Airborne blade antenna alignment device and method

Abstract

This invention relates to the field of antenna calibration, specifically disclosing an airborne blade antenna calibration device and method. The device includes a base, with an antenna mounting platform connected to the top of the base. A calibration mechanism for antenna calibration is also installed on one side of the top of the base. The calibration mechanism includes an antenna protection connector and a two-dimensional displacement platform. During antenna calibration, the antenna protection connector is fitted onto the outside of the antenna and connected to the two-dimensional displacement platform. The two-dimensional displacement platform moves on the base to apply force to the antenna protection connector. This method and device for calibrating blade antennas are continuously optimized and iterated, improving product maintenance capabilities during the maintenance and repair of aerospace components. Through simple operation, it achieves better maintenance efficiency and quality. In particular, the design and implementation of the antenna protection connector, by moving in conjunction with the two-dimensional displacement platform, improves the effectiveness and scientific nature of airborne blade antenna calibration.

Description

Technical Field

[0001] This invention relates to a calibration device, specifically to an airborne blade antenna calibration device and method, belonging to the field of antenna calibration. Background Technology

[0002] Airborne blade antennas are components in communication and navigation systems that radiate and receive electromagnetic waves. Their shape and structural characteristics directly affect the system's application performance. In the actual maintenance and support process of aviation maintenance systems, blade antennas are one of the maintenance targets. Due to long-term use, the shape and structure of these components may change and no longer meet the component's specifications. Therefore, they need to be reshaped during equipment maintenance. However, the tooling currently used is simple and cannot effectively perform reshaping, which also poses a risk of damage to the components. In order to improve the effectiveness and scientific nature of blade antenna reshaping and promote the efficiency and quality of component maintenance operations, this paper proposes a solution.

[0003] Chinese utility model patent CN202320896537.5 discloses an airborne blade antenna, which includes a blade antenna array, an antenna body, a protective component, an extension component, and a positioning assembly. The antenna's gain can be adjusted and deployed according to complex environments to improve signal reception strength. The drawback is that this method only proposes a novel airborne blade antenna and does not involve methods or devices for antenna alignment.

[0004] Chinese utility model patent CN202221263997.6 discloses an airborne VHF broadband blade antenna, which includes a blade radiator element, a mounting base, and a fiberglass outer casing, achieving miniaturization and wide bandwidth. The drawback is that this method only proposes an airborne VHF broadband blade antenna and does not involve methods or devices for antenna reshaping.

[0005] Chinese invention patent CN202211549022.4 discloses a deformable dipole knife antenna, which includes an antenna main structure, an RF connector, a dielectric radome, etc., improving the antenna's horizontal gain and increasing its effective range. The drawback is that this method only proposes an airborne VHF broadband knife antenna and does not involve methods or devices for antenna reshaping.

[0006] Chinese utility model patent CN202021029781.4 discloses a corrosion-resistant blade antenna structure. By providing a first antenna shell and a second antenna shell on the outer side of the antenna body, the first and second antenna shells can be relatively far from the exposed antenna body for easy maintenance. The drawback is that this method only proposes a corrosion-resistant blade antenna structure and does not involve methods or devices for antenna alignment.

[0007] The August 2017 issue of *Electronic Mechanical Engineering*, Volume 33, Issue 4, pages 62-64, published a proposed method for correcting the finite element model of a blade antenna based on sensitivity analysis. This method primarily utilizes modal parameters obtained from modal tests to correct the finite element model of a specific blade antenna. After correction, the maximum relative error of the modal frequencies of the finite element model was reduced to within 10%, and the modal confidence scores (MAC) were all greater than 0.8. The drawback is that this method only corrects the finite element model of the blade antenna and does not involve methods or devices for antenna alignment.

