Ship navigation low-sidelobe radar antenna

Abstract

The invention relates to a ship navigation low-sidelobe radar antenna, and belongs to the technical field of radar antennae, the ship navigation low-sidelobe radar antenna comprises a bottom plate, an antenna and a function module, a radar control box is fixedly mounted on the upper surface of the bottom plate, a circuit board is fixedly mounted in the radar control box, and a U-shaped connecting frame is fixedly mounted on the surface of the circuit board; strip-shaped clamping grooves and two fixing grooves are formed in the surfaces of the opposite sides of the inner side of the U-shaped connecting frame, clamping blocks are fixedly installed on the surfaces of the opposite sides of the functional modules, and the surfaces of the functional modules are sleeved with two rectangular frames. When the ship navigation low-sidelobe radar antenna is used, the function module can be clamped on the circuit board through the U-shaped connecting frame and the clamping block, and the rectangular frame is moved to enable the fixing bolt to be inserted into the fixing groove to fix the position of the function module, so that the connection and installation of the function module can be completed; the function module can be conveniently replaced according to requirements, and the use flexibility of the radar antenna is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of radar antennas, and in particular to a low-sidelobe radar antenna for ship navigation. Background Art

[0002] Low sidelobe radar antenna plays an important role in ship navigation. Compared with traditional radar antennas, low sidelobe antennas can effectively reduce the strength of sidelobes, thereby reducing interference with other signals and improving the accuracy and reliability of target detection. Low sidelobe antennas are designed to reduce the gain of sidelobes, making the main lobe signal more prominent and reducing interference from other directions. Due to the suppression of sidelobes, low sidelobe radar antennas can provide higher angular resolution, helping ships to more clearly identify surrounding targets. In complex marine environments, low sidelobe antennas can effectively suppress interference signals from other ships or marine facilities. They are suitable for various climates and sea conditions and can maintain good performance under harsh conditions.

[0003] However, existing radar antennas adopt an integrated design, which is difficult to customize according to specific needs during actual use. Users cannot easily adjust or replace some functions according to different application scenarios. When the system fails, it is very difficult to locate the problem, and it is not convenient to disassemble and maintain the faulty module. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a low sidelobe radar antenna for ship navigation, which has the advantage of easy replacement and maintenance of functional modules, and solves the problem that the existing radar antenna adopts an integrated design, is difficult to customize according to specific needs during actual use, and users cannot easily adjust or replace some functions according to different application scenarios. When a system fails, it is very difficult to locate the problem and it is inconvenient to disassemble and maintain the faulty module.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low sidelobe radar antenna for ship navigation, comprising a base plate, an antenna and a functional module, a radar control box is fixedly installed on the upper surface of the base plate, a circuit board is fixedly installed inside the radar control box, a U-shaped connecting frame is fixedly installed on the surface of the circuit board, a strip-shaped card slot and two fixing slots are provided on the opposite side surface of the inner side of the U-shaped connecting frame, a card block is fixedly installed on the opposite side surface of the functional module, two rectangular frames are sleeved on the surface of the functional module, a fixing pin is fixedly installed on the surface of the rectangular frame, and an antenna adjustment component is provided between the radar control box and the antenna.

[0006] Furthermore, the length of the functional module is matched with the inner width of the U-shaped connecting frame, the card block is matched with the strip-shaped card slot, and the fixed pin is matched with the fixed slot.

[0007] The beneficial effect of adopting the above further solution is that it is easy to install the functional module inside the U-shaped connecting frame.

[0008] Furthermore, a limiting ring is fixedly installed on the surface of the functional module, and the inner dimension of the rectangular frame is smaller than the outer dimension of the limiting ring.

[0009] The beneficial effect of adopting the above further solution is that by providing a limiting ring on the surface of the functional module, the rectangular frame can be prevented from falling off the surface of the functional module.

[0010] Furthermore, the bottom plate surface is provided with four fixing holes, and the four fixing holes are evenly distributed on the bottom plate surface.

