Omnidirectional detection early warning radar antenna unit

Abstract

The utility model relates to the technical field of radars, and discloses an omnidirectional detection early warning radar antenna unit comprising a pod main body which is internally provided with an antenna array unit which is provided with a plurality of antenna unit array planes used for transmitting radar signals and receiving echo signals; the servo units are arranged at the two ends of the antenna array unit in the axial direction and used for rotationally installing the antenna array unit in a pod body of the pod body and driving the antenna array unit to rotate around a shaft; the environmental control cooling unit is used for controlling environmental parameters of the pod main body; the antenna control unit, the antenna array unit and the servo unit are all in signal connection with the antenna control unit, and the environment control cooling unit and the antenna control unit are arranged in fairings at the two ends of the pod body. Therefore, the method has omnidirectional coverage detection capability, is flexible in direction and quick in response, can identify and track a plurality of targets at the same time, and is high in environmental adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to radar technical field more specifically, relate to a kind of omni-directional detection early warning radar antenna unit. BACKGROUND

[0002] Early warning radar antenna unit mainly includes balance wood type radar antenna and disc type radar antenna. Among them, balance wood type radar antenna is equipped with two symmetrical balance wood arms, one balance wood arm is used to emit radar signal, and the other balance wood arm is used to receive echo signal, its structure is simple, quality is lighter and is dispersed along length direction, and it has less influence on airborne structure, low manufacturing cost, easy to install and maintain, but there are problems such as limited dynamic range, no coverage or poor axial performance, low radiation efficiency, poor direction flexibility, poor anti-interference ability, stable mechanical structure, and need to meet specific safety angle requirements.

[0003] Disc type radar antenna is composed of disc of plane or sphere, and the antenna is placed in the center of the disc, so as to realize omni-directional monitoring of surrounding environment by horizontal rotation, and radar performance is consistent in each direction, but its rotation speed is limited, cannot quickly respond to sudden target, and mass is concentrated, has greater influence on airborne structure, and the flow field environment of radar antenna is complex and strong, which easily affects the aerodynamic performance of aircraft.

[0004] In summary, how to provide a kind of radar antenna unit capable of omni-directional monitoring and efficient response is the problem that the technical personnel in the prior art are anxious to solve at present. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims at providing a kind of omni-directional detection early warning radar antenna unit, which has omni-directional coverage detection capability, flexible direction, rapid response, can identify and track multiple targets simultaneously, and has strong environmental adaptability.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A kind of omni-directional detection early warning radar antenna unit, including pod main body, the pod main body is equipped with:

[0008] Antenna array unit, is equipped with multiple antenna unit arrays for emitting radar signal and receiving echo signal;

[0009] Servo unit, is located at the both ends of the axial direction of the antenna array unit, for rotating the antenna array unit to be installed in the pod cabin body of the pod main body, and drives the antenna array unit to rotate around the shaft;

[0010] Environmental control cooling unit, for controlling the environmental parameter of the pod main body;

[0011] An antenna control unit, the antenna array unit and the servo unit are signal connected with the antenna control unit, and the environmental control cooling unit and the antenna control unit are arranged in the fairing at both ends of the pod main body.

[0012] Preferably, the antenna array unit comprises a radio frequency component for outputting excitation signals and converting received echo signals into digital signals, an active phased array antenna for transmitting radar signals and receiving loop signals, and an antenna unit power supply.

[0013] Preferably, a connecting frame is arranged between the pod body and the fairing, the connecting frame comprises a connecting frame main plate and connecting frame side plates obliquely arranged at both ends of the connecting frame main plate to form a U-shaped frame structure, and the connecting frame is used to avoid the environmental control cooling unit or the antenna control unit interfering with the electromagnetic wave radiation field of the antenna array unit.

[0014] Preferably, the connecting frame side plates on both sides are symmetrically arranged about the connecting frame main plate, and the folding angle of the connecting frame side plates on both sides is 140°-145°.

[0015] Preferably, the fairing is a composite material sandwich structure integrally formed fairing, and the fairing is bolted with the connecting frame.

[0016] Preferably, the environmental control cooling unit is arranged in the front fairing, and the environmental control cooling unit is mounted on the front connecting frame through an environmental control cooling unit connecting bracket, and the environmental control cooling unit connecting bracket is bolted with the front connecting frame.

[0017] Preferably, the front end of the front fairing is provided with an air inlet, the bottom of the front fairing is provided with an air outlet, the air inlet is provided with a front fairing air inlet channel, and the air outlet is provided with a front fairing air outlet channel.

