CN111071477B

CN111071477B - Target plate device, target correcting system and HUD target correcting method

Info

Publication number: CN111071477B
Application number: CN201911368646.4A
Authority: CN
Inventors: 郭冕; 鞠彦伟; 龚水朋
Original assignee: Beijing Runke General Technology Co Ltd
Current assignee: Beijing Runke General Technology Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2022-03-25
Anticipated expiration: 2039-12-26
Also published as: CN111071477A

Abstract

The application discloses target plate device, school target system and HUD school target method, target plate device includes two target plates of position adjustable, school target system includes above-mentioned target plate device, set up in the image acquisition device of mark object position place position and be connected with image acquisition device, can confirm school target data according to target plate image and the position data of target plate, school target in-process, obtain the position data of target plate in the target plate device and the target plate image that image acquisition device gathered, then confirm deviation data according to the position data of target plate and the data information who obtains from the target plate image, further confirm school target action data according to deviation data. According to the HUD boresighting method realized by the boresighting system, the airplane does not need to be leveled in the HUD boresighting process, the boresighting process is reduced, and the boresighting efficiency of the airplane HUD is improved.

Description

Target plate device, target correcting system and HUD target correcting method

Technical Field

The invention relates to a calibration technology, in particular to a target plate device, a target calibration system and a HUD target calibration method.

Background

Usually, a Head Up Display (HUD) is respectively installed at the primary and secondary piloting positions of the civil aircraft, and when a pilot keeps a Head-Up state, instrument parameters and an external visual reference object can be considered in the same visual field through the HUD, so that the flight of the aircraft can be better controlled. In order to ensure the accuracy of the HUD display content, it needs to be calibrated when the HUD is installed.

The general method of HUD school target is to place a target board in the aircraft front portion to look aim at appearance or laser lamp through the frock installation on the HUD mount, before the school target begins, need with the aircraft leveling, then adjust through the spirit level and make the target board vertical, and move target board center to the aircraft axis on, look the deviation at aim at appearance center or laser point and target board center through the observation at last, and then constantly adjust the HUD mount in order to reduce this deviation. However, the implementation process of the method is complicated and requires a large amount of manpower and material resources.

Disclosure of Invention

In view of this, the invention provides a target plate device, a target calibration system and a HUD target calibration method, so as to realize rapid and convenient HUD target calibration of an airplane.

In order to achieve the purpose, the invention provides the following technical scheme:

a target plate apparatus comprising:

the two target plates are provided with cross-shaped scribed lines and connected onto the rotary base through telescopic rods;

the rotary base is also provided with a collimating mirror, the lens of the collimating mirror faces towards a calibration object, and the axial direction of the collimating mirror is vertical to the plane where the two target plates with the cross reticle are located;

the connecting line of the centers of the two cross scribed lines on the two target plates with the cross scribed lines is parallel to the cross differentiation horizontal line on the lens of the collimating mirror;

the rotating base is rotatably arranged on the supporting frame.

Optionally, the method further includes:

and the laser range finder is arranged on the rotating base.

Optionally, the telescopic rod is connected with the rotatable base through a sliding bearing.

Optionally, a locking device for limiting the position of the rotating base is arranged on the rotating base.

A boresight system, includes any one above-mentioned target plate device, still includes:

the image acquisition device is arranged on the HUD fixing frame and is used for acquiring image information of a target plate in the target plate device;

and the terminal is communicated with the image acquisition device and is used for receiving the image information of the target plate acquired by the image acquisition device, acquiring data information from the image information and determining target calibration data according to the data information and the position data of the target plate.

Optionally, the image capturing device includes a telephoto lens and a camera device, and the telephoto lens has a focal length greater than the first distance.

A HUD boresight method is applied to any one of the boresight systems, and comprises the following steps:

acquiring position data of a target plate in a target plate device;

acquiring image information of a target plate acquired by an image acquisition device;

acquiring data information from the image information;

determining deviation data according to the position data and the data information of the target plate;

and determining the target correcting action data according to the deviation data.