[0008] Therefore, research on blade antennas has mainly focused on the structural design and model correction of open-type antennas, serving the design and production of products. However, research on blade antenna calibration devices and methods, particularly for aviation equipment maintenance, is relatively limited. It is necessary to conduct research on blade antenna calibration devices and methods. Summary of the Invention

[0009] To address the problems in the prior art, the present invention provides an airborne blade antenna calibration device and method.

[0010] The objective of this invention can be achieved through the following technical solutions:

[0011] An airborne blade antenna calibration device includes a base, an antenna mounting platform for antenna installation is connected to the top of the base, and a calibration mechanism for antenna calibration is also installed on one side of the top of the base. The calibration mechanism includes an antenna protection connector and a two-dimensional displacement platform. During antenna calibration, the antenna protection connector is fitted onto the outside of the antenna and connected to the two-dimensional displacement platform. The two-dimensional displacement platform moves on the base to apply force to the antenna protection connector.

[0012] Optionally, the antenna mounting platform is connected to the base by bolts, and the top of the antenna mounting platform is also provided with a placement hole for placing the protrusion of the antenna radio frequency connection port.

[0013] Optionally, the two-dimensional displacement platform includes a horizontal hand-operated ball screw threaded slide module, a vertical hand-operated ball screw threaded slide module, and a horizontal sliding module. The horizontal sliding module is mounted on the base. The bottom of the vertical hand-operated ball screw threaded slide module is connected to the top of the horizontal sliding module, and the top of the vertical hand-operated ball screw threaded slide module is connected to the horizontal hand-operated ball screw threaded slide module. The horizontal hand-operated ball screw threaded slide module can drive the vertical hand-operated ball screw threaded slide module to move along the top of the horizontal sliding module.

[0014] Optionally, a connecting rod is rotatably mounted on one side of the vertical threaded slide of the vertical hand-operated ball screw slide module, and a lug for calibration is connected to the side of the antenna protection connector. The end of the connecting rod away from the vertical threaded slide can be rotatably mounted with the lug.

[0015] Optionally, the base is connected to brackets on both sides of the top, the brackets include crossbars, and the bottom of both ends of the crossbars are connected to columns. The bottom of the columns is connected to the top of the base, and the horizontal hand-operated ball screw thread slide module is installed on the crossbars on both sides.

[0016] Optionally, the horizontal manual ball screw threaded slide module includes a horizontal screw and a horizontal threaded slide. The horizontal threaded slide is threaded onto the horizontal screw. One end of the horizontal screw passes through the crossbars on both sides and is rotatably mounted at the connection with the crossbars via a bearing.

[0017] The horizontal sliding module includes a slide rail and a horizontal slide table. The horizontal slide table is slidably mounted on the slide rail, and the slide rail is mounted on the base.

[0018] The vertical manual ball screw threaded slide module includes a vertical screw and a vertical threaded slide. The top of the vertical screw passes through the horizontal threaded slide and is rotatably mounted to the horizontal threaded slide via a rotating shaft. The bottom of the vertical screw is rotatably mounted to the top of the horizontal slide via a bearing. The vertical threaded slide is threaded onto the vertical screw.

[0019] Optionally, the top of the base is also equipped with an X-axis level and a Y-axis level, and both ends of the bottom of the base are threaded with foot cups for adjusting the height.

[0020] A method for calibrating an airborne blade antenna, which utilizes a calibration device to calibrate the blade antenna, and further includes the following steps:

[0021] Step 1: Level the base. According to the indications of the X-axis level and Y-axis level on the base, turn and adjust the feet at the bottom of the base to make the base level.

[0022] Step 2: Antenna mounting platform selection and installation. Based on the installation location of the antenna to be calibrated, select an antenna mounting platform that is compatible with the antenna to be calibrated, and install the antenna mounting platform on the base.

[0023] Step 3: Install the antenna to be calibrated. Fix the antenna to be calibrated on the antenna mounting platform.

[0024] Step 4: Selection and assembly of antenna protection connectors. Based on the external dimensions of the antenna to be calibrated, select the appropriate antenna protection connectors and fit them onto the outside of the antenna.

