Laser communication system for unmanned aerial vehicle platform and working method thereof

Abstract

The invention provides a laser communication system for an unmanned aerial vehicle platform, and the system comprises a navigator which is disposed at the upper part of the unmanned aerial vehicle platform and is used for obtaining the position of the unmanned aerial vehicle platform; the sensing module is arranged on the upper portion of the unmanned aerial vehicle platform and used for obtaining the posture of the unmanned aerial vehicle platform; the control module is used for acquiring an aiming angle currently required by the laser communication terminal based on the self position and the self attitude of the unmanned aerial vehicle, and controlling the unmanned aerial vehicle platform to execute a flight instruction according to the aiming angle; the laser communication terminal is controlled by the control module to execute the scanning instruction, captures and tracks an optical signal according to scanning, and receives and transmits the optical signal to perform laser communication; the invention further provides a working method of the laser communication system for the unmanned aerial vehicle platform. The unmanned aerial vehicle attitude adjustment is used for replacing a two-dimensional rotary table of an original laser communication terminal, composite control over the unmanned aerial vehicle laser communication terminal is achieved, and the weight and power consumption of the unmanned aerial vehicle laser communication terminal are effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of laser communication technology for unmanned aerial vehicles (UAVs), and in particular to a laser communication system for UAV platforms and its operating method. Background Technology

[0002] Laser communication technology has been widely used in the field of drone communication due to its advantages such as high communication speed, strong anti-interference ability, and good confidentiality. At present, the drone laser communication terminals available on the market usually weigh between 10kg and 50kg and consume about 100W of power. Most of them are limited by weight and power consumption and can only be adapted to large drone platforms.

[0003] In recent years, with the continuous evolution of drone technology, the development and application of swarm drones have become increasingly widespread. Unlike traditional large drone platforms, swarm drone platforms generally weigh between 10kg and 50kg. In addition to the weight of the drone platform itself, they also need to carry remote sensing and telemetry equipment. The weight requirements for the laser communication terminal are generally in the kilogram range, and the power consumption is in the tens of watts range, in order to ensure that the drone swarm can achieve efficient and stable laser communication while maintaining flexibility, maneuverability, and long endurance. However, the structural design of existing traditional UAV laser communication terminals is difficult to adapt to the lightweight requirements of swarm UAVs. On the one hand, traditional UAV laser communication terminals generally include multiple functional components such as a two-dimensional turntable, optical path, and electronic control. Under current technology, the structural design and material selection of these components are close to the weight reduction limit, making it difficult to further reduce the weight by a significant margin. Among them, the two-dimensional turntable, as the core component for communication pointing adjustment, has a complex mechanical structure and low integration, which is the main reason why the weight is difficult to reduce. Consequently, it is difficult to reduce the overall weight of the communication terminal to below 1kg, and the power consumption cannot be controlled below 20W, which cannot meet the requirements for carrying and operating swarm UAVs. On the other hand, traditional terminals rely on their own two-dimensional turntable for target tracking and communication pointing adjustment, without making full use of the attitude control capabilities already possessed by the swarm UAVs, resulting in functional redundancy and wasted weight.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The present invention addresses the shortcomings of the aforementioned technologies by providing a laser communication system for unmanned aerial vehicle (UAV) platforms. This system replaces the original two-dimensional turntable of the terminal with a miniaturized swarm UAV attitude adjustment system. Furthermore, it combines the existing sensing devices of the UAV with the laser communication terminal camera spot images to achieve composite control of the UAV laser communication terminal. This effectively reduces the weight and power consumption of the UAV laser communication terminal and meets the requirements for operation on swarm UAVs.

[0006] The specific details of the technical solution proposed in this invention are as follows:

[0007] A laser communication system for an unmanned aerial vehicle (UAV) platform includes:

[0008] Navigation, located on the top of the drone platform, is used to obtain the drone platform's own position;

[0009] The sensing module, located on the upper part of the drone platform, is used to acquire the drone platform's own attitude.

[0010] The control module, based on the UAV's own position and attitude, obtains the aiming angle currently required by the laser communication terminal and controls the UAV platform to execute flight commands accordingly.

