulate the fast-response mirror to pull the field of view center of the optical axis synchronization camera 8 to point O1.

[0053] Step 6: Find the imaging position of point O1 on the visible light camera 9 and record it as point O2. The visible light camera 9 uses point O2 as the observation reference point.

[0054] Step 7: Switch filter 6. The infrared guide light passes through filter 6 and then passes through the optical path mirror group to form images on the visible light camera 9 and the infrared camera 7 in sequence.

[0055] Step 8: Find the imaging position of point O2 on infrared camera 7 and record it as point O3. Infrared camera 7 uses point O3 as the observation reference point.

[0056] Step 9: The position corresponding to point O1 is the laser strike reference point, point O2 is the precision tracking control center of the visible light camera 9, and point O3 is the precision tracking control center of the infrared camera 7. Align point O2 or point O3 with the damaged part of the target, and the precision tracking control center will be the strike point when striking.

[0057] Specifically, in step two, one cycle of adjusting the turntable 1 is from 0° to 360°, and one cycle of adjusting the telescope tube 4 is from 0° to 85°.

[0058] Specifically, in the equipment used, the tracking frame 2 is equipped with a Cood optical path, and the telescope tube 4 is equipped with a conjugate calibration optical path for the camera assembly.

[0059] Specifically, the optical path mirror assembly includes: a first mirror 101, a second mirror 102, a third mirror 103, a fourth mirror 104 and a fifth mirror 105 installed in the tracking frame 2, and a sixth mirror 106, a seventh mirror 107, an eighth mirror 108, a ninth mirror 109 and a tenth mirror 110 installed in the telescope tube 4.

[0060] As can be seen, the guide light is reflected sequentially through the first mirror 101, the second mirror 102, the third mirror 103, the fourth mirror 104, the fifth mirror 105, the sixth mirror 106, the seventh mirror 107, the eighth mirror 108 and the ninth mirror 109 into the optical axis synchronization camera 8;

[0061] The visible guide light is reflected sequentially through the first mirror 101, the second mirror 102, the third mirror 103, the fourth mirror 104, the fifth mirror 105, the sixth mirror 106, and the seventh mirror 107, and then transmitted through the eighth mirror 108 and reflected by the tenth mirror 110 to the visible light camera 9.

[0062] The infrared guiding light is reflected sequentially through the first mirror 101, the second mirror 102, the third mirror 103, the fourth mirror 104, the fifth mirror 105, the sixth mirror 106, and the seventh mirror 107, and then transmitted sequentially through the eighth mirror 108 and the tenth mirror 110 to the infrared camera 7.

[0063] The infrared guiding light is reflected sequentially through the first mirror 101, the second mirror 102, the third mirror 103, the fourth mirror 104, the fifth mirror 105, the sixth mirror 106, and the seventh mirror 107, and then transmitted through the eighth mirror 108 and reflected by the tenth mirror 110 to the visible light camera 9.

[0064] Specifically, the first mirror 101, the third mirror 103, the fifth mirror 105, and the ninth mirror 109 are all motorized mirrors. The motorized mirrors can be adjusted by sending commands to change the path of light. The adjustment frequency of the motorized mirrors is 60Hz.

[0065] In step two, after the turntable 1 rotates for one cycle, the first mirror 101, which is used for electric adjustment, is immediately adjusted; after the turntable 1 rotates for one cycle, the fifth mirror 105, which is used for electric adjustment, is immediately adjusted.

[0066] Specifically, the seventh mirror 107 is a fast-response mirror and can be adjusted at high frequencies. The adjustment frequency of the fast-response mirror is 500Hz.

[0067] Specifically, the second mirror 102, the fourth mirror 104, and the sixth mirror 106 are fixed mirrors.

[0068] Specifically, the eighth lens 108 and the tenth lens 110 are both high-reflection high-lens lenses. High-reflection high-lens lenses can reflect part of the light and transmit part of the light. Both high-reflection high-lens lenses are electrically adjustable and the adjustment frequency is 60Hz.

