Airborne microwave radiometer

Abstract

The utility model relates to the technical field of microwave radiometers, and discloses an airborne microwave radiometer, which is formed by connecting a host and a flow guide cover, the upper end of the host is connected with an antenna reflection bin close to the flow guide cover, the antenna reflection bin is communicated with the inside of the host, and a microwave transmitting window is arranged in the antenna reflection bin. The main machine is provided with an inclined antenna feeder module below the antenna reflection bin, a microwave module, a signal processing module, an electric control module and a power supply module are sequentially installed in the main machine in the direction from the flow guide cover to the main machine, the microwave module is located beside the antenna feeder module, and one side of the outer wall of the main machine is fixedly connected with a hanging piece. According to the utility model, the protection cleaning mechanism which can be quickly disassembled and assembled is utilized to well protect and wipe the microwave-transmitting window when the microwave-transmitting window is not in operation, so that the normal operation of the microwave-transmitting window is ensured, the influence of signal attenuation on equipment is reduced, and the service life of the microwave-transmitting window is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of microwave radiometer technology, and in particular to an airborne microwave radiometer. Background Technology

[0002] Airborne microwave radiometers, mounted on aircraft, detect atmospheric radiation signals in the terahertz band to acquire meteorological parameters such as atmospheric temperature, humidity, and pressure over the aircraft's flight area in real time, as well as data such as liquid water content in clouds along the observation path and atmospheric integrated water vapor content. Airborne microwave radiometers receive microwave radiation signals from the atmosphere or the ground surface through an antenna reflector. Its core components include a reflector, a feed source, and a microwave-transmitting window (usually made of glass or composite materials).

[0003] Contaminants such as dust, oil, and salt crystals can alter the dielectric constant of the microwave transmission window, leading to signal scattering or absorption loss. Studies have shown that a 0.1 mm thick salt spray deposition can increase Ka-band signal attenuation by 0.5–1.2 dB.

[0004] Therefore, in order to facilitate effective protection of airborne microwave radiometers when they are not in operation and to facilitate quick cleaning of the window of the line reflection chamber, an airborne microwave radiometer is proposed. Utility Model Content

[0005] To address the technical challenges of protecting and cleaning airborne microwave radiometers, this invention provides an airborne microwave radiometer.

[0006] This utility model is achieved by the following technical solution: an airborne microwave radiometer, which is composed of a main unit and a flow guide connected together. An antenna reflector is connected to the upper end of the main unit near the flow guide. The antenna reflector is connected to the inside of the main unit and a microwave-transmitting window is installed inside the antenna reflector. An inclined antenna feed module is set below the antenna reflector in the main unit. A microwave module, a signal processing module, an electronic control module and a power supply module are installed in sequence from the flow guide towards the main unit inside the main unit. The microwave module is located next to the antenna feed module. A suspension component is fixedly connected to one side of the outer wall of the main unit.

[0007] The antenna reflector is equipped with a protective cleaning mechanism on top, which protects the antenna reflector when it is not in operation and can be quickly wiped by pressing.

[0008] As a further improvement to the above solution, the protective cleaning mechanism includes a rotating sleeve block installed on one side of the fixed rotating rod. The rotating sleeve block is rotatably connected to the fixed rotating rod, and a cover is fixedly connected to the top of the rotating sleeve block. After the cover is flipped over, it covers the top of the antenna reflector compartment.

[0009] As a further improvement to the above solution, a torsion spring is provided at the connection between the rotating sleeve and the fixed rotating rod to ensure that the cover stably covers the antenna reflector compartment.

[0010] As a further improvement to the above solution, a partition is fixedly connected to the middle of the cover, which divides the cover into an upper space and a lower space. A movable hole is opened in the middle of the partition, and an adhesive plate is rotatably connected to the bottom of the partition. A round protrusion is fixedly connected to the middle of the adhesive plate, and the round protrusion rotates in the movable hole.

[0011] As a further improvement to the above solution, a wiping cloth is attached to the bottom of the adhesive board, with the bottom of the wiping cloth abutting against the microwave window, and the wiping cloth moving in the lower space.

[0012] As a further improvement to the above solution, a pressing block is vertically slidably connected to the top center of the cover, and vertical side grooves are opened on both sides of the pressing block. A slider is fixedly connected to the bottom of the inner wall of the pressing block, and a spring is connected between the bottom end of the pressing block and the top of the partition. The pressing block and the spring move in the upper space.