[0025] Step 5: Initial adjustment of the two-dimensional displacement platform. Based on the deformation of the antenna's shape deviating from the center line, the two-dimensional displacement platform is initially adjusted. First, the horizontal screw is turned to adjust the horizontal threaded slide to the preset horizontal position, and then the vertical screw is turned to adjust the vertical threaded slide to the preset height position.

[0026] Step 6: Connecting rod. Rotate the end of the connecting rod away from the vertical threaded slide to the lug on the same side of the connecting rod via a pin.

[0027] Step 7: Rough calibration of the antenna to be calibrated. Tighten the horizontal lead screw to move the horizontal threaded slide in the horizontal direction, generating a horizontal force for calibration, which in turn causes the antenna to be calibrated to deflect towards the center until the antenna is deflected to the center position.

[0028] Step 8: Fine calibration of the antenna to be calibrated. By turning the vertical screw, the vertical threaded slide moves up or down in the vertical direction, generating a vertical force for calibration, which in turn creates a force that deflects the antenna to be calibrated toward the center until the antenna is deflected to the center position.

[0029] Step 9: Keep the vertical and horizontal lead screws stationary for at least 2 hours.

[0030] Step 10: Inspection and calibration. Disassemble the pin at the connection between the ear and the connecting rod, separate the ear from the connecting rod, and check the calibration status of the antenna to be calibrated. If it does not meet the preset requirements, reconnect the ear and the connecting rod, and then proceed to steps 8 and 9 in sequence. If it meets the preset requirements, continue to the next step.

[0031] Step 11: Disassemble the antenna to be calibrated. Remove the antenna protection connector that is mounted on the antenna to be calibrated, and then remove the antenna from the antenna mounting platform. The antenna calibration is now complete.

[0032] The beneficial effects of this invention are:

[0033] 1. The method and device for calibrating blade antennas are continuously optimized and iterated. They are used in the maintenance and repair phase of aviation components to improve product maintenance capabilities. Operators can achieve better maintenance efficiency and quality by performing simple operations based on the device and method. In particular, the design and implementation of the antenna protection connector, by moving together with the two-dimensional displacement platform, improves the effectiveness and scientific nature of airborne blade antenna calibration.

[0034] 2. Design and implementation of blade antenna protection connector: In order to protect the blade antenna, based on the relevant geometric parameters of the blade antenna and its connection with the connecting rod, the digital model of the blade antenna is designed. Using 3D printing technology, the blade antenna protection connector can be precisely manufactured, realizing protection and connection during the calibration of the blade antenna, thus improving the calibration quality of the blade antenna.

[0035] 3. A two-dimensional displacement platform is used to provide displacement, enabling initial adjustment based on the deformation of the antenna's shape deviating from the centerline. By using a combination of a horizontal hand-operated ball screw threaded slide module and a vertical hand-operated ball screw threaded slide module, the airborne blade antenna can be quickly and accurately calibrated and statically held, meeting the practicality and consistency requirements of airborne blade antenna calibration during maintenance. Attached Figure Description

[0036] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 This is a schematic diagram of the installation structure of the horizontal manual rocker ball screw threaded slide module and the vertical manual rocker ball screw threaded slide module of the present invention.

[0039] Figure 3 This is a flowchart of the antenna calibration process in this invention.

[0040] In the diagram: 1. Base; 2. Antenna mounting platform; 3. Antenna protection connector; 4. Two-dimensional displacement platform; 5. Connecting rod; 6. Bracket; 7. Antenna to be calibrated; 8. Y-axis level; 9. X-axis level; 10. Foot cup; 11. Horizontal slide; 12. Vertical lead screw; 13. Vertical threaded slide; 14. Horizontal threaded slide; 15. Horizontal lead screw; 16. Lug. Detailed Implementation

[0041] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figure 1-3 As shown, an airborne blade antenna calibration device includes a base 1, an antenna mounting platform 2 for antenna installation connected to the top of the base 1, and a calibration mechanism for antenna calibration installed on one side of the top of the base 1. The calibration mechanism includes an antenna protection connector 3 and a two-dimensional displacement platform 4. During antenna calibration, the antenna protection connector 3 is fitted onto the outside of the antenna and connected to the two-dimensional displacement platform 4. The two-dimensional displacement platform 4 moves on the base 1 to apply force to the antenna protection connector 3.