[0011] The beneficial effect of adopting the above further solution is that by providing fixing holes on the surface of the bottom plate, the bottom plate can be fixed through the fixing holes during use, which is conducive to fixing the bottom plate at a specified position.

[0012] Furthermore, the antenna adjustment assembly includes a motor fixedly mounted on the top of the radar control box, a rotating shaft fixedly mounted on the output end of the motor, a connecting disk fixedly mounted on the top of the rotating shaft, a supporting plate fixedly mounted on the top of the connecting disk, an electric telescopic rod and a connecting frame fixedly mounted on the upper surface of the supporting plate, a connecting rod rotatably mounted on the top of the connecting frame, one end of the connecting rod is fixedly connected to the antenna surface, a cross bar is fixedly mounted on the antenna surface, a connecting block is rotatably mounted on the end of the cross bar away from the antenna, and the connecting block is fixedly mounted on the top of the electric telescopic rod.

[0013] The beneficial effect of adopting the above further solution is: by providing an antenna adjustment component, the elevation angle and direction of the antenna can be adjusted during use, so that the antenna can better receive signals.

[0014] Furthermore, a limit ring is fixedly installed on the side surface of the radar control box, a limit groove is provided on the side surface of the limit ring, a sleeve is fixedly installed on the side surface of the support plate, a hollow cylinder is fixedly installed on the bottom surface of the sleeve, a top spring is fixedly installed inside the hollow cylinder, a connecting column is fixedly installed at one end of the top spring, a limit rod is fixedly installed on the end of the connecting column away from the top spring and passes through the outer surface of the hollow cylinder, and the limit rod is inserted into the limit groove.

[0015] The beneficial effect of adopting the above further solution is that the radar control box and the support plate can be connected through the sleeve and the limit ring, which can improve the stability of the support plate when it rotates.

[0016] Furthermore, a pull rod penetrating to the outer surface of the hollow cylinder is fixedly installed on one end of the connecting column away from the limiting rod, and a pull ring is fixedly installed on one end of the pull rod away from the connecting column.

[0017] The beneficial effect of adopting the above further solution is that by providing a pull rod and a pull ring, the connecting column and the limiting rod can be pulled to move during use.

[0018] Furthermore, a first circular hole is formed on one end surface of the hollow cylinder close to the limiting ring, the limiting rod is located inside the first circular hole, and the outer surface of the limiting rod is in sliding contact with the inner surface of the first circular hole.

[0019] The beneficial effect of adopting the above further solution is that it is easy for the limiting rod to move telescopically inside the hollow cylinder.

[0020] Furthermore, a second circular hole is formed on the surface of one end of the hollow cylinder away from the first circular hole, the pull rod is located inside the second circular hole, and the outer surface of the pull rod is in sliding contact with the inner surface of the second circular hole.

[0021] The beneficial effect of adopting the above further solution is that the pull rod is easy to move and retract inside the hollow cylinder.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] 1. When the ship navigation low sidelobe radar antenna is used, the function module can be connected to the circuit board through the U-shaped connecting frame and the card block. The rectangular frame is moved to insert the fixing pin into the fixing groove to fix the position of the function module, so that the connection and installation of the function module can be completed, which is convenient for replacing the function module according to needs, greatly improving the flexibility of the use of the radar antenna, and solving the problem that the existing radar antenna adopts an integral design and is difficult to customize according to specific needs during actual use. Users cannot easily adjust or replace some functions according to different application scenarios. When the system fails, it is very difficult to locate the problem and it is not convenient to disassemble and maintain the faulty module.

