Lightweight airborne laser wind-finding radar system

Abstract

The invention provides a lightweight airborne laser wind finding radar system. The wind-finding radar comprises a wind-finding radar body and a stabilizer fixedly matched with the outer surface of the wind-finding radar, the wind-finding radar body comprises a top cover, a rack body and a lower cover which are sequentially arranged from top to bottom, a mounting groove is formed in the rack body, a radar lens module is arranged in the mounting groove, and the radar lens module is arranged in the mounting groove. A driving motor is arranged at the front end of the radar lens module, a rotating shaft hole is formed in a central shaft of the driving motor, and a wedge-shaped lens is fixedly matched with the rotating shaft hole. The driving motor is mounted on the radar lens module through the motor mounting rack, a signal acquisition and processing module is fixedly mounted on the top cover, and the signal acquisition and processing module is provided with a plurality of electrical interfaces; a polarization-maintaining optical fiber acousto-optic modulator is installed on the inner side of the lower cover, and light weight is achieved and vibration resistance stability is improved through compact design. The invention relates to the technical field of laser radars.

Description

Technical Field

[0001] The present invention relates to the technical field of laser radars, and in particular to a lightweight airborne laser wind radar system. Background Art

[0002] Laser wind radar is a device that uses laser technology to measure wind speed and direction. It uses laser as a carrier wave, interacts with aerosol particles and atmospheric molecules in the atmosphere, and finally generates an echo signal. It uses the time difference of laser echoes or the Doppler frequency shift of laser backscattered echoes of particles in the air to measure parameters such as wind speed and direction. Related technical products are widely used in the fields of wind power, environmental protection and meteorology.

[0003] With the rapid development of low-altitude economy in recent years, when drones and flying cars perform urban distribution tasks (such as catering, express delivery, cargo transportation, etc.), their flight trajectories are easily disturbed by complex air flow fields between buildings, especially sudden wind shear phenomena, which may cause the aircraft to lose control, posing a major threat to public safety. Therefore, the application of laser wind radar in the field of low-altitude economy will play an important role. To combine laser wind radar with the field of low-altitude economy, the size of laser wind radar should be miniaturized, the weight should be lightened, and the stability of signal acquisition should be improved. Traditional laser wind radar is difficult to adapt to commercial drones with a load of less than 5kg due to weight (usually >15kg) and power consumption (>200W), and the lens aperture of the airborne radar is limited by weight. The radar lens is generally small and the detection distance. It is urgent to develop a high-performance laser wind radar that meets the requirements of less than 3kg, less than 20W, and a detection distance of more than 800 meters.

[0004] At present, some companies' airborne wind measuring radars are mainly installed directly on aircraft, with only vibration reduction measures and no integrated stability control system. They need to rely on the attitude data of the inertial measurement unit (IMU) for real-time correction. However, this solution has the following key problems: First, the IMU is susceptible to vibration and electromagnetic interference in a dynamic environment, and its accuracy decreases. Second, when the aircraft is maneuvering or encountering turbulence, sudden changes in attitude cause the laser pointing to be inaccurate. In addition, when the beam deflection exceeds the threshold, the Doppler signal is spatially mismatched, making it impossible to achieve effective wind field inversion. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention proposes a lightweight airborne laser wind measurement radar system with small size, light weight and high stability.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present invention is a lightweight airborne laser wind measurement radar system, which includes a wind measurement radar body and a stabilizer fixedly matched with the outer surface of the wind measurement radar, the wind measurement radar body includes a top cover, a frame body and a lower cover which are arranged in sequence from top to bottom, a mounting groove is arranged inside the frame body, and limited slots are symmetrically arranged on both sides of the upper end of the mounting groove, a radar lens module is arranged in the mounting groove, a driving motor is arranged at the front end of the radar lens module, a rotating shaft hole is arranged on the central axis of the driving motor, a wedge-shaped mirror is fixedly matched with the rotating shaft hole, the driving motor is installed on the radar lens module through the motor mounting frame, a signal acquisition and processing module is fixedly installed on the top cover, a plurality of electrical interfaces are arranged on the signal acquisition and processing module, a heat sink is arranged at the bottom of the mounting groove, a polarization-maintaining fiber acousto-optic modulator is arranged between the heat sink and the lower cover, and a plurality of fiber holes are arranged on the heat sink.