[0043] Specifically, the antenna mounting platform 2 is connected to the base 1 by bolts, and the top of the antenna mounting platform 2 is also provided with placement holes for accommodating the protrusion of the antenna's RF connection port. The dimensions of the antenna mounting platform 2 and the placement holes on its top are designed to match the antenna 7 to be calibrated; each type of antenna mounting platform 2 corresponds to one type of antenna 7 to be calibrated. The placement holes prevent interference between the protrusions of the antenna's RF connection port and the antenna mounting platforms 2, and also provide initial positioning for the antenna 7 to be calibrated, facilitating stable installation of the antenna 7 on the antenna mounting platform 2. The antenna 7 to be calibrated is then installed on the antenna mounting platform using screws.

[0044] Specifically, the two-dimensional displacement platform 4 includes a horizontal manual ball screw threaded slide module, a vertical manual ball screw threaded slide module, and a horizontal sliding module. The horizontal sliding module is mounted on the base 1. The bottom of the vertical manual ball screw threaded slide module is connected to the top of the horizontal sliding module, and the top of the vertical manual ball screw threaded slide module is connected to the horizontal manual ball screw threaded slide module. The horizontal manual ball screw threaded slide module can drive the vertical manual ball screw threaded slide module to move along the top of the horizontal sliding module. By using the horizontal and vertical manual ball screw threaded slide modules in conjunction, precise alignment and static holding of the airborne blade antenna can be quickly achieved, meeting the practicality and consistency requirements of airborne blade antenna alignment during maintenance.

[0045] The horizontal hand-operated ball screw threaded slide module includes a horizontal screw 15 and a horizontal threaded slide 14. The horizontal threaded slide 14 is threaded onto the horizontal screw 15. One end of the horizontal screw 15 passes through the crossbars on both sides and is rotatably mounted at the connection with the crossbars via a bearing.

[0046] The horizontal sliding module includes a slide rail and a horizontal slide table 11. The horizontal slide table 11 is slidably mounted on the slide rail, and the slide rail is mounted on the base 1.

[0047] The vertical hand-cranked ball screw threaded slide module includes a vertical lead screw 12 and a vertical threaded slide 13. The top of the vertical lead screw 12 passes through a horizontal threaded slide 14 and is rotatably mounted to the horizontal threaded slide 14 via a pivot. The bottom of the vertical lead screw 12 is rotatably mounted to the top of the horizontal slide 11 via a bearing. The vertical threaded slide 13 is threaded onto the vertical lead screw 12. A hand crank handle is connected to one end of both the vertical lead screw 12 and the horizontal lead screw 13.

[0048] During antenna calibration, the horizontal hand-operated ball screw threaded slide module applies force to the antenna in the horizontal direction, thus achieving a coarse calibration effect. The vertical hand-operated ball screw threaded slide module applies force in the vertical direction, thus achieving a fine calibration effect.