[0011] The laser communication terminal is controlled by the control module to execute scanning commands, capture and track light signals according to the scan, and simultaneously transmit and receive light signals to conduct laser communication.

[0012] Furthermore, the laser communication terminal includes:

[0013] The scanning unit is controlled by the control module to execute scanning commands;

[0014] The tracking and detection unit is used to acquire spatial light signals and track and detect them, enabling the perception of the deflection angle of the light signals.

[0015] An optical antenna is used to receive and transmit laser signals, and can efficiently couple laser signals in free space into the tracking and detection unit.

[0016] The optical path enables the transmission and reception of optical signals, and the control module enables high-speed communication.

[0017] Furthermore, the scanning unit includes a swing mirror, which is a MEMS-driven two-dimensional swing mirror; the swing mirror is positioned between the tracking and detection unit and the optical antenna, and the swing mirror is controlled in a closed loop by a linear sensor.

[0018] Furthermore, the optical antenna is a beam expander antenna, and its basic parameters include a 40mm aperture, a magnification of 5X, and an operating wavelength of 400nm-1700nm.

[0019] Furthermore, the tracking and detection unit is a camera or a four-quadrant detector; the drone platform is a commercial drone.

[0020] Furthermore, the control module is located in the middle of the UAV platform; the laser communication terminal is located in the lower part of the UAV platform.

[0021] Furthermore, the navigation and sensing modules are mounted coaxially with the optical antenna;

[0022] The tracking and detection unit, optical antenna, and light-receiving and receiving circuit are assembled on a single optomechanical structure, which is then mounted on the UAV platform via vibration isolators.

[0023] The tracking and detection unit and the light-receiving and light-emitting path are located at the focal point of the optical antenna.

[0024] This invention also discloses a method for operating a laser communication system for an unmanned aerial vehicle (UAV) platform, comprising the following steps:

[0025] S10. The communication system obtains the position and attitude of the UAV platform through the navigation and sensing modules, and the control module calculates the aiming angle required by the laser communication terminal based on the position and attitude of the UAV platform.

[0026] S20. Based on the aiming angle obtained in step S10, the UAV platform is controlled by the aiming angle control module to perform initial aiming and maintain the aiming angle.

[0027] S30. The scanning unit is controlled by the control module to execute scanning commands and detects whether a light signal is received by the tracking and detection unit.

[0028] If a light signal is received, scanning stops and the system enters the tracking phase, using the light transmission and reception path for laser communication; if no light signal is received, scanning continues.

[0029] Furthermore, step S30 also includes: if the tracking and detection unit does not receive an optical signal, the control module determines the number of scans by the scanning unit;

[0030] If the number of scans exceeds 5, adjust the aiming angle of the scanning unit and continue scanning;

[0031] If the number of scans is less than or equal to 5, continue scanning while maintaining the original aiming angle.

[0032] Furthermore, if the tracking and detection unit fails to receive the light signal within the preset time, the UAV attitude needs to be corrected, and steps S10-S30 need to be repeated until the tracking and detection unit receives the light signal within the preset time.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] This invention addresses the application requirements of laser communication terminals for swarm drones by proposing a composite tracking laser communication terminal for drones. It uses miniaturized swarm drone attitude adjustment to replace the original two-dimensional turntable of the terminal, and combines the existing sensing devices of the drone with the light spot image of the laser communication terminal camera to achieve composite control of the drone laser communication terminal, effectively reducing the weight and power consumption of the drone laser communication terminal.

[0035] By combining drones and laser terminals, the integrated design of drone laser communication terminals can reduce the weight of laser communication terminals to less than 1kg and the power consumption to less than 20W, providing a good foundation for swarm drone laser communication networking. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the laser communication system used for an unmanned aerial vehicle platform in this invention;

[0037] Figure 2 This is a schematic diagram of the working method of the laser communication system used for the UAV platform in this invention;

[0038] Figure 3 This is a schematic diagram of the scanning unit in this invention;

[0039] Figure 4 This is a schematic diagram of the UAV platform changing its attitude and scanning multiple times in this invention.