[0018] Preferably, the antenna control unit is arranged in the rear fairing, and the antenna control unit is mounted on the rear connecting frame, and the antenna control unit is bolted with the rear connecting frame.

[0019] Preferably, a radar wave-transparent cover is arranged in the pod body, the radar wave-transparent cover is arranged along the axial direction of the antenna array unit, and both ends of the radar wave-transparent cover are connected with the connecting frames at both ends.

[0020] Preferably, the radar wave-transparent cover comprises two side skins and a honeycomb sandwich in the middle, the thickness of the two side skins is 0.5mm, and the thickness of the honeycomb sandwich is 9mm.

[0021] The omnidirectional detection early warning radar antenna unit provided by the utility model, the servo unit can drive the antenna array unit to rotate around the shaft in the range of nearly 360 degrees, so that each antenna unit array plane of the antenna array unit can realize omnidirectional coverage detection capability, the direction is flexible, the response is rapid, and multiple targets can be identified and tracked at the same time;

[0022] Meanwhile, each unit of the omnidirectional detection early warning radar antenna unit is integrated in the pod main body, so that the omnidirectional detection early warning radar antenna unit has the advantages of high omnidirectional radiation efficiency, strong environmental adaptability and the like, and is suitable for all-weather and omnidirectional search and tracking of air, ground and sea surface targets. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and other drawings can be obtained according to the provided drawings without creative labor for those skilled in the art.

[0024] Figure 1 It is a structure schematic view of the specific embodiment of the omnidirectional detection early warning radar antenna unit provided by the utility model.

[0025] Figure 2 It is a left view schematic view of the omnidirectional detection early warning radar antenna unit.

[0026] Figure 3 It is a right view schematic view of the omnidirectional detection early warning radar antenna unit.

[0027] Figure 4 It is a structure schematic view of the antenna array unit.

[0028] Figure 5 It is an outside structure schematic view of the front end connecting frame.

[0029] Figure 6 It is an inside structure schematic view of the front end connecting frame.

[0030] Figure 7 It is a structure schematic view of the environmental control cooling unit connecting support.

[0031] Figure 8 It is an assembly schematic view of the environmental control cooling unit.

[0032] Figure 9 It is an inside structure schematic view of the rear end connecting frame.

[0033] Figure 10 It is an outside structure schematic view of the rear end connecting frame.

[0034] Figure 11Assembly view of antenna control unit;

[0035] Figure 12 Assembly view of front end fairing structure;

[0036] Figure 13 Assembly view of rear end fairing structure;

[0037] Figure 14 Assembly view of radar wave-transparent cover structure;

[0038] Figure 15 Assembly view of front end fairing air inlet channel structure;

[0039] Figure 16 Assembly view of front end fairing air inlet channel structure in another direction;

[0040] Figure 17 Assembly view of front end fairing air outlet channel structure;

[0041] Figure 18 Assembly view of front end fairing air outlet channel structure in another direction.

[0042] Figures 1-18 In the middle:

[0043] 10-hang pod main body; 11-front end fairing; 111-front end fairing air inlet channel; 112-front end fairing air outlet channel; 12-front end connecting frame; 13-hang pod body; 14-rear end connecting frame; 15-rear end fairing; 16-radar wave-transparent cover; 20-antenna array unit; 30-servo unit; 40-environment control cooling unit; 41-environment control cooling unit connecting support; 50-antenna control unit. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0045] The core of the present application is to provide an omnidirectional detection early warning radar antenna unit, which has omnidirectional coverage detection capability, flexible direction, rapid response, and can simultaneously identify and track multiple targets, and has strong environmental adaptability.

[0046] The omnidirectional detection early warning radar antenna unit provided by the present application comprises a hang pod main body 10, and the hang pod main body 10 is provided with:

[0047] The antenna array unit 20 is provided with a plurality of antenna arrays for transmitting radar signals and receiving echo signals;

[0048] The servo unit 30 is arranged at both ends of the antenna array unit 20 in the axial direction, and is used for rotatingly mounting the antenna array unit 20 in the pod body 13 of the pod main body 10, and driving the antenna array unit 20 to rotate around the shaft;

[0049] The environmental control cooling unit 40 is used for controlling the environmental parameters of the pod main body 10;

[0050] The antenna control unit 50 is signal-connected with the antenna array unit 20 and the servo unit 30, and the environmental control cooling unit 40 and the antenna control unit 50 are arranged in the fairing at both ends of the pod main body 10.