Optionally, before the HUD boresighting method is executed, the target plate device is in an initial state, where the initial state includes: the symmetry axes of the two target plates are positioned on the plane where the yaw axis and the roll axis of the calibration object are positioned, the distance between the central points of the cross-shaped scribed lines of the two target plates is the same as the central distance between the two HUDs on the calibration object, and the connecting line of the central points of the cross-shaped scribed lines of the two target plates is parallel to the pitch axis of the calibration object.

Optionally, the acquiring position data of the target plate in the target plate device includes:

and acquiring a first distance between the target plate and the HUD fixing frame on the calibration object in the target plate device and a first height of the target plate.

Optionally, the determining deviation data according to the position data of the target plate and the data information includes:

identifying cross-shaped scribed lines of the target plate in the target plate image;

determining the angular deviation of the cross reticle and the X axis of the target plate image and the deviation amount of the central point of the cross reticle and the center of the target plate image;

and calculating and determining pitch deviation data, yaw deviation data and roll deviation data of the calibration object according to the first distance, the first height, the angle deviation and the offset.

According to the technical scheme, compared with the prior art, the embodiment of the invention discloses a target plate device, a target correcting system and a HUD (head Up display) target correcting method, wherein the target plate device comprises two target plates with adjustable positions, the target correcting system comprises the target plate device, an image acquisition device arranged at the position of a calibration object and a target plate position data acquisition device connected with the image acquisition device, and can determine target correcting data according to target plate images and the target plate position data, in the target correcting process, the target plate position data in the target plate device and the target plate images acquired by the image acquisition device are acquired, then deviation data are determined according to the target plate position data and the data information acquired from the target plate images, and further target correcting action data are determined according to the deviation data. According to the HUD boresighting method realized by the boresighting system, the airplane does not need to be leveled in the HUD boresighting process, the boresighting process is reduced, and the boresighting efficiency of the airplane HUD is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a target plate apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a partial structure of another target plate apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a target plate assembly in a folded state according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a boresight system according to an embodiment of the present disclosure;

FIG. 5 is a flow chart of a HUD boresight method according to an embodiment of the present invention;

FIG. 6 is a schematic view of an aircraft and target board arrangement according to an embodiment of the present invention in an initial state;

FIG. 7 is a flowchart illustrating a method for determining deviation data of a calibration object according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram showing the relationship between the height of the target plate from the ground and other data;

FIG. 9 is a view of a collimating mirror initially observing the state of the aircraft;

FIG. 10 is a view of the collimating mirror with the horizontal axis of the target plate parallel to the pitch axis of the aircraft;

FIG. 11 is a view of a collimating mirror with its axes of symmetry positioned in the plane of the aircraft yaw axis, i.e., roll axis;

fig. 12 is a schematic diagram of an image of a target board captured by the image capturing device according to the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of a target plate device according to an embodiment of the present invention, and referring to fig. 1, the target plate device may include: two target plates 11 with cross-shaped scribed lines are connected on a rotating base 14 through telescopic rods 12. The rotary base 14 is further provided with a collimating mirror 15, a lens of the collimating mirror 15 faces the calibration object, and the axial direction of the collimating mirror 15 is perpendicular to the plane where the two target plates with the cross reticle are located. The rotating base 14 is rotatably disposed on the supporting frame 16. In the use state, the central connecting line of the two cross scribed lines on the two target plates with the cross scribed lines is parallel to the cross differentiation horizontal line on the lens of the collimating mirror, and the two target plates 11 are symmetrical relative to the axis of the support frame 16.

Wherein, two target boards 11 can be connected on the rotating base 14 through a telescopic link 12 respectively, also can set up respectively at the both ends of a telescopic link that runs through rotating base 14 inside.

Above-mentioned target plate device can regard as the target plate of the school target work of aircraft head-up display HUD, because one HUD is respectively installed to the common main and auxiliary pilotage of civil aircraft, consequently HUD school target work need all proofread the target to two HUDs of main and auxiliary pilotage, and in this application, the target plate device that corresponds includes two target plates that have the cross reticle, and a target plate corresponds a HUD.