[0013] As a further improvement to the above solution, a spiral groove is provided on the outer wall of the circular protrusion. The spiral groove is slidably connected to the slider and is used to drive the entire adhesive plate to rotate when the pressing block is pressed, and to wipe the microwave window with a wiping cloth.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (I) This utility model utilizes a quick-release protective cleaning mechanism, which can effectively protect and wipe the microwave-transparent window when it is not in operation, thereby ensuring the normal operation of the microwave-transparent window, reducing the impact of signal attenuation on the equipment, and improving the service life of the microwave-transparent window.

[0016] (II) This utility model adopts a passive detection system, which has advantages such as small size, low power consumption and real-time performance. It has inherent advantages in airborne platform application and can provide support for the establishment of a domestically produced airborne cloud physical detection system that can be commercially applied.

[0017] (III) The airborne microwave radiometer of this invention can continuously and in real-time detect information such as the relative humidity profile, total liquid water content along the flight path, and atmospheric water vapor content within the vertical direction within the flight range, all under all weather conditions. The system is highly automated, with software data analysis and graphical display functions, and can achieve barrier-free real-time data transmission over a local area network, supporting multi-terminal, real-time, and continuous observation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an airborne microwave radiometer according to the present invention.

[0019] Figure 2 This is a schematic diagram of the installation state structure of the protective cleaning mechanism of this utility model;

[0020] Figure 3This is a schematic diagram of the internal unit module of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the protective cleaning mechanism of this utility model;

[0022] Figure 5 This utility model Figure 4 A magnified schematic diagram of the structure at point a.

[0023] Explanation of key symbols:

[0024] 1. Main unit; 2. Radiator; 3. Antenna reflector housing; 4. Suspension component; 5. Power supply module; 6. Electronic control module; 7. Signal processing module; 8. Microwave module; 9. Antenna feeder module; 10. Fixed rotating rod; 11. Rotating sleeve block; 12. Cover; 13. Partition plate; 14. Adhesive plate; 15. Wiping cloth; 16. Microwave-transparent window; 17. Round protrusion; 18. Spiral groove; 19. Slider; 20. Pressing block; 21. Spring; 22. Side groove. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Example: Please refer to Figures 1-5 An airborne microwave radiometer according to this embodiment:

[0027] It consists of a main unit 1 and a fairing 2. An antenna reflector 3 is connected to the upper end of the main unit 1 near the fairing 2. The antenna reflector 3 is connected to the interior of the main unit 1, and a microwave-transparent window 16 is installed inside the antenna reflector 3. An inclined antenna feed module 9 is set below the antenna reflector 3 in the main unit 1. A microwave module 8, a signal processing module 7, an electronic control module 6, and a power supply module 5 are installed in the main unit 1 from the fairing 2 toward the main unit 1. The microwave module 8 is located next to the antenna feed module 9. A suspension component 4 is fixedly connected to one side of the outer wall of the main unit 1.

[0028] The antenna reflector compartment 3 is equipped with a protective cleaning mechanism on its top, which is used to protect the antenna reflector compartment 3 when it is not in operation, and can be quickly wiped by pressing.

[0029] Specifically, the main unit 1 and the suspension structure 4 are connected together by ten M6 hexagon screws, and the fairing 2 and the main unit 1 are firmly fixed together by ten M5 countersunk screws.

[0030] The protective cleaning mechanism includes a rotating sleeve block 11 installed on one side of the fixed rotating rod 10. The rotating sleeve block 11 is rotatably connected to the fixed rotating rod 10. A cover 12 is fixedly connected to the top of the rotating sleeve block 11. After the cover 12 is flipped over, it covers the top of the antenna reflector compartment 3.

[0031] A torsion spring is provided at the connection between the rotating sleeve 11 and the fixed rotating rod 10 to ensure that the cover 12 stably covers the antenna reflector compartment 3.

[0032] A partition 13 is fixedly connected to the middle of the cover 12, which divides the cover 12 into an upper space and a lower space. A movable hole is provided in the middle of the partition 13. An adhesive plate 14 is rotatably connected to the bottom of the partition 13. A round protrusion 17 is fixedly connected to the middle of the adhesive plate 14, and the round protrusion 17 rotates in the movable hole.

[0033] A wiping cloth 15 is attached to the bottom of the adhesive plate 14. The bottom of the wiping cloth 15 abuts against the microwave window 16, and the wiping cloth 15 moves in the lower space.

[0034] A pressing block 20 is vertically slidably connected to the top center of the cover 12. Vertical side grooves 22 are opened on both sides of the pressing block 20. A slider 19 is fixedly connected to the bottom of the inner wall of the pressing block 20. A spring 21 is connected between the bottom of the pressing block 20 and the top of the partition 13. The pressing block 20 and the spring 21 move in the upper space.