[0024] 2. The ship navigation low sidelobe radar antenna is equipped with an electric telescopic rod, a cross bar, a connecting frame and a connecting rod. The elevation angle of the antenna can be adjusted when in use. The motor and the rotating shaft can drive the support plate and the antenna to rotate, so that the antenna can face different angles, which greatly improves the signal receiving range of the antenna and is conducive to reducing the blind spot direction of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structural connection block of the present invention;

[0027] Figure 3 This is a schematic diagram of the structural circuit board of the present invention;

[0028] Figure 4This is a schematic diagram of a U-shaped connecting frame of the present invention;

[0029] Figure 5 It is a schematic diagram of the structural function modules of the present invention;

[0030] Figure 6 The structure of the present invention Figure 1 The enlarged schematic diagram at A in the middle;

[0031] Figure 7 It is a schematic diagram of the structural base plate of the present invention.

[0032] In the figure: 1. bottom plate; 2. antenna; 3. functional module; 4. radar control box; 5. circuit board; 6. U-shaped connecting frame; 7. strip card slot; 8. fixing slot; 9. card block; 10. rectangular frame; 11. fixing pin; 12. limiting ring; 13. fixing hole; 14. motor; 15. rotating shaft; 16. connecting plate; 17. supporting plate; 18. electric telescopic rod; 19. connecting frame; 20. connecting rod; 21. cross bar; 22. connecting block; 23. limiting ring; 24. limiting slot; 25. sleeve; 26. hollow cylinder; 27. top spring; 28. connecting column; 29. ​​limiting rod; 30. pull rod; 31. pull ring; 32. first circular hole; 33. second circular hole. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 7In this embodiment, a ship navigation low sidelobe radar antenna comprises a bottom plate 1, an antenna 2 and a functional module 3. A radar control box 4 is fixedly installed on the upper surface of the bottom plate 1. A circuit board 5 is fixedly installed inside the radar control box 4. A U-shaped connecting frame 6 is fixedly installed on the surface of the circuit board 5. A strip card slot 7 and two fixing slots 8 are provided on the surface of the inner side of the U-shaped connecting frame 6. A card block 9 is fixedly installed on the surface of the opposite side of the functional module 3. Two rectangular frames 10 are sleeved on the surface of the functional module 3. A fixing pin 11 is fixedly installed on the surface of the rectangular frame 10. The length of the functional module 3 is adapted to the inner width of the U-shaped connecting frame 6. The card block 9 It is adapted to the bar slot 7, and the fixed pin 11 is adapted to the fixed slot 8, so that the functional module 3 can be installed on the inner side of the U-shaped connecting frame 6. A limiting ring 12 is fixedly installed on the surface of the functional module 3. The inner size of the rectangular frame 10 is smaller than the outer size of the limiting ring 12. By arranging the limiting ring 12 on the surface of the functional module 3, the rectangular frame 10 can be prevented from falling off the surface of the functional module 3. Four fixing holes 13 are opened on the surface of the bottom plate 1, and the four fixing holes 13 are evenly distributed on the surface of the bottom plate 1. By arranging the fixing holes 13 on the surface of the bottom plate 1, the bottom plate 1 can be fixed through the fixing holes 13 when in use, which is beneficial to fix the bottom plate 1 at a specified position.