[0007] It can be seen from the above scheme that the top cover, the frame body and the lower cover are arranged from top to bottom, the signal acquisition and processing module is fixedly installed on the top cover, and the polarization-maintaining fiber acousto-optic modulator is arranged between the heat sink and the lower cover, so that the structure is compact, and the overall volume is reduced while ensuring the high-performance detection of the laser wind radar system. In addition, the signal acquisition and processing module and the polarization-maintaining fiber acousto-optic modulator will generate a large amount of heat during operation, which can be dissipated through the top cover and the lower cover to ensure the heat dissipation effect. Secondly, the upper part of the radar lens module is provided with a driving motor, and the wedge mirror is directly driven to rotate by the driving motor. Compared with the traditional method of transmission through gears or synchronous belts, the use of parts is reduced, which can not only reduce the overall volume and reduce the weight, but also speed up the rotation speed of the wedge mirror, improve the wind measurement efficiency, and make the information collection data feedback more timely. In the process of moving and collecting data, the wind measurement radar body can remain stable during the collection process by cooperating with the stabilizer, can be oriented, and can also automatically rotate in all directions, can detect three-dimensional wind fields, and improve the accuracy of information collection.

[0008] Furthermore, a code disc is provided at the lower end of the driving motor, a sensing slot is provided on the code disc, and a photoelectric switch for detecting the sensing slot is provided on the motor mounting frame.

[0009] Based on the above, when performing laser wind measurement, the driving motor rotates with the wedge mirror, and the code disk rotates with the sensing slot. When the sensing slot passes through the photoelectric switch, the photoelectric switch will sense the sensing slot, and this point will be used as the origin. The wedge mirror passes through four points in a circle. The positions of these four points will generate refracted lasers in four different directions. The reflection signals of the four beam lasers are combined with an algorithm to achieve information collection and processing.

[0010] Furthermore, a laser light source module, an erbium-doped fiber amplifier, a power drive board and a motor drive module are also arranged in the installation slot. A balance detector is arranged on the power drive board, and the balance detector is electrically connected to the stabilizer. The laser light source module and the erbium-doped fiber amplifier are respectively arranged on the front and rear sides of the installation slot, and the motor drive module is electrically connected to the drive motor.

[0011] Based on the above, the erbium-doped fiber amplifier can significantly amplify the optical signal to meet the signal strength requirements of the long-distance, large-capacity optical fiber communication system, and the motor drive module is used to control the operation of the drive motor.

[0012] Furthermore, the edges of the top cover and the lower cover are both provided with sealing grooves, and a conductive sealing ring is provided in the sealing groove.

[0013] Based on the above, the conductive sealing ring can play a role of efficient sealing, and at the same time has the characteristics of high temperature resistance, low temperature resistance and vibration resistance. When it is below 0°, its volume change rate is less than 0.5%, which can ensure stability and reliability during use.

[0014] Furthermore, heat dissipation aluminum plate frames are provided on both sides of the interior of the rack body, and the erbium-doped fiber amplifier and the laser light source module are fixedly mounted on the rack body through the heat dissipation aluminum plate frames respectively.

[0015] Based on the above, the heat dissipation aluminum plate frame is in direct contact with the rack body, and can dissipate heat in time. At the same time, the heat dissipation aluminum plate frame is light in weight and has good rigidity, and can strengthen and fix both sides of the rack body to improve service life.

[0016] Furthermore, a silicone gasket is provided between the polarization-maintaining fiber acousto-optic modulator and the lower cover.

[0017] Based on the above, the polarization-maintaining fiber acousto-optic modulator will generate a large amount of heat during operation, and the silicone gasket has good thermal conductivity and can transfer the heat to the upper cover to achieve a heat dissipation effect. At the same time, the silicone gasket also has a good buffering effect and protects the polarization-maintaining fiber acousto-optic modulator.

[0018] Furthermore, an antenna module, a power interface and a signal transmission interface are provided at the left end of the rack body, the antenna module is electrically connected to the laser light source module, the power interface is electrically connected to the power driving board, the signal transmission interface is electrically connected to the erbium-doped fiber amplifier, and a lens adapter is provided at the right end of the rack body, an optical dustproof mirror is provided on the lens adapter, and a waterproof sealing ring is provided between the lens adapter and the optical dustproof mirror.