[0051] The pod main body 10 is used for integrally mounting the antenna array unit 20, the servo unit 30, the environmental control cooling unit 40 and the antenna control unit 50, so as to facilitate the airborne installation of the omnidirectional detection and early warning radar antenna unit, reduce the influence on the airborne structure, and improve the installation adaptability.

[0052] The pod main body 10 mainly includes the middle pod body 13 and the fairings at both ends, the antenna array unit 20 and the servo unit 30 are mounted in the pod body 13, and the environmental control cooling unit 40 and the antenna control unit 50 are arranged in the fairings at both ends, so as to disperse the mass of the omnidirectional detection and early warning radar antenna unit, and avoid the influence of excessive mass concentration on the airborne structure.

[0053] The material, shape, structure, size and connection mode of the pod main body 10 can be set according to the structure and size of each component in the omnidirectional detection and early warning radar antenna unit in actual production, and reference can be made to the existing pod structure, which will not be described herein.

[0054] The antenna array unit 20 is provided with a plurality of antenna arrays for transmitting radar signals and receiving echo signals;

[0055] The antenna array unit 20 is mounted in the pod body 13 through the servo units 30 at both ends, and completes mechanical scanning of ±85° around the shaft under the driving of the servo units 30. Compared with the existing balance beam type radar antenna, the radar performance in the front and rear 60° sector is obviously weaker than that in the left and right 120° radar sector, and the radar performance in each direction is relatively uniform, so that the omnidirectional coverage detection capability can be realized.

[0056] The servo unit 30 can be fixed to the two ends of the pod body 13 by a flange connection method, and the specific type, model and power of the servo unit 30 are determined according to actual production needs, which will not be described here.

[0057] The environmental control cooling unit 40 is used to control the temperature, pressure and other environmental parameters in the pod main body 10, and the specific structure and installation method can refer to the existing aircraft environmental control unit and cooling unit setting, which will not be described here.

[0058] The antenna control unit 50 is in signal connection with the antenna array unit 20 and the servo unit 30, which can control the rotation of the servo unit 30, make the antenna array unit 20 quickly align the area to be detected, and receive the digital signal feedback by the antenna array unit 20 for further data processing and analysis; the specific structure and installation method of the antenna control unit 50 can refer to the existing radar antenna unit setting, which will not be described here.

[0059] In the embodiment, the servo unit 30 can drive the antenna array unit 20 to rotate around the shaft in a range of nearly 360°, so that each antenna unit array of the antenna array unit 20 can realize omnidirectional coverage detection capability, the direction is flexible, and multiple targets can be identified and tracked at the same time.

[0060] At the same time, the units of the omnidirectional detection early warning radar antenna unit are integrated in the pod main body 10, which has the advantages of high omnidirectional radiation efficiency, strong environmental adaptability, etc., and is suitable for all-weather, all-directional search and tracking of air, ground and sea targets.

[0061] On the basis of the above embodiment, the structure of the antenna array unit 20 is limited, which includes a radio frequency component for outputting an excitation signal and converting a received echo signal into a digital signal, an active phased array antenna for transmitting a radar signal and receiving a loop signal, and an antenna unit power supply.

[0062] The active phased array antenna mainly includes a radiation array, a T / R component array, a subarray synthesis board, a quadrant power divider, a sum-difference device, a driving component, a switch component, a calibration gating and protection amplification component, a wave control component, etc., which is used to receive the excitation signal output by the radio frequency component to transmit a radar signal and receive an echo signal.

[0063] The radio frequency component mainly includes a radio frequency source module, a radio frequency down-conversion module and a digital down-conversion module, the radio frequency source module can output an S-band antenna transmission signal, an S-band antenna calibration signal and a radar timing signal, the radio frequency down-conversion module can receive an S-band antenna echo signal and perform analog down-conversion processing thereon, and the digital down-conversion module is used for intermediate frequency digital sampling and data packaging of the S-band antenna echo signal.

[0064] The antenna unit power supply mainly includes an antenna power supply board and a power supply component, which are used to supply power for the active phased array antenna and the radio frequency component, and to protect the antenna array unit 20 from overcurrent or overheating to ensure the normal operation of the internal circuit of the antenna array unit 20.

[0065] In the transmitting state, the radio frequency component outputs an excitation signal, the driver component receives and amplifies the excitation signal, and the amplified excitation signal is output to the T / R component array through the beam forming and distribution network and the subarray synthesis board, and is radiated to the space through the radiating array component after being phase-shifted and appropriately weighted according to the control instruction of the antenna control unit 50.