In a specific application, the heights of the two target plates 11 should be the same, i.e., the centers of the cross-shaped scribe lines of the two target plates 11 are on the same horizontal straight line. The distance between the centers of the cross-shaped scribed lines on the two target plates 11 can be adjusted to be the same as the distance between the centers of the two HUDs in the main and auxiliary piloting positions on the airplane by adjusting the telescopic rods 12; in the specific adjustment process, the distance value between the centers of two HUDs of a main pilot position and a secondary pilot position on the airplane can be measured and determined at first, and then the telescopic rods 12 connecting the two target plates 11 are adjusted according to the determined distance value, so that the distance between the centers of the cross scribed lines on the two target plates 11 is equal to the distance value; when the center distance of the two 11 cross scribed lines of target plate is equal to the center distance of two HUDs in the main and auxiliary driving position, the telescopic rod can be fixed by the locking nut on the telescopic rod 12, and the position of the telescopic rod 12 can not be changed during normal operation.

The collimating mirror 15 is mounted on the rotating base 14 and can rotate along with the rotating base 14.

The rotating base 14 can rotate in any direction through the spherical outside bearing, and in the using process, after the rotating base 14 is adjusted to a proper position, the rotating base 14 can be locked through the locking device 18. Specifically, the locking of the rotating base 14 can be realized by rotating and pressing an outer spherical bearing inside the rotating base 14 through a locking bolt arranged on the rotating base 14. Of course, any conventional locking device may be used to lock the rotation base 14, in addition to the above-described locking structure.

Wherein, the supporting frame 16 can be extended and contracted to adjust the height of the target plate 11. The main shaft of the supporting frame 16 may be provided with a reticle so that the user can quickly check the height of the center of the target plate 11 from the ground.

Optionally, a handle may be provided on the rotating base 14 to facilitate control of the rotation of the rotating base. Target plate device, simple structure, the user of being convenient for uses, is applied to aircraft HUD school target work with it, can effectively promote school target work efficiency.

In other implementations, the target plate arrangement may further include a laser range finder 17 mounted on the rotating base 14 for measuring distance, the laser range finder 17 may be used to assist in controlling the placement of the target plate arrangement in the exact location of the front of the aircraft. During application, the laser range finder 17 can be detachably mounted on the rotating base 14 through a nut and rotate along with the rotating base 14. The laser axis emitted by the laser range finder 17 should be parallel to the axis of the collimating mirror 15 to ensure the accuracy of the measured distance. Observe through collimating mirror 15 to rotatory rotating base 14 aims the HUD position, and laser range finder 17 just can measure target plate 11 to image acquisition device's distance, confirms this distance after, just can carry out size calculation to the image that image acquisition device shot subsequently. Fig. 2 is a partial schematic structural view of another target plate device according to an embodiment of the present invention, which can be understood by referring to fig. 2.

In other implementations, when two target plates with cross-shaped scribed lines are connected to the rotating base through a telescopic rod respectively, a sliding bearing or a pin shaft can be added between the telescopic rod 12 and the rotating base 14 to realize the folding function of the two target plates 11, and in the concrete implementation, the rotating shaft 13 can include a sliding bearing, and the telescopic rod 12 is connected to the sliding bearing, so that the target plates 11 can be in an open state and a folded state. Thus, when not in use, the rotating shaft 13 for fixing the target plate 11 can be folded for carrying and transportation. When the target board device is in a folded state, the telescopic rod 12 of the target board 11 is in a contracted state, and the rotating shaft 13 is folded in a rotating manner through the sliding bearing. Fig. 3 is a schematic structural diagram of a target plate device in a folded state according to an embodiment of the present invention, which can be understood by referring to fig. 3.

In other implementations, the rotating base 14 is provided with a locking device 16 for defining the position of the rotating base. The locking device 18 is used to lock the rotating base 14 to fix the target plate 11 in place.