[0049] Specifically, a connecting rod 5 is rotatably mounted on one side of the vertical threaded slide 13 on the vertical hand-operated ball screw threaded slide module. An ear 16 for calibration is connected to the side of the antenna protection connector 3. The end of the connecting rod 5 away from the vertical threaded slide 13 can be rotatably mounted with the ear 16. The antenna protection connector 3 is made of photosensitive resin using SLA technology in 3D printing. It is designed based on the shape and size of the antenna 7 to be calibrated, and can be directly fitted onto the outside of the antenna 7. After fitting, the inner wall of the antenna protection connector 3 fits tightly against the outer wall of the antenna 7, preventing it from moving or falling off. This protects the antenna during calibration, preventing external damage and improving the calibration quality of the blade antenna. The ear 16 facilitates the connection between the antenna protection connector 3 and the vertical threaded slide 13 by the connecting rod 5, and also serves as a force-bearing component during subsequent calibration. Both the lug 16 and the vertical thread slide 13 have pin holes on one side, and the connecting rod 5 also has pin holes at both ends. After the pin holes at both ends of the connecting rod 5 are aligned with the pin holes on the sides of the lug 16 and the vertical thread slide 13, the pins are inserted into the pin holes.

[0050] Specifically, brackets 6 are connected to both sides of the top of the base 1. Each bracket 6 includes a crossbar, and columns are connected to the bottom of both ends of the crossbar. The bottom of the columns is connected to the top of the base 1. The horizontal hand-operated ball screw threaded slide module is installed on the crossbars on both sides.

[0051] Specifically, the top of the base 1 is equipped with an X-axis level 9 and a Y-axis level 8, and both ends of the bottom of the base 1 are threaded with adjustable leveling feet 10. After the base 1 is placed on the preset work surface, the X-axis level 9 and Y-axis level 8 can be used to determine whether the base 1 is level. If it is not level, the leveling feet 10 can be tightened. The bolts on the top of the leveling feet 10 are threaded into the base 1, thereby adjusting the height of the ends of the base 1 to achieve a level state.

[0052] A method for calibrating an airborne blade antenna, which utilizes a calibration device to calibrate the blade antenna, and further includes the following steps:

[0053] Step 1: Level the base 1. Based on the indications of the X-axis level 9 and Y-axis level 8 on the base 1, turn and adjust the foot cup 10 under the base 1 to make the base 1 level.

[0054] Step 2: Selection and installation of antenna mounting platform 2. Based on the installation position of the antenna 7 to be calibrated, select the antenna mounting platform 2 that is compatible with the antenna 7 to be calibrated, and install the antenna mounting platform 2 on the base 1.

[0055] Step 3: Install the antenna 7 to be calibrated. Fix the antenna 7 to be calibrated on the antenna mounting platform 2. After placing the antenna 7 to be calibrated on the antenna mounting platform 2 and adjusting it to the preset calibration position, use screws to connect and fix the bottom edge of the antenna 7 to the top of the antenna mounting platform 2.

[0056] Step 4: Selection and assembly of antenna protection connector 3. Based on the external dimensions of the antenna 7 to be calibrated, select the corresponding antenna protection connector 3 and fit it onto the outside of the antenna 7. The antenna 7 to be calibrated only deviates from the center line and does not undergo significant deformation. The matching antenna protection connector 3 can be smoothly fitted onto the outside of the antenna 7 and clearly show the outline of the antenna 7.

[0057] Step 5: Initial adjustment of the two-dimensional displacement platform 4. Based on the deformation of the antenna 7 to be calibrated, which deviates from the center line, the two-dimensional displacement platform 4 is initially adjusted. First, the horizontal screw 15 is turned to adjust the horizontal threaded slide 14 to the preset horizontal position. Then, the vertical screw 12 is turned to adjust the vertical threaded slide 13 to the preset height position. This facilitates the connection of the vertical threaded slide 13 to the lug 16 via the connecting rod 5. The number of rotations of the horizontal screw 15 and the vertical screw 12 can be reduced accordingly, thereby making it easier to control the calibration force.

[0058] Step 6: Connecting rod 5. Rotate the end of connecting rod 5 away from the vertical threaded slide 13 to the lug 16 on the same side via a pin.