[0066] In the receiving state, the radiating array receives the radio frequency signal in the space, and the signal is amplified, phase-shifted and weighted through the T / R component array, and is transmitted to the switch component through the subarray synthesis board, the beam forming and distribution network, and is sent to the radio frequency component after being selected and / or differentially signaled or subarray signaled according to the requirement, and is converted into a digital signal after being digitally sampled, and is output to the antenna control unit 50.

[0067] On the basis of the above embodiment, in order to avoid the interference of the environmental control cooling unit 40 or the antenna control unit 50 to the antenna array unit 20, a connecting frame is arranged between the nacelle body 13 and the fairing, the connecting frame includes a connecting frame main plate and connecting frame side plates obliquely arranged at both ends of the connecting frame main plate to form a U-shaped frame structure, and the connecting frame is used to avoid the interference of the environmental control cooling unit 40 or the antenna control unit 50 to the electromagnetic wave radiation field of the antenna array unit 20.

[0068] The connecting frame and the fairing, and the connecting frame and the nacelle body 13 are preferably connected in a detachable manner such as bolt connection or pin connection, which facilitates the assembly of the nacelle body 10 and the subsequent maintenance and replacement of the environmental control cooling unit 40 and the antenna control unit 50.

[0069] The connecting frame includes a connecting frame main plate and connecting frame side plates on both sides, and the connecting frame side plates are obliquely arranged with the connecting frame main plate to form a U-shaped frame structure, so as to avoid the interference of the environmental control cooling unit 40 or the antenna control unit 50 to the electromagnetic wave radiation field of the antenna array unit 20.

[0070] In order to facilitate processing and manufacturing, the two connecting frame side plates are usually arranged symmetrically about the connecting frame main plate, and the folding angle of the connecting frame side plates on both sides is determined according to the wave transmission requirement, which is usually set to be between 140° and 145°, for example, in an embodiment, the folding angle of the connecting frame side plates on both sides of the connecting frame is 142°.

[0071] On the basis of the above-mentioned embodiments, the structure of the fairing is limited, and the fairing is a composite sandwich structure integrally formed fairing, and the fairing is bolted to the connecting frame.

[0072] Please refer to Figures 5-8 The environmental control cooling unit 40 is arranged in the front fairing 11, and the environmental control cooling unit 40 is installed in the front connecting frame 12 through the environmental control cooling unit connecting bracket 41, and the environmental control cooling unit connecting bracket 41 is bolted to the front connecting frame 12.

[0073] The front end of the front fairing 11 is provided with an air inlet, and the bottom of the front fairing 11 is provided with an air outlet, and the air inlet is provided with a front fairing air inlet 111, and the air outlet is provided with a front fairing air outlet 112, so as to provide sufficient inlet and outlet components for the heat dissipation of the antenna array unit 20, and avoid interference with the electromagnetic wave radiation field of the antenna array unit 20.

[0074] The front fairing air inlet 111 and the front fairing air outlet 112 can be connected with the front fairing 11, or directly connected with the environmental control cooling unit 40, so that the front fairing air inlet 111 is directly connected with the air inlet of the environmental control cooling unit 40, and the front fairing air outlet 112 is directly connected with the air outlet of the environmental control cooling unit 40.

[0075] The front fairing air inlet and outlet are connected with the front fairing 11, or the front fairing air inlet and outlet are connected with the environmental control cooling unit 40, and are preferably bolted, so as to facilitate assembly and subsequent disassembly and maintenance.

[0076] The shapes of the front fairing air inlet 111 and the front fairing air outlet 112 are both designed as streamline shape to reduce flow resistance, and the flow area is determined according to the actual production requirement of the heat dissipation of the antenna array unit 20, and in order to reduce the mass of the front fairing air inlet and outlet, the two are usually set as carbon fiber structure.

[0077] Please refer to Figures 9-11 The antenna control unit 50 is arranged in the rear fairing 15, and the antenna control unit 50 is installed in the rear connecting frame 14, and the antenna control unit 50 is bolted to the rear connecting frame 14.

[0078] On the basis of the above-mentioned embodiments, in order to improve the wave-penetration effect, the radar wave-penetration cover 16 is arranged in the pod body 13, the radar wave-penetration cover 16 is arranged along the axial direction of the antenna array unit 20, and the two ends of the radar wave-penetration cover 16 are connected with the two connecting frames respectively.