[0019] Based on the above, the optical dustproof mirror can protect the wedge-shaped mirror, and the waterproof sealing ring can play a role in waterproofing and dustproofing, thereby improving the overall sealing performance of the present invention.

[0020] Furthermore, the radar lens module is provided with an optical fiber signal line, an optical signal sending device, a lens barrel and the wedge-shaped mirror in sequence from bottom to top, and the optical fiber signal line is electrically connected to the laser light source module.

[0021] Based on the above, when performing detection work, the laser light source module outputs an optical signal to the optical fiber signal line, the optical fiber signal line transmits the optical signal to the optical signal sending device, the optical signal sending device receives the optical signal and emits laser, and the laser passes through the wedge mirror to form a refracted laser.

[0022] Furthermore, the stabilizer includes a main seat handle, a first arm, a second arm and a phase seat, the upper end of the main seat handle is provided with a first rotating motor, the first rotating motor is rotatably matched with one end of the first arm, the other end of the first arm is fixedly mounted with a second rotating motor, one end of the second arm is fixedly matched with a rotating shaft of the second rotating motor, the other end of the second arm is provided with a third rotating motor, the output shaft of the third rotating motor is fixedly matched with a slide, the slide is slidably matched with the phase seat, a locking switch for locking the slide is provided on the phase seat, and the phase seat is fixedly mounted with the wind measuring radar body through a mounting plate.

[0023] Based on the above, the stabilizer can be adjusted in multiple angles and directions, so that the wind measurement radar body can better maintain stability during operation.

[0024] In order to more clearly illustrate the above features of the present invention and its intended objectives, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 : It is a schematic diagram of the explosion structure of the wind measurement radar body of the present invention; Figure 2 : It is a schematic diagram of the exploded structure of the wind measurement radar body of the present invention without the top cover and the signal acquisition and processing module; Figure 3 : is a three-dimensional structural schematic diagram of the anemometer radar body of the present invention without the top cover and the signal acquisition and processing module; Figure 4 : is an exploded structural schematic diagram of the radar lens module of the present invention; Figure 5 : is an exploded structural schematic diagram of the top cover and the conductive sealing ring of the present invention; Figure 6 : is an exploded structural schematic diagram of the lower cover and the conductive sealing ring of the present invention; Figure 7 : is a top view of the frame body of the present invention; Figure 8 : is a three-dimensional structural schematic diagram of the frame body of the present invention; Fig. 9 : is a top view of the code disk of the present invention; Fig.10 : Three-dimensional structure schematic of the present invention Figure 1 ; Fig.11 : Three-dimensional structure schematic of the present invention Figure 2 ; Fig.12 : is a three-dimensional structural schematic diagram of the stabilizer of the present invention; Fig.13 : is a structural schematic diagram of the drive motor of the present invention; Fig.14 : is a structural schematic diagram of the present invention combined with the structure arranged at the upper end of the unmanned aerial vehicle; Fig.15 : is a structural schematic diagram of the present invention combined with the structure arranged at the lower end of the unmanned aerial vehicle.

[0026] Explanation of the reference numerals in the drawings: 1 anemometer radar body; 2 stabilizer; 3 top cover; 4 frame body; 5 lower cover; 6 installation groove; 7 radar lens module; 8 drive motor; 9 rotating shaft hole; 10 wedge-shaped mirror; 11 motor mounting bracket; 12 signal acquisition and processing module; 13 electrical interface; 14 heat dissipation plate; 15 polarization-maintaining fiber acousto-optic modulator; 16 code disk; 17 induction groove; 18 optoelectronic switch; 19 laser light source module; 20 erbium-doped fiber amplifier; 21 power drive board; 22 motor drive module; 23 sealing groove; 24 conductive sealing ring; 25 heat dissipation aluminum plate frame; 26 silicone gasket; 27 limit card slot; 28 fiber routing hole; 29 antenna module; 30 power interface; 31 signal transmission interface; 32 lens adapter port; 33 optical dust-proof mirror; 34 waterproof sealing ring; 35 fiber optic signal line; 36 optical signal transmitting device; 37 lens barrel; 38 main seat handle; 39 first arm rod; 40 second arm rod; 41 phase seat; 42 first rotating motor; 43 second rotating motor; 44 third rotating motor; 45 carriage; 46 locking switch; 47 mounting plate; 48 north-pointing device. DETAILED DESCRIPTION