[0040] Marked in the image:

[0041] 1. Unmanned Aerial Vehicle (UAV) platform; 2. Navigation; 3. Control module; 4. Sensing module; 5. Laser communication terminal; 51. Scanning unit; 52. Tracking and detection unit; 53. Light receiving and receiving path; 54. Optical antenna. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "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 invention 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 limiting this invention.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Combined with appendix Figure 1 As shown, a miniaturized laser communication system for an unmanned aerial vehicle (UAV) platform includes:

[0046] Navigation 2, located on the upper part of the drone platform 1, is used to obtain the position of the drone platform 1 itself;

[0047] Sensing module 4 is located on the upper part of the drone platform 1 and is used to acquire the attitude of the drone platform 1 itself.

[0048] The control module 3, based on the UAV's own position and attitude, obtains the aiming angle currently required by the laser communication terminal 5, and controls the UAV platform 1 to execute flight commands accordingly.

[0049] The laser communication terminal 5 is controlled by the control module 3 to execute scanning commands, capture and track light signals according to the scan, and simultaneously receive and transmit light signals for laser communication.

[0050] Obviously, the navigation module 2 and sensing module 4 in this application provide position and attitude data support for communication, the control module 3 is responsible for the conversion and communication bridge between data and execution commands, and the laser communication terminal 5 is responsible for the core optical signal processing and communication. The structural design allows the UAV to dynamically adjust the aiming angle of laser communication according to its own state. Through the cooperation of the UAV platform 1 and the laser communication terminal 5, the integrated design of the UAV laser communication terminal 5 is realized. The UAV attitude adjustment replaces the original two-dimensional turntable of the terminal, reducing the weight and power consumption of the UAV laser communication terminal 5.

[0051] In some embodiments, the drone platform 1 is a commercial drone, with specific parameters including a payload exceeding 5 kg, a pointing accuracy better than 0.01°, and an attitude stability better than 0.1° / s. Commercial drones are low-cost, which can reduce the deployment and promotion costs of laser communication systems.

[0052] For example, sensing module 4 is a nine-axis sensor. The parameters of navigation 2 and the nine-axis sensor include, but are not limited to, orientation accuracy better than 0.05. o The attitude feedback accuracy is better than 0.005°.

[0053] In some embodiments, the control module 3 is located in the middle of the UAV platform 1. It can be either the flight control master of the UAV platform 1 or the capture and tracking communication master of the laser communication terminal 5; the laser communication terminal 5 is located in the lower part of the UAV platform 1.

[0054] The control module 3 is located in the middle of the UAV. This position is subject to balanced forces, which can reduce the impact of vibrations during UAV flight on the control module 3 and ensure the stability of its data processing and command transmission. The laser communication terminal 5 is located at the bottom, which can reduce the obstruction of light signals by the UAV fuselage, wings, etc., and avoid communication interruption caused by light signal obstruction. At the same time, it conforms to the conventional design of UAV center of gravity distribution and avoids the impact of unreasonable component layout on the flight stability of the UAV.

[0055] Furthermore, the calculation process by which control module 3 obtains the aiming angle currently required by laser communication terminal 5 is as follows:

[0056] The information obtained from Navigation 2 is latitude, longitude, and altitude in the geodetic coordinate system. To calculate the aiming vector, it needs to be converted to the Cartesian coordinate system, specifically the ECEF coordinate system. This conversion differs slightly from the conventional polar to Cartesian conversion because the Earth is an ellipsoid. Therefore, before the conversion, the first eccentricity e of the ellipsoid needs to be calculated using formulas 1.1 and 1.2. 2 And the radius of curvature N of the reference ellipsoid.

[0057]

[0058]

[0059] In obtaining e 2 After determining the values ​​of N and N, we can obtain Equation 1.3 by mimicking the transformation from polar coordinates to rectangular coordinates.

[0060]

[0061] Where alt is the geodetic height, which is the sum of elevation and geoid anomaly HA. lat and lon are latitude and longitude, respectively.

[0062] After the transformation from the LLA coordinate system to the ECEF coordinate system, the coordinates of the terminal are in the Cartesian coordinate system. At this point, the transformation to the ENU coordinate system, which is also a Cartesian coordinate system, only requires rotation and translation transformations.

[0063] The ENU coordinate system is the terminal body coordinate system. Therefore, the aiming vector must be obtained first before the transformation can be performed. The specific transformation process is shown in formulas 1.4-1.6 below.