[0069] Specifically, to ensure stable and accurate operation of the equipment, the rotational speed of turntable 1 is greater than 2 r / s, and the rotational accuracy of turntable 1 is greater than 5°; the rotational speed of telescope 4 is greater than 2 r / s, and the rotational accuracy of turntable 1 is greater than 1°.

[0070] The beneficial technical effects of the coaxial conjugate optical reference calibration method for fine tracking imaging according to the embodiments of this application are roughly as follows:

[0071] The optical axis synchronization camera 8 is coaxial with the main laser optical path and serves as the observation camera for laser strikes. The visible light camera 9 serves as the tracking camera of the fine tracking system, mainly for accurately tracking the target area. It generally works better when there is sufficient light. The infrared camera 7 serves as the tracking camera of the fine tracking system, mainly for accurately tracking the target area. It generally works better when used at night.

[0072] It can ensure that the target tracking point and the laser strike point are the same point. The calibration method is relatively simple and does not require external equipment, which simplifies the fine tracking calibration process and reduces costs.

[0073] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for calibrating a coaxial conjugate optical reference for precise tracking imaging, characterized in that, The equipment used includes: a turntable (1), a tracking frame (2), a pitch axis frame (3), and a telescope (4). The tracking frame (2) is rotatably mounted on the turntable (1) with its rotation axis arranged vertically. The pitch axis frame (3) is mounted on the tracking frame (2). The telescope (4) is rotatably mounted on the pitch axis frame (3) with its rotation axis arranged horizontally. A guide light source (5) and a filter (6) are provided inside the turntable (1). The guide light source (5) is coaxial with the main laser. The filter (6) has two settings and is used to pass through the main laser. Visible or infrared guiding light; a camera assembly is installed on the telescope tube (4), which includes an infrared camera (7), an optical axis synchronous camera (8), and a visible light camera (9); an optical path mirror group is provided between the camera assembly and the guiding light source (5); the optical path mirror group is installed inside the tracking frame (2) and the telescope tube (4); the optical path mirror group includes an electric adjustment mirror and a fast response mirror; the guiding light emitted by the guiding light source (5) passes through the filter (6) and is reflected or transmitted through the optical path mirror group to the camera assembly; The optical reference calibration method includes the following steps: Step 1: Turn on the guide light source (5), switch the filter (6), and the guide light can be seen passing through the filter (6). The guide light can be seen passing through the optical path mirror group and forming images on the optical axis synchronous camera (8) and the visible light camera (9) in sequence. Step 2: Adjust the rotation of the turntable (1) and the telescope (4). During the rotation, record the trajectory of the visible guide light on the optical axis synchronous camera (8). Adjust the electric lens to minimize the area of ​​the trajectory formed on the optical axis synchronous camera (8). Step 3: Calculate the center of the trajectory. Using the center of the trajectory as the center and the imaging distance on the optical axis synchronous camera (8) corresponding to half the travel of the fast-response mirror as the radius, draw a circle on the optical axis synchronous camera (8). Step 4: If the field of view center of the optical axis synchronous camera (8) is within the radius of the circle, take the field of view center of the visible light camera (9) as the reference point O1; if the field of view center of the visible light camera (9) is outside the radius of the circle, take the intersection of the line connecting the field of view center of the visible light camera (9) and the center of the trajectory circle with the trajectory as the reference point O1. Step 5: Based on the determined reference point O1, manipulate the fast-response mirror to pull the field of view center of the optical axis synchronization camera (8) to point O1. Step 6: Find the imaging position of point O1 on the visible light camera (9) and record it as point O2. The visible light camera (9) takes point O2 as the observation reference point. Step 7: Switch the filter (6). The infrared guide light passes through the filter (6) and is imaged on the visible light camera (9) and the infrared camera (7) in sequence through the optical path mirror group. Step 8: Find the imaging position of point O2 on the infrared camera (7) and record it as point O3. The infrared camera (7) takes point O3 as the observation reference point. Step 9: The position corresponding to point O1 is the laser strike reference point, point O2 is the precision tracking control center of the visible light camera (9), and point O3 is the precision tracking control center of the infrared camera (7). Align point O2 or point O3 with the damaged part of the target, and the precision tracking control center will be the strike point when striking.

2. The optical reference calibration method for coaxial conjugate precision tracking imaging according to claim 1, characterized in that, In step two, one cycle of the rotation of the turntable (1) is from 0° to 360°, and one cycle of the rotation of the telescope (4) is from 0° to 85°.

3. The optical reference calibration method for coaxial conjugate precision tracking imaging according to claim 2, characterized in that, In the equipment used, the tracking frame (2) is provided with a Cood optical path, and the telescope tube (4) is provided with a conjugate calibration optical path for the camera assembly.

4. The optical reference calibration method for coaxial conjugate precision tracking imaging according to claim 3, characterized in that, The optical path mirror assembly includes: a first mirror (101), a second mirror (102), a third mirror (103), a fourth mirror (104), and a fifth mirror (105) installed in the tracking frame (2), and a sixth mirror (106), a seventh mirror (107), an eighth mirror (108), a ninth mirror (109), and a tenth mirror (110) installed in the telescope tube (4); The guide light is reflected sequentially through the first mirror (101), the second mirror (102), the third mirror (103), the fourth mirror (104), the fifth mirror (105), the sixth mirror (106), the seventh mirror (107), the eighth mirror (108), and the ninth mirror (109) into the optical axis synchronization camera (8); The visible light guide light is reflected sequentially through the first mirror (101), the second mirror (102), the third mirror (103), the fourth mirror (104), the fifth mirror (105), the sixth mirror (106), and the seventh mirror (107), and then transmitted through the eighth mirror (108) and reflected by the tenth mirror (110) into the visible light camera (9); The infrared guiding light is reflected sequentially through the first mirror (101), the second mirror (102), the third mirror (103), the fourth mirror (104), the fifth mirror (105), the sixth mirror (106), and the seventh mirror (107), and then transmitted sequentially through the eighth mirror (108) and the tenth mirror (110) to the infrared camera (7); The infrared guiding light is reflected sequentially through the first mirror (101), the second mirror (102), the third mirror (103), the fourth mirror (104), the fifth mirror (105), the sixth mirror (106), and the seventh mirror (107), and then transmitted through the eighth mirror (108) and reflected by the tenth mirror (110) into the visible light camera (9).

5. The optical reference calibration method for coaxial conjugate precision tracking imaging according to claim 4, characterized in that, The first mirror (101), the third mirror (103), the fifth mirror (105), and the ninth mirror (109) are all electrically adjustable mirrors. The electrically adjustable mirrors can change the path of light by sending commands to adjust their angles. The adjustment frequency of the electrically adjustable mirrors is 60Hz. In step two, after the adjustment turntable (1) rotates for one cycle, the first mirror (101), which is used for electric adjustment, is immediately adjusted; after the adjustment turntable (1) rotates for one cycle, the fifth mirror (105), which is used for electric adjustment, is immediately adjusted.

6. The optical reference calibration method for coaxial conjugate precision tracking imaging according to claim 4, characterized in that, The seventh mirror (107) is a fast-response mirror and can be adjusted at high frequencies. The adjustment frequency of the fast-response mirror is 500Hz.

7. The optical reference calibration method for coaxial conjugate precision tracking imaging according to claim 4, characterized in that, The second mirror (102), the fourth mirror (104), and the sixth mirror (106) are fixed mirrors.

8. The optical reference calibration method for coaxial conjugate precision tracking imaging according to claim 4, characterized in that, The eighth mirror (108) and the tenth mirror (110) are both high-reflection lenses. The high-reflection lenses can reflect part of the light and transmit part of the light. The high-reflection lenses are both electrically adjustable and the adjustment frequency is 60Hz.

9. The optical reference calibration method for coaxial conjugate precision tracking imaging according to claim 1, characterized in that, The rotational speed of the turntable (1) is greater than 2 r / s, and the rotational accuracy of the turntable (1) is greater than 5°; the rotational speed of the telescope (4) is greater than 2 r / s, and the rotational accuracy of the telescope (4) is greater than 1°.

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