[0027] like Figures 1 to 15 As shown, a lightweight airborne laser wind radar system includes a wind radar body 1 and a stabilizer 2 fixedly matched with the outer surface of the wind radar body 1. The wind radar body 1 includes a top cover 3, a frame body 4 and a lower cover 5 arranged in sequence from top to bottom. The top cover 3, the frame body 4 and the lower cover 5 are all made of 7075 aviation aluminum. The 7075 aviation aluminum has a high specific strength and can effectively reduce the weight of the structure. The frame body 4 is provided with a mounting groove 6 inside. The mounting groove 6 is provided with a radar lens module 7, a laser light source module 19, an erbium-doped fiber amplifier 20, a power drive board 21 and a motor drive module 22. The front end of the radar lens module 7 is provided with a drive motor 8 and a motor mounting bracket 11. The drive motor 8 is a servo motor, which is an outsourced part, such as Fig.13 As shown. A shaft hole 9 is provided on the central axis of the driving motor 8, and a wedge mirror 10 is fixedly matched to the shaft hole 9. The wedge mirror 10 is used to realize optical deflection. The driving motor 8 is installed on the radar lens module 7 through the motor mounting bracket 11. The motor driving module 22 is electrically connected to the driving motor 8. The wedge mirror 10 is directly driven to rotate by the driving motor 8. Compared with the traditional transmission method through gears or synchronous belts, the demand for parts is reduced, which not only reduces the overall volume, but also reduces the weight. At the same time, the rotation speed of the wedge mirror 10 is accelerated, and the rotation speed is 2.5 seconds per circle, which improves the wind measurement efficiency and makes the information collection feedback more timely.

[0028] The top cover 3 is fixedly mounted with a signal acquisition and processing module 12 by screws, and the signal acquisition and processing module 12 is provided with a number of electrical interfaces 13, and the electrical interfaces 13 include Ethernet, power interface, and SMA interface. The signal acquisition and processing module 12 is electrically connected with other modules through the electrical interface 13, and the signal acquisition and processing module 12 is fixedly mounted on the top cover 3, which can not only make the structure installation more compact, but also solve the heat dissipation problem. A heat sink 14 is provided at the bottom of the mounting groove 6, and a polarization-maintaining fiber acousto-optic modulator 15 is installed on the inner side of the lower cover 5, and the heat sink 14 extends to the area of ​​the polarization-maintaining fiber acousto-optic modulator 15 to optimize heat dissipation management. The polarization-maintaining fiber acousto-optic modulator 15 combines the stable polarization-maintaining characteristics of the polarization-maintaining fiber with the efficient modulation capability of the acousto-optic effect, and can achieve precise modulation of the frequency, amplitude or phase of the optical signal while maintaining the polarization state of the optical signal.

[0029] Preferably, Figure 4 and Fig. 9As shown, the lower end of the driving motor 8 is equipped with a code disc 16, and the code disc 16 is provided with a sensing slot 17, and the motor mounting frame 11 is provided with a photoelectric switch 18 for detecting the sensing slot 17. When performing laser wind measurement detection, the driving motor 8 rotates with the wedge mirror 10, and the code disc 16 also rotates. When the sensing slot 17 passes through the photoelectric switch 18, the photoelectric switch 18 will sense the sensing slot 17, and this point will be used as the origin. The wedge mirror 10 will pass through four points in a circle, and four refracted lasers in different directions will be generated at the positions of these four points. The reflection signals of the four beam lasers are combined with algorithms to realize information collection and processing.

[0030] Preferably, a balance detector is provided on the power drive board 21, and the balance detector is electrically connected to the stabilizer 2. The balance detector cooperates with the stabilizer 2 to adjust the position and angle of the wind radar body 1 in real time, thereby improving the stability of detection and the accuracy of collected signals.

[0031] Preferably, Figure 5 and Figure 6 As shown, the edges of the top cover 3 and the lower cover 5 are both provided with a sealing groove 23, and a conductive sealing ring 24 is provided in the sealing groove 23. The conductive sealing ring 24 can play a role of efficient sealing, and has the characteristics of high temperature resistance, low temperature resistance and vibration resistance. When the temperature is below 0°, the volume change rate is less than 0.5%, which can ensure stability and reliability during use.