[0064]

[0065]

[0066]

[0067] The aiming angle is obtained using formula 1.7, which is as follows:

[0068]

[0069] in For azimuth aiming angle, This is the pitch aiming angle.

[0070] In some possible embodiments, the laser communication terminal 5 includes:

[0071] Scanning unit 51 is controlled by control module 3 to execute scanning commands;

[0072] The tracking and detection unit 52 is used to acquire spatial light signals and track and detect the light signals, and can realize the angle perception of the light signals.

[0073] Optical antenna 54 is used to receive and transmit laser signals, and can efficiently couple laser signals in free space into tracking and detection unit 52;

[0074] The optical path 53 enables the transmission and reception of optical signals, and high-speed communication is achieved through the control module 3.

[0075] The laser communication terminal 5 operates collaboratively through multiple sub-modules. The scanning unit 51 issues scanning commands, the tracking and detection unit 52 can sense the optical signal deflection angle and monitor and track the optical signal, the optical antenna 54 ensures efficient coupling of the optical signal, and the receiving and transmitting optical path 53 is responsible for signal transmission and reception and high-speed communication. It can realize efficient capture and coupling of optical signals in laser communication, and at the same time, it supports high-speed communication through the control module 3 to meet the needs of high data transmission.

[0076] During operation, the aforementioned miniaturized laser communication system confirms its own position and attitude through navigation 2 and sensing module 4. Control module 3 calculates the current pointing angle required by the laser communication terminal 5, controls the UAV platform 1 to perform initial pointing, and maintains the pointing angle. Simultaneously, control module 3 controls the scanning unit 51 of the laser communication terminal 5 to scan. Once the spatial light signal passes through optical antenna 54 and enters tracking and detection unit 52, the tracking phase begins, and laser communication is conducted based on the light transmission and reception path 53.

[0077] In some embodiments, the scanning unit 51 in the laser communication terminal 5 includes a swing mirror, which is a MEMS-driven two-dimensional swing mirror; the swing mirror is disposed between the tracking and detection unit 52 and the optical antenna 54, and the swing mirror is controlled in a closed loop by a linear sensor.

[0078] The above embodiments employ a MEMS-driven two-dimensional tilting mirror. MEMS devices have the advantages of small size and fast response speed, which can adapt to the miniaturization requirements of UAVs and quickly adjust the angle to adapt to light signal capture. The tilting mirror is controlled by a linear sensor closed loop, which can correct the small deviation of the tilting mirror in real time, avoid scanning offset caused by external airflow, UAV shaking and other factors, greatly improve the accuracy of light signal scanning and tracking, and solve the problems of low control accuracy and susceptibility to interference of traditional scanning components.

[0079] Furthermore, the tilting mirror is controlled in a closed loop via the sensing module 4; the tilting range throughout the entire process is ±15mrad, with a control accuracy better than 10urad. The tilting mirror is placed between the scanning unit 51 and the optical antenna 54, and the deflection control range of the exit pupil beam is no less than ±3mrad, with a control accuracy better than 1urad.

[0080] By placing the oscillating mirror between the tracking and detection unit 52 and the optical antenna 54, the transmission path of the optical signal inside the terminal is shortened, the optical signal attenuation is reduced, and the efficiency of optical signal coupling and detection is further improved.

[0081] In some embodiments, the optical antenna 54 is a beam expander antenna. The basic parameters of the optical antenna 54 include an aperture of 40mm, a magnification of 5X, and an operating wavelength of 400nm-1700nm. The aperture and magnification parameters are designed to effectively expand and converge the laser signal, enhancing long-distance signal transmission capabilities, without exceeding the antenna's size and weight limits due to an excessively large aperture. The wide operating wavelength range allows it to adapt to various laser signal types, avoiding the poor adaptability of single-wavelength antennas. This enables it to meet the laser communication needs of different scenarios, improving the system's environmental adaptability and versatility.

[0082] Furthermore, the tracking and detection unit 52 can be a camera or a four-quadrant detector. The camera can be adapted to signal capture in complex lighting environments, while the four-quadrant detector has high-precision angle detection capability. Those skilled in the art can flexibly choose the design according to the actual communication scenario to improve the system's adaptability to different environments.