Fig. 4 is a schematic structural diagram of a boresight system according to an embodiment of the present invention, and referring to fig. 4, the boresight system may include: any of the target plate arrangements 10 described in the above embodiments; the image acquisition device 20 is arranged on the HUD fixing frame, and the image acquisition device 20 is used for acquiring the image information of the target plate 11 in the target plate device 10; the system further comprises a terminal 30 which is communicated with the image acquisition device 20, wherein the terminal 30 is used for receiving the image of the target plate acquired by the image acquisition device 20, acquiring data information from the image information and determining the target calibration data according to the data information and the position data of the target plate.

The terminal 30 may be any electronic device having a data processing function, such as a desktop computer, a notebook computer, and various portable handheld terminals.

It should be noted that, in practical application, to mark the object and be the aircraft as an example, image acquisition device 20 can pass through on frock installation HUD mount to the aircraft, has not installed HUD on the aircraft this moment, at the school target in-process, can adjust the position of HUD mount according to the testing result at any time, after the position of last HUD mount satisfies the required precision, again with HUD direct mount on the HUD mount.

The image acquisition device 20 can transmit the shot target plate image to the terminal 30, and then the terminal 30 is used as a core processing unit for automatic measurement, and acquires and calculates error information of each parameter of the calibration object to obtain calibration data, wherein the calibration data is used for indicating a user how to adjust the HUD fixing frame. Wherein the error information may include, but is not limited to, a yaw error, a pitch error, and a roll angle error of the calibration object. The data transmission between the image capturing device 20 and the terminal 30 may be implemented based on a wired data path, or may be implemented based on a wireless network.

The position data of the target plate can be, but is not limited to, the height of the target plate (specifically, the distance from the center of the cross reticle of the target plate to the ground) and the distance from the target plate to the position of the calibration object (HUD holder). The height of the target plate can be determined by the scales on the main shaft of the telescopic support frame in the above embodiment, and the distance from the target plate to the position of the calibration object can be determined by the laser range finder in the above embodiment. These data may be entered manually into the terminal.

The formation of boresight system is succinct clear and definite, through mutually supporting of its each part, can convenient and fast carry out aircraft HUD boresight work, and the in-process need not carry out the leveling operation with the aircraft, can save a large amount of manpowers and time resource.

Since the precision required for the calibration is generally high, in the above embodiment, the image capturing device 20 needs to be able to obtain a relatively clear image of the target plate. In one particular implementation, the image capture device 20 may include a telephoto lens and a camera device; in consideration of the specific application scenario of the present application, the image capturing device 20 needs to capture images at a longer distance, and therefore the telephoto lens is a lens having a focal length greater than the first distance.

Fig. 5 is a flowchart of a HUD boresight method according to an embodiment of the present invention, where the HUD boresight method is implemented based on the boresight system disclosed in the above embodiment, and an execution subject of the HUD boresight method may be a terminal in the boresight system described in the above embodiment. As shown in fig. 5, the HUD boresight method may include:

step 501: position data of a target plate in a target plate device is acquired.

Wherein the position data of the target board may include, but is not limited to, the distance between the target board and the HUD mount on the airplane and the height of the target board center from the ground. Thus, obtaining position data of the target plate in the target plate arrangement may comprise: the method comprises the steps of obtaining a first distance between a target plate in a target plate device and a HUD fixing frame on an airplane and a first height of the target plate.

The position data can be manually input into the terminal by related staff, so that the terminal can perform subsequent related processing and calculation according to the data.

Step 502: the image information of the target plate acquired by the image acquisition device 20 is acquired.

The image information of the target plate needs to include a clear and complete target plate to determine accurate error data.

The terminal acquires the target plate image acquired by the image acquisition device and can acquire the target plate image through a data path in wired connection, such as a pure data transmission line and a network line with a data transmission function; or may be acquired through a wireless transmission path, such as a wireless network, a bluetooth connection path, etc.

Step 503: and acquiring data information from the image information.

The data information may include, but is not limited to, angular information of the cross reticle of the target plate, offset positions of the centers of the cross reticle from the center point of the image of the target plate, and the like.

Step 504: and determining deviation data according to the position data of the target plate and the data information.