[0032] Preferably, Figure 2 and Figure 3 As shown, a heat dissipation aluminum plate frame 25 is also provided on the front and rear sides of the rack body 4, and the erbium-doped fiber amplifier 20 and the laser light source module 19 are respectively fixedly mounted on the rack body 4 through the heat dissipation aluminum plate frame 25. The heat dissipation aluminum plate frame 25 is in direct contact with the rack body 4, and can dissipate heat in time. At the same time, the heat dissipation aluminum plate frame 25 is light in weight and has good rigidity, and can strengthen and fix both sides of the rack body 4, thereby improving the stability of the wind measurement radar body 1.

[0033] Preferably, Figure 7 and Figure 8 As shown, the two sides of the upper end of the installation slot 6 are symmetrically provided with limit slots 27, and the limit slots 27 are milled by a T-shaped cutter, and a plurality of fiber holes 28 are provided on the heat dissipation plate 14. More structural modules can be installed in the installation slot 6 through the limit slots 27, thereby increasing the utilization space of the installation slot 6. Each module in the installation slot 6 needs to be connected by an optical fiber, and the fiber holes 28 are used for conducting and combing the optical fiber in the installation slot 6.

[0034] Preferably, Figure 1 and Figure 2 As shown, the left end of the rack body 4 is provided with an antenna module 29, a power interface 30 and a signal transmission interface 31, the antenna module 29 is electrically connected to the laser light source module 19, the power interface 30 is electrically connected to the power drive board 21, the signal transmission interface 31 is electrically connected to the erbium-doped fiber amplifier 20, and the right end of the rack body 4 is provided with a lens adapter 32, an optical dustproof mirror 33 is provided on the lens adapter 32, and a waterproof sealing ring 34 is provided between the lens adapter 32 and the optical dustproof mirror 33. The optical dustproof mirror 33 can protect the wedge mirror 10, and the waterproof sealing ring 34 can play a role in waterproofing and dustproofing, thereby improving the overall sealing of the wind measurement radar body 1.

[0035] Preferably, Figure 4 As shown, the radar lens module 7 is provided with an optical fiber signal line 35, an optical signal sending device 36, a lens barrel 37 and the wedge mirror 10 in order from bottom to top, and the optical fiber signal line 35 is electrically connected to the polarization-maintaining optical fiber acousto-optic modulator 15. When performing detection work, the laser transceiver processing unit outputs an optical signal to the optical fiber signal line 35, and the optical fiber signal line 35 transmits the optical signal to the optical signal sending device 36, and the optical signal sending device 36 receives the optical signal and emits laser light, and the laser light passes through the wedge mirror 10 to form a refracted laser light.

[0036] Preferably, Fig.12 As shown, the stabilizer 2 includes a main seat handle 38, a first arm 39, a second arm 40 and a phase seat 41. The upper end of the main seat handle 38 is provided with a first rotary motor 42, the first rotary motor 42 is rotatably matched with one end of the first arm 39, the other end of the first arm 39 is fixedly installed with a second rotary motor 43, one end of the second arm 40 is fixedly matched with the rotating shaft of the second rotary motor 43, the other end of the second arm 40 is provided with a third rotary motor 44, the output shaft of the third rotary motor 44 is fixedly matched with a slide 45, the slide 45 is slidably matched with the phase seat 41, the phase seat 41 is provided with a locking switch 46 for locking the slide 45, and the phase seat 41 is fixedly installed with the wind radar body 1 through a mounting plate 47. The stabilizer 2 can be adjusted in position at multiple angles and directions, so that the wind radar body 1 can better maintain stability during operation.

[0037] In summary, the wind measurement radar body 1 can reduce the overall volume and weight while ensuring the high performance detection characteristics of the laser wind measurement radar system. In terms of volume, the length of the wind measurement radar body 1 is reduced to 200 mm, and the width and height are both reduced to 110 mm. In terms of weight, the weight of the wind measurement radar body 1 can be reduced to 1.7 kg, and the weight of the stabilizer 2 is about 0.5 kg without a battery. Therefore, when the stabilizer 2 does not have a battery, the overall weight of the wind measurement radar body 1 and the stabilizer 2 is about 2.2 kg, and even with a battery, it can be maintained at about 3 kg.