[0035] An antenna adjustment assembly is provided between the radar control box 4 and the antenna 2. The antenna adjustment assembly includes a motor 14 fixedly mounted on the top of the radar control box 4. A rotating shaft 15 is fixedly mounted on the output end of the motor 14. A connecting disk 16 is fixedly mounted on the top of the rotating shaft 15. A supporting plate 17 is fixedly mounted on the top of the connecting disk 16. An electric telescopic rod 18 and a connecting frame 19 are fixedly mounted on the upper surface of the supporting plate 17. A connecting rod 20 is rotatably mounted on the top of the connecting frame 19. One end of the connecting rod 20 is fixedly connected to the surface of the antenna 2. A cross bar 21 is fixedly mounted on the surface of the antenna 2. A connecting block 22 is rotatably mounted on the end of the cross bar 21 away from the antenna 2. The connecting block 22 is fixedly mounted on the top of the electric telescopic rod 18. By setting the antenna adjustment assembly, the elevation angle and direction of the antenna 2 can be adjusted during use, so that the antenna 2 can better receive signals and help reduce the blind direction of the ship. A limiting ring 23 is fixedly mounted on the side surface of the radar control box 4. A limiting groove 24 is provided on the side surface of the limiting ring 23. A sleeve 25 is fixedly mounted on the side surface of the supporting plate 17. A hollow cylinder 26 is fixedly installed on the bottom surface of 25, a top spring 27 is fixedly installed inside the hollow cylinder 26, a connecting column 28 is fixedly installed on one end of the top spring 27, a limiting rod 29 that penetrates the outer surface of the hollow cylinder 26 is fixedly installed on the end of the connecting column 28 away from the top spring 27, and the limiting rod 29 is inserted into the limiting groove 24. The radar control box 4 and the support plate 17 can be connected through the sleeve 25 and the limiting ring 23, which can improve the stability of the support plate 17 when rotating. The connecting column 28 is fixedly installed on one end away from the limiting rod 29. A pull rod 30 is installed which passes through the outer surface of the hollow cylinder 26. A pull ring 31 is fixedly installed on one end of the pull rod 30 away from the connecting column 28. By setting the pull rod 30 and the pull ring 31, the connecting column 28 and the limit rod 29 can be pulled to move during use. A first circular hole 32 is opened on the surface of one end of the hollow cylinder 26 close to the limit ring 23. The limit rod 29 is located on the inner side of the first circular hole 32. The outer surface of the limit rod 29 is in sliding contact with the inner surface of the first circular hole 32, which facilitates the telescopic movement of the limit rod 29 inside the hollow cylinder 26.

[0036] It should be noted that the antenna 2 in this embodiment is a waveguide slot antenna, and array beamforming is a technology that forms a beam of a specific shape in space by adjusting the phase and amplitude of each element in the array. This technology is widely used in wireless communications, radar, sonar and other fields. Its main purpose is to enhance the gain in the direction of the desired signal, while suppressing interference or noise in other undesired directions to improve the performance of the system.

[0037] Phase control: By precisely controlling the transmission or reception phase of each element in the array, the waves emitted by each element can be superimposed on each other in space, forming constructive interference in the main lobe direction and destructive interference in the non-main lobe direction.

[0038] Amplitude control: Adjusting the transmit or receive amplitude of each element can further optimize the shape of the beam and reduce the amplitude of the side lobes.

[0039] The optimal weight coefficients are calculated using optimization algorithms (such as minimizing the sidelobe level, minimum variance distortion-free response (MVDR), etc.), and these weight coefficients are used to adjust the transmission or reception characteristics of each array element.

[0040] The working principle of the above embodiment is:

[0041] When in use, the card block 9 on the surface of the functional module 3 is inserted into the strip card slot 7 so that the fixing pin 11 corresponds to the fixing slot 8. By moving the rectangular frame 10, the fixing pin 11 on the rectangular frame 10 is inserted into the fixing slot 8, and the functional module 3 can be fixed on the inner side of the U-shaped connecting frame 6. It is convenient and quick to use. When adjusting the antenna 2, the electric telescopic rod 18 drives the cross bar 21 to rotate, and the antenna 2 rotates along the cross bar 21. The antenna 2 rotates along the connecting frame 19 and the connecting rod 20, and the elevation angle of the antenna 2 can be adjusted. The motor 14 and the rotating shaft 15 drive the support plate 17 to rotate, so that the antenna 2 rotates synchronously with the support plate 17, and the direction of the antenna 2 can be adjusted. When the support plate 17 rotates, the limit rod 29 rotates along the limit groove 24 on the surface of the limit ring 23, so as to improve the stability of the support plate 17 when rotating. The limit rod 29 can be pulled out of the limit groove 24 by the top spring 27, so as to facilitate the separation of the sleeve 25 from the limit ring 23.

