Recently, the country's first open- air drone counter-base with public welfare was officially established in Jingrong Town, Chengdu, Sichuan Province. The establishment of the base played an important role in promoting the "black fly, legal flight". Attract more companies to join the anti-UAV industry, jointly develop and incubate more updated anti-UAV technology products, used to purify the sky and maintain legal order.
It is understood that at present, it has achieved fruitful results in the counter-manufacturing of drones, successfully breaking through the conventional communication frequency band of the UAV, communication encryption technology, and satellite anti-theft technology; ensuring user safety and ensuring users. More than ten patented technologies have been adopted for ease of use. The creative use of a combination of eviction and in-situ forced landing minimizes negative damage in performing missions. Counter-measurement, under the premise of ensuring the safety of personnel under electromagnetic interference or under full authorization, there is no technical obstacle.
The necessity of the existence of drone counter
The national low-altitude airspace is gradually opening up, and the application of drones is more and more extensive, but the uncontrollable risks from drones are gradually increasing. The "black fly" incidents of various drones have caused deep concern in society. In the civil aviation field, when the airport encounters drone interference, the flight is neglected and passengers are stranded.
Although some drone companies have designated no-fly zones for their drones in their products, they are limited to only a few areas. UAV accessories are sold everywhere on the Internet, and it is easy to assemble a UAV capable of flying. The threshold is not high; especially after the 80s and 90s, the majority of UAV users purchase through various purposes. The parts have been equipped with drones. Without minimum flight and safety training, the drones are flying in various places that are not suitable for flight, resulting in frequent incidents such as civil aviation safety, bombing and wounding, and some users. I simply don’t know the clearance protection zone and directly fly freely to cause the “black fly†phenomenon.
What is a drone counter gun?
"Electromagnetic rifle" counter drone
The UAV counter gun is a gun type electromagnetic interference device, which is not only a gun type but also a splint type.
The drone was not broken into pieces, but slowly landed on the ground. The British International Financial Times said that the principle of this weapon is to emit electromagnetic interference waves between 2.4GHz and 5.8GHz, interrupting the connection between remote control equipment and drones. Because most drone remotes are also in this frequency range.
"Electromagnetic rifle" is not a real gun, but the shape is made into a rifle. The device can emit wireless electromagnetic waves from the antenna. It can sweep over the conical contour of 30 degrees, and interfere with the GPS navigation signal of the suspected drone control signal. Effective range It is 400m. After receiving the interference, the drone will be forced to drop due to the loss of the connection.
The American Butler National Security Company has developed a radio rifle called "Unmanned Aircraft Defender". The domestic Qingdao National Digital Information Technology Co., Ltd. independently developed the JAM series of electromagnetic rifles. The cooling time of this kind of equipment is second, the whole preparation quality is about 5kg, and it can work continuously for several hours. This year's China Football League, the electromagnetic rifle worth 250,000 yuan was unveiled in Wuhan for the first time. Only the opening ceremony of the Chinese A team successfully drove the drones 6 times. The Wuhan Public Security Bureau will also introduce 19 drone counter guns. Used for the Wuhan Marathon. The device is safe and reliable and easy to carry, and can be tried and promoted in the field of airport anti-hand drones.
Anti-UAV means classification and advantages and disadvantages
According to Jing Xiaoping, the representative of the academician drone laboratory, the current anti-UAV methods are mainly divided into three major methods: electromagnetic interference, acoustic interference and physical destruction.
Electromagnetic interference: the cost is not high and it is convenient to carry. The disadvantage is that it cannot be detected by itself and requires manual cooperation.
Acoustic interference: high difficulty, high cost and still in the theoretical stage;
Physical destruction: Bring the sensor, shoot down the drone fast, and adapt to the environment, but the cost is high only for military use.
If a large-scale anti-UAV method is to be used to combat the "black fly" phenomenon, many new problems will arise, such as interference with ground-to-air communication, the risk of falling from a high altitude, etc., which will become new security issues. However, the anti-UAV is favored because it takes a proactive approach and is more direct and effective than the local regulatory system. However, the application of the anti-UAV has become a reason to hinder its rapid expansion. Therefore, the anti-UAV industry needs more people to participate. (Source: Sichuan Air Show)
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