[0035] The outer wall of the round protrusion 17 has a spiral groove 18, which is slidably connected to the slider 19. When the pressing block 20 is pressed, it drives the entire adhesive plate 14 to rotate and uses the wiping cloth 15 to wipe the microwave window 16.

[0036] Among them, the wiping cloth 15 is an antistatic transparent cloth (such as carbon fiber composite fabric) that can take into account both electromagnetic compatibility (shielding effectiveness ≤0.1dB) and physical protection (tensile strength >500N / m); and it needs to be breathable to prevent moisture retention, while its UV resistance performance needs to be verified by QUV accelerated aging test.

[0037] Furthermore, the overall equipment data is as follows:

[0038] Weight (user coverage) = 12.047 kg;

[0039] Volume = 2,764,872.861 cubic millimeters;

[0040] Surface area = 949093.088 square millimeters;

[0041] Center of gravity: (mm) X = 21.090; Y = -3.124; Z = 292.866.

[0042] The implementation principle of an airborne microwave radiometer in this application embodiment is as follows:

[0043] After the host 1 is connected to the aircraft, it receives microwaves during the flight of the aircraft in conjunction with the antenna feed module 9 and the antenna reflector 3, and receives and processes them in conjunction with the signal processing module 7.

[0044] When no testing is required, the fixed rotating rod 10, rotating sleeve 11 and cover 12 need to be installed on the outer wall of the antenna reflector 3. Then, the entire cover 12 will be pushed against the antenna reflector 3 by the elasticity of the torsion spring, completing the coverage of the microwave window 16. At this time, the wiping cloth 15 will abut against the outer end of the microwave window 16. By pressing the pressing block 20 vertically downward, the entire round protrusion 17 can be rotated along the path of the spiral groove 18 under the sliding connection of the side groove 22 and the slider 19, and the wiping cloth 15 attached to the bottom end will wipe the microwave window 16.

[0045] When replacing the wiping cloth 15, the cover 12 must be opened first and the cover sealing the microwave window 16 must be removed. Then, the adhesive (including but not limited to Velcro) between the wiping cloth 15 and the adhesive plate 14 must be peeled off downwards. Replace the wiping cloth 15 with a new one to ensure the protective and cleaning effects and to ensure the effective use of the microwave window 16.

[0046] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An airborne microwave radiometer, characterized in that, It consists of a main unit and a fairing. An antenna reflector is connected to the upper part of the main unit near the fairing. The antenna reflector is connected to the inside of the main unit and a microwave-transparent window is installed inside the antenna reflector. The main unit is located below the antenna reflector and has an inclined antenna feed module. Inside the main unit, from the fairing to the main unit, a microwave module, a signal processing module, an electronic control module and a power supply module are installed in sequence. The microwave module is located next to the antenna feed module. A suspension device is fixedly connected to one side of the outer wall of the main unit. The antenna reflector is equipped with a protective cleaning mechanism on top, which protects the antenna reflector when it is not in operation and can be quickly wiped by pressing.

2. The airborne microwave radiometer as described in claim 1, characterized in that, The protective cleaning mechanism includes a rotating sleeve block installed on one side of a fixed rotating rod. The rotating sleeve block is rotatably connected to the fixed rotating rod, and a cover is fixedly connected to the top of the rotating sleeve block. After the cover is flipped over, it covers the top of the antenna reflector compartment.

3. The airborne microwave radiometer as described in claim 2, characterized in that, A torsion spring is provided at the connection between the rotating sleeve and the fixed rotating rod to ensure that the cover stably covers the antenna reflector compartment.

4. The airborne microwave radiometer as described in claim 3, characterized in that, A partition is fixedly connected to the middle of the cover, which divides the cover into an upper space and a lower space. A movable hole is provided in the middle of the partition. An adhesive plate is rotatably connected to the bottom of the partition. A round protrusion is fixedly connected to the middle of the adhesive plate and rotates within the movable hole.

5. An airborne microwave radiometer as described in claim 4, characterized in that, A wiping cloth is attached to the bottom of the adhesive plate, and the bottom of the wiping cloth abuts against the microwave-transparent window, with the wiping cloth moving freely in the lower space.

6. An airborne microwave radiometer as described in claim 4, characterized in that, A pressing block is vertically slidably connected to the top center of the cover. Vertical side grooves are opened on both sides of the pressing block. A slider is fixedly connected to the bottom of the inner wall of the pressing block. A spring is connected between the bottom of the pressing block and the top of the partition. The pressing block and the spring move in the upper space.

7. An airborne microwave radiometer as described in claim 4, characterized in that, The outer wall of the circular protrusion has a spiral groove, which is slidably connected to the slider. It is used to drive the entire adhesive plate to rotate when the pressing block is pressed, and to wipe the microwave window with a wiping cloth.

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