[0083] In some possible embodiments, the navigation 2 and the sensing module 4 are mounted coaxially with the optical antenna 54;

[0084] The tracking and detection unit 52, optical antenna 54, and light receiving and transmitting circuit 53 are assembled on a single optomechanical structure, which is mounted on the UAV platform 1 via a vibration isolator.

[0085] The light-receiving and light-receiving positions of the tracking and detection unit 52 and the light-receiving and light-receiving path 53 are located at the focal point of the optical wire.

[0086] In the aforementioned installation structure, the coaxial structure design ensures that the position and attitude data are consistent with the reference of the laser communication aiming direction, avoiding errors in the aiming angle calculated by the control module 3 due to installation direction deviations, and ensuring the accuracy of communication pointing. The optomechanical structure is installed with vibration isolators, which can effectively filter the vibrations generated during the flight of the UAV, preventing vibration from causing displacement of optical components, and solving problems such as optical signal coupling failure and decreased detection accuracy caused by vibration. Furthermore, placing the tracking and detection unit 52 and the light receiving and receiving path 53 at the focal point of the optical antenna 54 can maximize the coupling efficiency of the optical signal, reduce signal loss, and further ensure communication quality.

[0087] Combined with appendix Figure 2 As shown, the present invention also discloses a method for operating a miniaturized laser communication system for a UAV platform 1, comprising the following steps:

[0088] S10. The communication system obtains the position and attitude of the UAV platform 1 through the navigation 2 and the sensing module 4. The control module 3 calculates and obtains the aiming angle required by the laser communication terminal 5 based on the position and attitude of the UAV platform 1.

[0089] S20. Based on the aiming angle obtained in step S10, the aiming angle control module 3 controls the UAV platform 1 to perform initial aiming and maintain the aiming angle.

[0090] S30, the scanning unit 51 is controlled by the control module 3 to perform scanning, and the tracking and detection unit 52 detects whether an optical signal is received;

[0091] If an optical signal is received, scanning stops and the system enters the tracking phase, and laser communication is performed through the optical transmission and reception path 53; if no optical signal is received, scanning continues.

[0092] Furthermore, step S30 also includes: if the tracking and detection unit 52 does not receive an optical signal, the control module 3 determines the number of scans by the scanning unit 51;

[0093] If the number of scans exceeds 5, adjust the aiming angle of the scanning unit 51 and continue scanning;

[0094] If the number of scans is less than or equal to 5, continue scanning while maintaining the original aiming angle.

[0095] After the above steps, the scanning unit 51 (swivel mirror) of the laser communication terminal 5 acquires the scanning schematic diagram, as shown in the attached diagram. Figure 3 As shown.

[0096] Furthermore, in the actual operation of the laser communication system, if the tracking and detection unit 52 fails to receive a light signal within a preset time, the UAV attitude needs to be corrected, and steps S10-S30 need to be repeated until the tracking and detection unit 52 receives a light signal within the preset time. A schematic diagram of UAV attitude correction and multiple rescans is attached. Figure 4 As shown.

[0097] After the laser communication terminal 5 tracking and detection unit 52 (camera) in the miniaturized laser communication system receives the external light signal, the control module 3 controls the scanning unit 51 (swivel mirror) to change the transmission and reception angle of the laser communication to achieve optimal communication. If the angle exceeds the scanning range of the scanning unit 51, the control module 3 corrects the attitude of the UAV platform 1 based on the attitude feedback from the current navigation 2 and the sensing module 4 to ensure that tracking and communication can be carried out.

[0098] Compared with the prior art, the above embodiments of the present invention have the following beneficial technical effects:

[0099] This invention addresses the application requirements of a swarm drone laser communication terminal 5 by proposing a drone composite tracking laser communication terminal 5. It uses a miniaturized swarm drone attitude adjustment to replace the original terminal's two-dimensional turntable, and combines the drone's existing sensing devices with the laser communication terminal 5's camera spot image to achieve composite control of the drone laser communication terminal 5, effectively reducing the weight and power consumption of the drone laser communication terminal 5.