[0079] The material of the radar wave-transparent cover 16 can be determined according to actual production needs and referring to the prior art, and the radar wave-transparent cover 16 is usually set to be a material sandwich structure, which comprises two side skins and a honeycomb sandwich in the middle, the thickness of the two side skins is 0.5 mm, and the thickness of the honeycomb sandwich is 9 mm.

[0080] The radar wave-transparent cover 16 is usually bolted with the connecting frame to facilitate assembly and maintenance; in order to better fix the position of the radar wave-transparent cover 16 and avoid its movement, the radar wave-transparent cover 16 can also be connected with the upper and lower crossbeams of the pod body 13 to improve the connection strength between the radar wave-transparent cover 16 and the pod body 13.

[0081] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between various embodiments can be referred to each other.

[0082] The omnidirectional detection early warning radar antenna unit provided by the present application is described in detail. The principle and implementation mode of the present application are described by applying specific examples, and the description of the above embodiments is only used to help understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the principle of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An omni-directional detection and warning radar antenna unit, characterized in that The aerial pod body (10) is provided with: an antenna array unit (20) provided with a plurality of antenna unit arrays for transmitting radar signals and receiving echo signals; a servo unit (30) arranged at both ends of the antenna array unit (20) in the axial direction, for rotatingly mounting the antenna array unit (20) in the aerial pod body (13) of the aerial pod body (10), and driving the antenna array unit (20) to rotate around the shaft; a ring control cooling unit (40) for controlling the environmental parameters of the aerial pod body (10); an antenna control unit (50), the antenna array unit (20) and the servo unit (30) are signal connected with the antenna control unit (50), and the ring control cooling unit (40) and the antenna control unit (50) are arranged in the fairing at both ends of the aerial pod body (10).

2. The omni-directional detection and warning radar antenna unit according to claim 1, characterized in that The antenna array unit (20) includes a radio frequency component for outputting an excitation signal and converting a received echo signal into a digital signal, an active phased array antenna for transmitting radar signals and receiving loop signals, and an antenna unit power supply.

3. The omni-directional detection and warning radar antenna unit according to claim 1, characterized in that The connection frame between the aerial pod body (13) and the fairing includes a connection frame main plate and a connection frame side plate arranged at both ends of the connection frame main plate, and a U-shaped frame structure is formed by surrounding the connection frame main plate, the connection frame is used to avoid the ring control cooling unit (40) or the antenna control unit (50) interfering with the electromagnetic wave radiation field of the antenna array unit (20).

4. The omni-directional detection and warning radar antenna unit according to claim 3, characterized in that The connection frame side plates on both sides are symmetrically arranged about the connection frame main plate, and the folding angles of the connection frame side plates on both sides are 140°-145°.

5. The omni-directional detection and warning radar antenna unit according to claim 3, characterized in that The fairing is a composite material sandwich structure integrally formed fairing, and the fairing is bolted with the connection frame.

6. The omni-directional detection and warning radar antenna unit according to any of claims 1-5, characterized in that, The ring control cooling unit (40) is arranged in the front fairing (11), and the ring control cooling unit (40) is mounted on the front connection frame (12) through a ring control cooling unit connecting support (41), and the ring control cooling unit connecting support (41) is bolted with the front connection frame (12).

7. The omni-directional detection and warning radar antenna unit according to claim 6, characterized in that The front end of the front fairing (11) is provided with an air inlet, and the bottom of the front fairing (11) is provided with an air outlet, the air inlet is provided with a front fairing air inlet (111), and the air outlet is provided with a front fairing air outlet (112).

8. The omni-directional detection and warning radar antenna unit according to any of claims 1-5, characterized in that, The antenna control unit (50) is arranged in the rear fairing (15), and the antenna control unit (50) is mounted on the rear connection frame (14), and the antenna control unit (50) is bolted with the rear connection frame (14).

9. The omni-directional detection and warning radar antenna unit according to any of claims 3-5, characterized in that, The aerial pod body (13) is provided with a radar wave-transparent cover (16), the radar wave-transparent cover (16) is arranged along the axial direction of the antenna array unit (20), and the two ends of the radar wave-transparent cover (16) are connected with the connection frames at both ends.

10. The omni-directional detection and warning radar antenna unit according to claim 9, characterized in that The radar wave-transparent cover (16) includes two side skins and a honeycomb interlayer, the thickness of the two side skins is 0.5mm, and the thickness of the honeycomb interlayer is 9mm.

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