[0038] In order to more intuitively reflect the comprehensive performance of the present invention, the following formula is proposed to express and define the comprehensive performance coefficient P: ; Where D is the lens aperture, and the detection distance of the present invention is proportional to the square of the lens aperture D; V represents volume, and W represents weight. According to the principle of three-dimensional scaling, the volume V and weight W are respectively proportional to the cube of the lens aperture D. α, β, and γ represent weight indexes, reflecting the priority of different parameters. Under the default situation (equal weight): α=2, β=1, γ=1 (the weight index can be adjusted according to different needs. For example, if you pay more attention to detection capability, you can increase the value of α; if you pay more attention to portability, you can increase the value of β or γ). It can be obtained from this: ; D 2 The value indirectly reflects the detection capability of the wind radar body 1; V W represents the comprehensive cost of volume and weight; the larger the value of the comprehensive performance coefficient P is, the better the comprehensive performance of the detection capability and portability of the wind measurement radar body 1 is.

[0039] Solution A: Assume D=50mm, V=1000cm, W=500g; Solution B: Assume D=40mm, V=512cm, W=300g; The calculations show that: ; .

[0040] By comparing the above scheme A and the scheme B, it can be seen that although the lens aperture D of scheme B is smaller than that of scheme A, the volume V and weight W are greatly reduced compared with scheme A, so that the comprehensive performance coefficient Pb of scheme B is greater than the comprehensive performance coefficient Pa of scheme A. The assembly method of the present invention can reduce the volume V and weight W without reducing the lens aperture D, so that it has higher comprehensive performance.

[0041] In order to eliminate the dimension difference, the data can be normalized, and the formula after processing is:

[0042] D0, V0 and W0 are the parameters of the benchmark lens. This formula can directly reflect the advantages and disadvantages of each parameter relative to the benchmark.

[0043] Due to the small size and light weight of the present invention, the present invention can be combined with a drone, and thus applied to the low-altitude economic field, emergency rescue field, and meteorological data collection field. The present invention can be installed on the upper end or lower end of the drone according to different operating environments. When the drone is performing low-altitude flight survey, the present invention can be installed on the upper end of the drone to achieve survey of the upper air environment of the drone, such as Fig.14 When the UAV is conducting high-altitude flight survey, the present invention can be installed at the lower end of the UAV to survey the lower half of the air environment of the UAV, such as Fig.15 As shown. Fig.14 or Fig.15 As shown, the wings of the drone are symmetrically provided with north-command devices 48. For the low-altitude economic field, the present invention can provide a refined dynamic wind field model for the aircraft by capturing the three-dimensional wind field data of the city in real time, so that it can predict and adjust the flight attitude, significantly improve flight safety, and ensure the orderly development of low-altitude economic activities. For the field of emergency rescue and disaster relief, for emergencies such as chemical leakage, biological and chemical threats, and nuclear pollution diffusion, the present invention can track the atmospheric diffusion trajectory of pollutants in real time, generate an accurate pollution migration model, provide key data support for personnel evacuation and emergency response, and minimize the risk of secondary disasters. For the field of meteorological data collection, the site selection of traditional wind farms relies on ground-based wind radar systems, which have the defects of long deployment cycle, large-scale solar power supply facilities, and limited monitoring range. In contrast, the present invention can realize the efficient collection of wide-area wind resource data, while reducing the deployment cost by 80%, and increasing the monitoring coverage area by several times.

[0044] The above description is only the optimal solution embodiment of the present invention and is not intended to limit the present invention. Various modifications or substitutions made by those skilled in the art to the present invention without departing from the essence and protection scope of the present invention should also be within the protection scope of the present invention.