[0042] The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low sidelobe radar antenna for ship navigation, comprising a base plate (1), an antenna (2) and a functional module (3), characterized in that: A radar control box (4) is fixedly mounted on the upper surface of the base plate (1), a circuit board (5) is fixedly mounted inside the radar control box (4), a U-shaped connecting frame (6) is fixedly mounted on the surface of the circuit board (5), a strip-shaped card slot (7) and two fixing slots (8) are provided on the inner side opposite to the surface of the U-shaped connecting frame (6), a card block (9) is fixedly mounted on the opposite side of the functional module (3), two rectangular frames (10) are sleeved on the surface of the functional module (3), and a fixing pin (11) is fixedly mounted on the surface of the rectangular frame (10), and an antenna adjustment component is provided between the radar control box (4) and the antenna (2).

2. A low sidelobe radar antenna for ship navigation according to claim 1, characterized in that: The length of the functional module (3) is matched with the inner width of the U-shaped connecting frame (6), the card block (9) is matched with the strip card slot (7), and the fixed latch (11) is matched with the fixed slot (8).

3. A low sidelobe radar antenna for ship navigation according to claim 1, characterized in that: A limiting ring (12) is fixedly mounted on the surface of the functional module (3), and the inner dimension of the rectangular frame (10) is smaller than the outer dimension of the limiting ring (12).

4. A low sidelobe radar antenna for ship navigation according to claim 1, characterized in that: Four fixing holes (13) are provided on the surface of the bottom plate (1), and the four fixing holes (13) are evenly distributed on the surface of the bottom plate (1).

5. The low sidelobe radar antenna for ship navigation according to claim 1, characterized in that: The antenna adjustment assembly comprises a motor (14) fixedly mounted on the top of a radar control box (4); a rotating shaft (15) is fixedly mounted on the output end of the motor (14); a connecting plate (16) is fixedly mounted on the top of the rotating shaft (15); a supporting plate (17) is fixedly mounted on the top of the connecting plate (16); an electric telescopic rod (18) and a connecting frame (19) are fixedly mounted on the upper surface of the supporting plate (17); a connecting rod (20) is rotatably mounted on the top of the connecting frame (19); one end of the connecting rod (20) is fixedly connected to the surface of the antenna (2); a cross bar (21) is fixedly mounted on the surface of the antenna (2); a connecting block (22) is rotatably mounted on the end of the cross bar (21) away from the antenna (2); and the connecting block (22) is fixedly mounted on the top of the electric telescopic rod (18).

6. A low sidelobe radar antenna for ship navigation according to claim 5, characterized in that: A limit ring (23) is fixedly installed on the side surface of the radar control box (4), and a limit groove (24) is provided on the side surface of the limit ring (23); a sleeve (25) is fixedly installed on the side surface of the support plate (17); a hollow tube (26) is fixedly installed on the bottom surface of the sleeve (25); a top spring (27) is fixedly installed inside the hollow tube (26); a connecting column (28) is fixedly installed at one end of the top spring (27); a limit rod (29) is fixedly installed at one end of the connecting column (28) away from the top spring (27) and passes through the outer surface of the hollow tube (26); and the limit rod (29) is inserted into the limit groove (24).

7. A low sidelobe radar antenna for ship navigation according to claim 6, characterized in that: A pull rod (30) penetrating the outer surface of the hollow cylinder (26) is fixedly installed on one end of the connecting column (28) away from the limiting rod (29), and a pull ring (31) is fixedly installed on one end of the pull rod (30) away from the connecting column (28).

8. The low sidelobe radar antenna for ship navigation according to claim 5, characterized in that: A first circular hole (32) is formed on one end surface of the hollow cylinder (26) close to the limiting ring (23); the limiting rod (29) is located inside the first circular hole (32); and the outer surface of the limiting rod (29) is in sliding contact with the inner surface of the first circular hole (32).

9. A low sidelobe radar antenna for ship navigation according to claim 8, characterized in that: A second circular hole (33) is formed on one end surface of the hollow cylinder (26) away from the first circular hole (32); the pull rod (30) is located inside the second circular hole (33); and the outer surface of the pull rod (30) is in sliding contact with the inner surface of the second circular hole (33).

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