[0059] Step 7: Coarse calibration of the antenna 7 to be calibrated. Tighten the horizontal lead screw 15, which moves the horizontal threaded slide 14 in the horizontal direction, generating a horizontal force for calibration. This force causes the antenna 7 to be calibrated to deflect towards the center until it reaches the center position. The horizontal hand-operated ball screw threaded slide module is equipped with a limiter. After coarse calibration, tighten the limiter to prevent the horizontal threaded slide 14 from moving further.

[0060] Step 8: Fine calibration of the antenna 7 to be calibrated. By turning the vertical lead screw 12, the vertical threaded slide 13 is moved up or down in the vertical direction, generating a vertical force for calibration, which forms a force that causes the antenna 7 to be calibrated to deflect towards the center until the antenna 7 is deflected to the center position. A limiter is configured on the vertical hand-cranked ball screw threaded slide module. After fine calibration, the limiter is locked.

[0061] Step 9: Hold and lock the limiters in the horizontal and vertical directions, keeping the vertical lead screw 12 and the horizontal lead screw 15 stationary for 2 hours or more.

[0062] Step 10: Inspection and Calibration. Disconnect the pin at the connection between lug 16 and connecting rod 5, detach lug 16 from connecting rod 5, and inspect the alignment of the antenna 7 to be calibrated. This can be done visually or with auxiliary equipment. If the inspection result does not meet the preset requirements, reconnect lug 16 and connecting rod 5, and then proceed to steps 8 and 9 in sequence. If the preset requirements are met, continue to the next step.

[0063] Step 11: Disassemble the antenna 7 to be calibrated, remove the antenna protection connector 3 fitted on the antenna 7 to be calibrated, and then remove the antenna 7 to be calibrated from the antenna mounting platform 2. The antenna calibration is complete. If you want to continue to calibrate the next antenna 7 of the same type, return to step 3 and reinstall the antenna 7 to be calibrated for calibration. If you do not want to continue to calibrate the same type of antenna, reset the two-dimensional displacement platform 4.

[0064] Step 12: Reset the two-dimensional displacement platform 4, remove the connecting rod 5 from the vertical threaded slide 13, and then turn the vertical lead screw 12 and the horizontal lead screw 15 respectively to move the vertical threaded slide 13 and the horizontal threaded slide 14 to the preset original position.

[0065] Step 13: Disassemble antenna mounting platform 2. Remove antenna mounting platform 2 from base 1. If different types of antennas 7 need to be calibrated, select the corresponding antenna mounting platform 2 and install it. Reinstall the antenna 7 to be calibrated and perform the calibration operation. If no further antenna calibration is needed, end the operation.

[0066] Step Fourteen: End. Complete the calibration of antenna 7 and check and organize all components of the device.

[0067] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An airborne blade antenna calibration device, comprising a base, characterized in that, The top of the base is connected to an antenna mounting platform for antenna installation, and a calibration mechanism for antenna calibration is also installed on one side of the top of the base. The calibration mechanism includes an antenna protection connector and a two-dimensional displacement platform. When the antenna is calibrated, the antenna protection connector is fitted onto the outside of the antenna and connected to the two-dimensional displacement platform. The two-dimensional displacement platform moves on the base to apply force to the antenna protection connector. The two-dimensional displacement platform includes a horizontal manual ball screw threaded slide module, a vertical manual ball screw threaded slide module, and a horizontal sliding module. The horizontal sliding module is mounted on the base. The bottom of the vertical manual ball screw threaded slide module is connected to the top of the horizontal sliding module, and the top of the vertical manual ball screw threaded slide module is connected to the horizontal manual ball screw threaded slide module. The horizontal manual ball screw threaded slide module can drive the vertical manual ball screw threaded slide module to move along the top of the horizontal sliding module. A connecting rod is rotatably mounted on one side of the vertical threaded slide of the vertical manual ball screw slide module. The side of the antenna protection connector is connected to a lug for calibration. The end of the connecting rod away from the vertical threaded slide can be rotatably mounted with the lug. The base has brackets connected to both sides of its top. Each bracket includes a crossbar, and each end of the crossbar has a column connected to its bottom. The bottom of the column is connected to the top of the base. A horizontal hand-operated ball screw threaded slide module is installed on the crossbars on both sides. The horizontal manual ball screw threaded slide module includes a horizontal screw and a horizontal threaded slide. The horizontal threaded slide is threaded onto the horizontal screw. One end of the horizontal screw passes through the crossbars on both sides and is rotatably mounted at the connection with the crossbars via a bearing. The horizontal sliding module includes a slide rail and a horizontal slide table. The horizontal slide table is slidably mounted on the slide rail, and the slide rail is mounted on the base. The vertical manual ball screw threaded slide module includes a vertical screw and a vertical threaded slide. The top of the vertical screw passes through the horizontal threaded slide and is rotatably mounted to the horizontal threaded slide via a rotating shaft. The bottom of the vertical screw is rotatably mounted to the top of the horizontal slide via a bearing. The vertical threaded slide is threaded onto the vertical screw.