It should be noted that, determining the deviation data cannot be directly determined from the target plate image, but needs to identify the cross reticle of the target plate in the target plate image, determine the relative position relationship between the central point of the image of the target plate image acquired by the image acquisition device and the cross reticle, and determine the deviation data of the calibration object by geometric calculation in combination with the position data.

Through image recognition, a cross reticle on the target plate image is captured, and the distance between the center of the cross reticle and the image center and the included angle between the reticle and the horizontal plane, namely the relative position and the angle deviation between the HUD fixing frame and the axis of the airplane are calculated.

Step 505: and determining the target correcting motion data according to the deviation data.

After the deviation data is determined, target calibration data capable of guiding relevant workers to carry out target calibration can be further determined. For example, the deviation data indicates that the central point of the target plate image is located at the upper right side of the center of the cross-shaped target reticle of the target plate, the corresponding target calibration action data should be that the HUD fixing frame is adjusted towards the lower left direction, and the principle is that the central point of the target plate image is as close as possible to the central point of the cross-shaped target reticle of the target plate until the target calibration precision requirement is met.

In the embodiment, the HUD boresighting method is realized according to the boresighting system disclosed by the embodiment, the aircraft does not need to be leveled any more in the HUD boresighting process, a large amount of manpower and material resources are saved, the boresighting process is simplified, and the boresighting period is shortened.

The HUD target calibration method disclosed by the embodiment above mainly comprises the steps of shooting a target plate image through a camera arranged on a HUD fixing frame, and automatically identifying the position and the angle of a central reticle of the target plate image, so that the relative position and the angle deviation between the current HUD fixing frame and the axis of an airplane are identified, and target calibration work is carried out. Therefore, the key to target calibration includes accurate placement of the target plate device, and therefore, in a specific implementation, before implementing the HUD target calibration method, it is necessary to make the position of the target plate device satisfy a certain condition, that is, before the HUD target calibration method is executed, the target plate device is in an initial state, where the initial state includes: the symmetry axes of the two target plates are positioned on the plane where the yaw axis and the roll axis of the airplane are positioned, the distance between the central points of the cross-shaped scribed lines of the two target plates is the same as the central distance between the two HUDs on the airplane, and the connecting line of the central points of the cross-shaped scribed lines of the two target plates is parallel to the pitch axis of the airplane. Fig. 6 is a schematic view of a state of the aircraft and target board device according to the embodiment of the present invention, which can be understood by referring to fig. 6.

Fig. 7 is a flowchart of determining deviation data of a calibration object according to an embodiment of the present invention, which, with reference to fig. 7, may include:

step 701: cross-hatch lines of the target plate in the image of the target plate are identified.

Step 702: the angular deviation of the cross reticle from the X-axis of the target image information and the offset of the center point of the cross reticle from the center of the target image are determined.

Step 703: and calculating and determining pitch deviation data, yaw deviation data and roll deviation data of the airplane according to the first distance, the first altitude, the angle deviation and the offset.

In one implementation, the calibration operation is performed as follows:

A. and adjusting the main shaft scribed line of the telescopic support frame to a position superposed with the main shaft locking nut of the support frame. In the concrete implementation, the height of the target plate from the ground can be determined in advance, and then the marking is carried out at the corresponding position of the main shaft, so that the distance from the center of the cross reticle of the target plate to the ground does not need to be measured every time in the measurement, and the subsequent use is facilitated. Placing the target plate device at about 40m in front of the airplane, observing the numerical value of the laser range finder, and recording the measured data; wherein, 40m is not a fixed and invariable value, and the distance between the target plate device and the airplane is not allowed to be too long or too close in the general target correcting place; too close, the full view of the airplane cannot be observed through the collimating lens, and the centering precision is poor; the distance is also chosen in relation to the magnification of the telephoto lens.

Fig. 8 is a schematic diagram of a relationship between the height of the target board from the ground and other data, and with reference to fig. 8, in a specific implementation of determining the height of the target board from the ground: the main shaft is provided with a reticle, the height of the target plate from the ground still needs to be adjusted and recorded, and the height h of the target plate from the ground needs to satisfy the triangular relation shown in fig. 8. Wherein h is the height from the center of the cross reticle of the target plate to the ground; h is the height of the image acquisition device from the ground; l is the distance between the center of the target plate and the image acquisition device measured by the laser range finder; phi is the included angle between the image acquisition device and the HUD mounting surface.