Claims

1. A lightweight airborne laser wind radar system, characterized in that: The invention comprises a wind measuring radar body (1) and a stabilizer (2) fixedly matched with the outer surface of the wind measuring radar body (1), wherein the wind measuring radar body (1) comprises a top cover (3), a frame body (4) and a bottom cover (5) arranged in sequence from top to bottom, wherein a mounting groove (6) is arranged inside the frame body (4), and limit slots (27) are symmetrically arranged on both sides of the upper end of the mounting groove (6), and a radar lens module (7) is arranged in the mounting groove (6), and a driving motor (8) is arranged at the front end of the radar lens module (7), and a rotating shaft hole (27) is arranged on the central axis of the driving motor (8). 9), the rotating shaft hole (9) is fixedly fitted with a wedge mirror (10), the driving motor (8) is mounted on the radar lens module (7) via a motor mounting frame (11), a signal acquisition and processing module (12) is fixedly mounted on the top cover (3), a plurality of electrical interfaces (13) are arranged on the signal acquisition and processing module (12), a heat sink (14) is arranged at the bottom of the mounting groove (6), a polarization-maintaining fiber acousto-optic modulator (15) is arranged between the heat sink (14) and the lower cover (5), and a plurality of fiber routing holes (28) are arranged on the heat sink (14).

2. The lightweight airborne laser wind radar system according to claim 1, characterized in that: The lower end of the driving motor (8) is matched with a code disc (16), a sensing slot (17) is provided on the code disc (16), and a photoelectric switch (18) for detecting the sensing slot (17) is provided on the motor mounting frame (11).

3. The lightweight airborne laser wind radar system according to claim 1, characterized in that: The installation slot (6) is further provided with a laser light source module (19), an erbium-doped fiber amplifier (20), a power drive board (21) and a motor drive module (22); a balance detector is provided on the power drive board (21); the balance detector is electrically connected to the stabilizer (2); the laser light source module (19) and the erbium-doped fiber amplifier (20) are respectively provided on the front and rear sides of the installation slot (6); and the motor drive module (22) is electrically connected to the drive motor (8).

4. The lightweight airborne laser wind radar system according to claim 1, characterized in that: The mounting edges of the top cover (3) and the bottom cover (5) are both provided with sealing grooves (23), and a conductive sealing ring (24) is provided in the sealing grooves (23).

5. The lightweight airborne laser wind radar system according to claim 3, characterized in that: Heat dissipation aluminum plate frames (25) are also provided on both sides of the interior of the frame body (4), and the erbium-doped fiber amplifier (20) and the laser light source module (19) are fixedly mounted on the frame body (4) via the heat dissipation aluminum plate frames (25).

6. The lightweight airborne laser wind radar system according to claim 1, characterized in that: A silicone gasket (26) is provided between the polarization-maintaining optical fiber acousto-optic modulator (15) and the lower cover (5).

7. The lightweight airborne laser wind radar system according to claim 3, characterized in that: An antenna module (29), a power interface (30) and a signal transmission interface (31) are provided at the left end of the frame body (4); the antenna module (29) is electrically connected to the laser light source module (19); the power interface (30) is electrically connected to the power drive board (21); the signal transmission interface (31) is electrically connected to the erbium-doped fiber amplifier (20); a lens adapter (32) is provided at the right end of the frame body (4); an optical dustproof mirror (33) is provided on the lens adapter (32); and a waterproof sealing ring (34) is provided between the lens adapter (32) and the optical dustproof mirror (33).

8. The lightweight airborne laser wind radar system according to claim 3, characterized in that: The radar lens module (7) is provided with an optical fiber signal line (35), an optical signal sending device (36), a lens barrel (37) and the wedge-shaped mirror (10) in order from bottom to top, and the optical fiber signal line (35) is electrically connected to the laser light source module (19).

9. The lightweight airborne laser wind radar system according to claim 1, characterized in that: The stabilizer (2) comprises a main seat handle (38), a first arm (39), a second arm (40) and a phase seat (41); a first rotating motor (42) is arranged at the upper end of the main seat handle (38); the first rotating motor (42) is rotationally matched with one end of the first arm (39); a second rotating motor (43) is fixedly mounted on the other end of the first arm (39); one end of the second arm (40) is fixedly matched with a rotating shaft of the second rotating motor (43); a third rotating motor (44) is arranged at the other end of the second arm (40); a slide (45) is fixedly matched with an output rotating shaft of the third rotating motor (44); the slide (45) is slidably matched with the phase seat (41); a locking switch (46) for locking the slide (45) is arranged on the phase seat (41); and the phase seat (41) is fixedly mounted on the wind measuring radar body (1) via a mounting plate (47).

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