2. The airborne blade antenna calibration device according to claim 1, characterized in that, The antenna mounting platform is connected to the base by bolts, and the top of the antenna mounting platform is also provided with a placement hole for placing the protrusion of the antenna radio frequency connection port.

3. The airborne blade antenna calibration device according to claim 2, characterized in that, The base is also equipped with an X-axis level and a Y-axis level on its top, and the bottom two ends of the base are threaded with foot cups for adjusting the height.

4. A method for correcting the shape of an airborne blade antenna, characterized in that, The airborne blade antenna calibration method uses the calibration device described in any one of claims 1-3 to calibrate the blade antenna, and the method further includes the following steps: Step 1: Level the base. According to the indications of the X-axis level and Y-axis level on the base, turn and adjust the feet at the bottom of the base to make the base level. Step 2: Antenna mounting platform selection and installation. Based on the installation location of the antenna to be calibrated, select an antenna mounting platform that is compatible with the antenna to be calibrated, and install the antenna mounting platform on the base. Step 3: Install the antenna to be calibrated. Fix the antenna to be calibrated on the antenna mounting platform. Step 4: Selection and assembly of antenna protection connectors. Based on the external dimensions of the antenna to be calibrated, select the appropriate antenna protection connectors and fit them onto the outside of the antenna. Step 5: Initial adjustment of the two-dimensional displacement platform. Based on the deformation of the antenna's shape deviating from the center line, the two-dimensional displacement platform is initially adjusted. First, the horizontal screw is turned to adjust the horizontal threaded slide to the preset horizontal position, and then the vertical screw is turned to adjust the vertical threaded slide to the preset height position. Step 6: Connecting rod. Rotate the end of the connecting rod away from the vertical threaded slide to the lug on the same side of the connecting rod via a pin. Step 7: Rough calibration of the antenna to be calibrated. Tighten the horizontal lead screw to move the horizontal threaded slide in the horizontal direction, generating a horizontal force for calibration, which in turn causes the antenna to be calibrated to deflect towards the center until the antenna is deflected to the center position. Step 8: Fine calibration of the antenna to be calibrated. By turning the vertical screw, the vertical threaded slide moves up or down in the vertical direction, generating a vertical force for calibration, which in turn creates a force that deflects the antenna to be calibrated toward the center until the antenna is deflected to the center position. Step 9: Keep the vertical and horizontal lead screws stationary for at least 2 hours. Step 10: Inspection and calibration. Disassemble the pin at the connection between the ear and the connecting rod, separate the ear from the connecting rod, and check the calibration status of the antenna to be calibrated. If it does not meet the preset requirements, reconnect the ear and the connecting rod, and then proceed to steps 8 and 9 in sequence. If it meets the preset requirements, continue to the next step. Step 11: Disassemble the antenna to be calibrated. Remove the antenna protection connector that is mounted on the antenna to be calibrated, and then remove the antenna from the antenna mounting platform. The antenna calibration is now complete.

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