B. Observing the airplane through the collimating lens, as shown in fig. 9, which is the initially observed airplane state; the handle was rocked so that the aircraft wing symmetry point coincides with the horizontal line of the cross scribe line, indicating that the target board horizontal axis is parallel to the aircraft pitch axis, as shown in figure 10. The rotating base on the target plate is then locked.

C. And observing the airplane through the collimating mirror again, and simultaneously transversely moving the target plate devices to ensure that the observed airplane is symmetrical about the center of the cross reticle in the collimating mirror, wherein the target plate devices indicate that the symmetrical axes of the two target plates are positioned in the plane of the heading axis (yaw axis) and the transverse rolling axis of the airplane. As shown in fig. 11.

D. After the above conditions are met, the telephoto lens and the camera module are installed on the HUD fixing frame through the tool, the power supply of the equipment is turned on, and relevant parameters such as target plate distance L and target plate height H are input into test software on the handheld machine. The test software connecting the camera and the handset and transmitting the image to the handset, the schematic diagram of the image captured is shown in fig. 12. The software automatically identifies the central reticle of the target plate, measures the angular deviation alpha of the central reticle from the X-axis of the image (shown in fig. 12) and the offset X, y from the center of the image, and calculates the pitch, yaw and roll deviation data.

E. According to above-mentioned deviation data, constantly adjust the adjusting screw on the HUD mount, reduce the deviation value, until satisfying required error range, accomplish the school target at last.

The HUD boresighting method disclosed by the embodiment of the application has the advantages that the aircraft does not need to be leveled any more in the HUD boresighting process, a large amount of manpower and material resources are saved, the boresighting process is simplified, and the boresighting efficiency is improved.

While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently with other steps in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A target plate apparatus, comprising:

the distance between the central points of the cross scribed lines of the two target plates is the same as that between the central points of the first calibration target and the second calibration target; the first boresight object and the second boresight object are two head-up displays of a main pilot and auxiliary pilot of the airplane;

the rotating base is rotatably arranged on the supporting frame.

2. The target plate apparatus of claim 1, further comprising:

and the laser range finder is arranged on the rotating base.

3. The target plate assembly of claim 1 wherein, in the case where the two target plates with cross-scribed lines are each connected to the rotating base by a telescoping rod, the telescoping rod is connected to the rotating base by a slide bearing.

4. The target plate arrangement of claim 1, wherein a locking arrangement for defining the position of the rotating base is provided on the rotating base.

5. A boresight system comprising the target plate arrangement of any one of claims 1-4, further comprising:

the image acquisition device is arranged on the HUD fixing frame and used for acquiring image information of a target plate in the target plate device, the target plate device comprises two target plates with cross scribed lines, and the distance between the center points of the cross scribed lines of the two target plates is the same as that between the center points of the first calibration target object and the second calibration target object;

6. The boresight system of claim 5, wherein the image capture device comprises a telephoto lens and a camera device, the telephoto lens having a focal length greater than the first distance.

7. A HUD boresight method applied to the boresight system according to any one of claims 5 to 6, comprising:

acquiring position data of a target plate in a target plate device;

acquiring data information from the image information;

8. The HUD boresight method according to claim 7, wherein the target plate device is in an initial state before the HUD boresight method is performed, the initial state including: the symmetry axes of the two target plates are positioned on the plane where the yaw axis and the roll axis of the calibration object are positioned, the distance between the central points of the cross-shaped scribed lines of the two target plates is the same as the central distance between the two HUDs on the calibration object, and the connecting line of the central points of the cross-shaped scribed lines of the two target plates is parallel to the pitch axis of the calibration object.

9. The HUD boresight method of claim 7, wherein the acquiring position data of the target plate in the target plate device comprises:

10. The HUD boresight method according to claim 9, wherein the determining deviation data from the position data of the target plate and the data information includes: