Dual-mode electromagnetic countering system for low-altitude unmanned aerial vehicle

Abstract

The utility model discloses a dual-mode electromagnetic countering system for a low-altitude unmanned aerial vehicle, and the system comprises a directional antenna array, a navigation antenna, a foldable support, an antenna installation panel, a signal receiving and transmitting device, and an antenna rotary table. The directional antenna array can be switched between a linear array and a circular array. The dual modes are a high-power directional mode and a high-speed omnidirectional mode; in a high-power directional mode, the foldable bracket is unfolded, so that the directional antenna array is linearly arranged, and the direction of the directional antenna array is controlled by the horizontal rotation of the antenna turntable; when the high-speed omnidirectional mode is switched, the foldable support is folded, so that the directional antenna array is arranged in a circular ring shape, and at the moment, the antenna turntable is in a static state. According to the utility model, the volume of the electromagnetic countering system is reduced, the countering distance of the unmanned aerial vehicle and the rapid identification and countering capability of a plurality of unmanned aerial vehicle targets are improved, and the system is suitable for rapid deployment of systems in different application scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to unmanned plane countermeasure technical field, concretely is a kind of dual-mode electromagnetic countermeasure system for low-altitude unmanned plane. BACKGROUND

[0002] With the impetus of low-altitude aircraft technology, low-altitude economy, as a representative of emerging industry, is becoming a new engine of China's economic growth with its unique charm and great potential. With the increasing of low-altitude flight activities, especially the rapid development of unmanned plane technology, establishing air traffic order and ensuring air environment safety have become an important prerequisite for the healthy development of low-altitude economy. Unmanned plane electromagnetic countermeasure system is an electronic device that uses radio technology to monitor, identify, locate and counter unmanned planes, and is an important means of orderly control of low-altitude unmanned planes in a certain airspace during important places and important activities. Its main working principle is to use array antenna to receive remote control and image transmission radio signals emitted by unmanned planes, use signal identification and direction finding positioning algorithm to identify and track unmanned planes, and if the unmanned plane is in illegal intrusion state, use interference signal generation algorithm to interfere with the radio signals of the unmanned plane, forcing it to land or drive away.

[0003] Currently, there are several different forms of unmanned plane electromagnetic countermeasure systems. For example, Chinese patent CN118981057A discloses a portable detection and positioning device and method for unmanned plane detection and countermeasure, which uses a rotating directional antenna to continuously collect radio electromagnetic signals, radar reflection signals and other data in the target range to realize unmanned plane detection and positioning; CN222617736U discloses an unmanned plane electronic countermeasure device, which includes an unmanned plane countermeasure device main body, an observation mirror mounted on the upper surface of the unmanned plane countermeasure device main body, etc., and realizes unmanned plane positioning and countermeasure by handheld aiming. However, the above forms all use rotating directional antennas to aim at the direction of unmanned planes, which still has certain limitations in actual application, specifically: 1. Single antenna gain is low, resulting in low equivalent radiation power and short monitoring and countermeasure working distance; 2. Multiple unmanned plane targets in different directions cannot be counteracted simultaneously. Therefore, it is of definite practical significance to develop an unmanned plane electromagnetic countermeasure system that has high power and can simultaneously track and counter multiple targets. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of dual-mode electromagnetic countermeasure system for low-altitude unmanned plane, and realizes the countermeasure function of high-power direction and high-speed omnidirectional two modes by the antenna array of switchable arrangement pattern.

[0005] In order to achieve the above purpose, the utility model mainly uses the following technical solutions:

[0006] A dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicles, comprising: a directional antenna array, a navigation antenna, a foldable support, an antenna mounting plate, a signal transceiver device and an antenna turntable, the foldable support can be unfolded and folded, so that the directional antenna array can be switched between linear arrangement and circular arrangement; the dual-mode is high-power directional mode and high-speed omnidirectional mode.

[0007] Further, the directional antenna array is composed of 5-11 wideband directional antenna units and is installed on the upper surface of the foldable support through fixed support.

[0008] Further, the working frequency of the directional antenna array is 0.9-6 GHz, and a planar antenna cover is arranged at the antenna radiation port.

[0009] Further, the foldable support can be folded and unfolded along the rotating joint.

[0010] Further, the foldable support and the navigation antenna are mounted on the antenna mounting plate, the antenna mounting plate is connected with the signal transceiver device and the antenna turntable in a stacked manner, and is aligned along the center.

[0011] Further, the dual-mode can be switched according to task requirements; when in high-power directional mode, the foldable support is unfolded, the directional antenna array forms linear arrangement, and the direction of the directional antenna array is controlled by horizontal rotation of the antenna turntable; when switched to high-speed omnidirectional mode, the foldable support is folded, the directional antenna array forms circular arrangement, and the antenna turntable is in a stationary locking state.

[0012] Further, the signal transceiver device and the antenna turntable are connected with a remote control device through wired or wireless mode.

[0013] The utility model has the beneficial effects compared with prior art:

[0014] The utility model utilizes the folding structure to make the arrangement form of the array antenna reconfigurable, reduces the volume of the electromagnetic countermeasure system, and the system function is more flexible, can be suitable for different application scene system rapid deployment. High-power directional mode adopts antenna array, improves the gain of signal interference, and multiple radiation channels support multi-signal mode interference, which can further improve the unmanned aerial vehicle countermeasure distance. High-speed omnidirectional mode can realize that the system reaches azimuth direction full coverage in signal monitoring and countermeasure, and has multiple unmanned aerial vehicle target rapid identification positioning and countermeasure ability. DRAWINGS

[0015] Figure 1 It is the overall structural drawing that the utility model a kind of dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicles is in high-power directional mode.

[0016] Figure 2 The utility model relates to a whole structural drawing of a dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicle in high-speed omnidirectional mode.

[0017] Figure 3 The utility model discloses a folding structure's unfolded state plan view.

[0018] Figure 4 The utility model discloses a folding structure's folded state plan view.

[0019] Mark in drawing: 100-directional antenna array, 200-navigation antenna, 300-foldable support, 400-antenna installation flat plate, 500-signal transceiver equipment, 600-antenna turntable, 110-fixed support, 120-plane antenna cover, 310-rotary joint. DETAILED DESCRIPTION

[0020] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments. Specific embodiment one:

[0022] The embodiment is a dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicle.

[0023] As shown in Figures 1-4 A dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicle, comprising: directional antenna array (100), navigation antenna (200), foldable support (300), antenna installation flat plate (400), signal transceiver equipment (500) and antenna turntable (600), the foldable support (300) can be unfolded and folded, so that the directional antenna array (100) can be switched between linear arrangement and circular arrangement; the dual mode is high-power directional mode and high-speed omnidirectional mode.

[0024] The directional antenna array (100) is composed of six wideband double-ridge horn antenna units and is installed on the foldable support (300) through the fixed support (110). The working frequency of the directional antenna array (100) is 0.9-6GHz, and the plane antenna cover (120) is fixed by structural adhesive at the antenna radiation port.

[0025] The foldable support (300) is made of stainless steel to meet the strength requirement and can be folded and unfolded along the rotary joint (310). The rotary joint (310) has a limiting design, the maximum unfolded state of the foldable support (300) is a parallel linear structure, and the maximum folded state is a dodecagon structure.

[0026] The foldable support (300) and the navigation antenna (200) are mounted on an antenna mounting plate (400) made of aluminum alloy, which is connected to the signal transceiver device (500) and the antenna turntable (600) in a stacked manner by screws and is aligned along the center.

[0027] The dual mode can be switched according to the task requirements; when in the high-power directional mode, the foldable support (300) is unfolded, the directional antenna array (100) is arranged in a straight line, and the direction of the directional antenna array (100) is controlled by the horizontal rotation of the antenna turntable (600); when switched to the high-speed omnidirectional mode, the foldable support (300) is folded, the directional antenna array (100) is arranged in a circular ring, and the antenna turntable (600) is in a static locking state at this time.

[0028] The signal transceiver device (500) and the antenna turntable (600) are connected to the remote control device by wired or wireless means. According to the specific use, the signal transceiver device (500) can be configured with a low-noise amplifier and a power amplifier switching switch module, a multi-channel radio frequency module, etc. to meet different requirements.

[0029] The above is only the preferred embodiment of the present application, it should be understood that the present application is not limited to the form disclosed herein, should not be considered as excluding other embodiments, and can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein by the above teaching or related art or knowledge. The modification and change made by the person skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the appended claims of the present application.

Claims

1. A dual-mode electromagnetic countermeasure system against low-altitude unmanned aerial vehicles, characterized by comprising: The directional antenna array (100), the navigation antenna (200), the foldable support (300), the antenna mounting flat plate (400), the signal transceiver device (500) and the antenna turntable (600), the foldable support (300) can be unfolded and folded to switch the directional antenna array (100) in the linear arrangement and the circular ring arrangement; the dual mode is the high-power directional mode and the high-speed omnidirectional mode.

2. The dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicles according to claim 1, characterized in that: The directional antenna array (100) is composed of 5-11 broadband directional antenna units and is installed on the upper surface of the foldable support (300) through the fixed support (110).

3. The dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicles according to claim 1, characterized in that: The working frequency of the directional antenna array (100) is 0.9-6 GHz, and the planar antenna cover (120) is arranged at the antenna radiation port.

4. The dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicles according to claim 1, characterized in that: The foldable support (300) can be folded and unfolded along the rotating joint (310).

5. The dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicles according to claim 1, characterized in that: The foldable support (300) and the navigation antenna (200) are installed on the antenna mounting flat plate (400), the antenna mounting flat plate (400) is connected with the signal transceiver device (500) and the antenna turntable (600) in a stacked manner, and is aligned along the center.

6. The dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicles according to claim 1, characterized in that: The dual mode can be switched according to the task requirement; when in the high-power directional mode, the foldable support (300) is unfolded to form the linear arrangement of the directional antenna array (100), and the direction of the directional antenna array (100) is controlled by the horizontal rotation of the antenna turntable (600); when switched to the high-speed omnidirectional mode, the foldable support (300) is folded to form the circular ring arrangement of the directional antenna array (100), and the antenna turntable (600) is in the static locking state.

7. The dual-mode electromagnetic countermeasure system for low-altitude unmanned aerial vehicles according to claim 1, characterized in that: The signal transceiver device (500) and the antenna turntable (600) are connected with the remote control device through wired or wireless mode.

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