[0100] By combining the UAV platform 1 and the laser terminal, the UAV laser communication terminal 5 is designed as an integrated unit, which can reduce the weight of the laser communication terminal 5 to less than 1kg and the power consumption to less than 20W, providing a good foundation for the laser communication networking of swarm UAVs.

[0101] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A laser communication system for an unmanned aerial vehicle (UAV) platform, characterized in that, include: Navigation, located on the top of the drone platform, is used to obtain the drone platform's own position; The sensing module, located on the upper part of the drone platform, is used to acquire the drone platform's own attitude. The control module, based on the UAV's own position and attitude, obtains the aiming angle currently required by the laser communication terminal, and controls the UAV platform to execute flight commands accordingly. The laser communication terminal is controlled by the control module to execute scanning commands, capture and track light signals according to the scan, and simultaneously receive and transmit light signals for laser communication.

2. The laser communication system for an unmanned aerial vehicle platform according to claim 1, characterized in that, The laser communication terminal includes: The scanning unit is controlled by the control module to execute scanning commands; The tracking and detection unit is used to acquire light signals existing in space and to track and detect the light signals, enabling the perception of the deflection angle of the light signals. An optical antenna is used to receive and transmit laser signals, and can efficiently couple laser signals in free space into the tracking and detection unit. The optical path enables the transmission and reception of optical signals, and the control module enables high-speed communication.

3. A laser communication system for an unmanned aerial vehicle (UAV) platform according to claim 2, characterized in that, The scanning unit includes a swing mirror, which is a MEMS-driven two-dimensional swing mirror; the swing mirror is disposed between the tracking and detection unit and the optical antenna, and the swing mirror is controlled in a closed loop by a linear sensor.

4. A laser communication system for an unmanned aerial vehicle (UAV) platform according to claim 2, characterized in that, The optical antenna is a beam expander antenna, and its basic parameters include an aperture of 40mm, a magnification of 5X, and an operating wavelength of 400nm-1700nm.

5. A laser communication system for an unmanned aerial vehicle (UAV) platform according to claim 4, characterized in that, The tracking and detection unit is a camera or a four-quadrant detector; the drone platform is a commercial drone.

6. A laser communication system for an unmanned aerial vehicle (UAV) platform according to any one of claims 2-5, characterized in that, The control module is located in the middle of the UAV platform; the laser communication terminal is located in the lower part of the UAV platform.

7. A laser communication system for an unmanned aerial vehicle (UAV) platform according to claim 6, characterized in that, The navigation and sensing modules are installed in a coaxial orientation with the optical antenna. The tracking and detection unit, optical antenna, and light-receiving and receiving circuit are assembled on a single optomechanical structure, and the optomechanical structure is mounted on the UAV platform via a vibration isolator. The tracking and detection unit and the light-receiving and light-emitting path are located at the focal point of the optical antenna.

8. A method for operating a laser communication system for an unmanned aerial vehicle (UAV) platform, characterized in that, Includes the following steps: S10. The communication system obtains the position and attitude of the UAV platform through the navigation and sensing modules, and the control module calculates the aiming angle required by the laser communication terminal based on the position and attitude of the UAV platform. S20. The aiming angle control module controls the UAV platform to perform initial aiming according to the aiming angle obtained in step S10, and maintains the aiming angle. S30. The scanning unit is controlled by the control module to execute scanning commands and detects whether a light signal is received by the tracking and detection unit. If an optical signal is received, scanning stops, the tracking phase begins, and laser communication is conducted through the optical transmission and reception path. If no light signal is received, the scan continues.

9. The operating method of a laser communication system for an unmanned aerial vehicle platform according to claim 8, characterized in that, Step S30 further includes: if the tracking and detection unit does not receive an optical signal, the control module determines the number of scans performed by the scanning unit; If the number of scans exceeds 5, adjust the aiming angle of the scanning unit and continue scanning; If the number of scans is less than or equal to 5, continue scanning while maintaining the original aiming angle.

10. The operating method of a laser communication system for an unmanned aerial vehicle platform according to claim 8, characterized in that, If the tracking and detection unit fails to receive a light signal within a preset time, the drone's attitude needs to be corrected, and steps S10-S30 need to be repeated until the tracking and detection unit receives a light signal within the preset time.

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