The most common way of drone interference, let's take a look!

2022-01-08

Drones, a remarkable invention of modern high-tech weapons. With the advancement of science and technology and the continuous maturity of UAV technology, UAVs are flying farther and higher. In the military, it is mainly used for reconnaissance, strike, surveillance, intelligence collection and other tasks. Among them, reconnaissance and intelligence collection are particularly important and have a great impact on the war situation. In civilian use, drones are mainly used for performances, power line patrols, science and technology education, agricultural plant protection, etc.

However, in special application scenarios such as military use and performances, interference methods to resist black flying drones are necessary. However, in contrast to this

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Drone Jamming


When it comes to interference, it can generally be divided into natural factors and human factors. In terms of natural factors, magnetic field changes are the most common.

In terms of human factors, the most typical ones are those countermeasures in the anti-black flying market, which generally interfere with drones through signal interference, sound wave interference, radio hijacking, etc.

Signal interference - such as GPS interference, a certain power of directional radio frequency is released to the drone, so that the drone equipped with the GPS positioning system cannot obtain accurate coordinate data, so it can only hover in the air and sway with the wind;

Sonic interference - the main target of attack is the gyroscope carried by the drone. When the frequency of the sound wave is consistent with its natural frequency, resonance will occur between the two parties, which in turn affects the normal operation of the gyroscope, resulting in the flight disorder of the drone. Seriously If so, it may cause the drone to crash;

Radio Hijacking - By jamming the radio frequency between the drone and the pilot, taking control of the drone, causing it to linger in place, fall directly, or return on its own.

At the same time, it is worth noting that from the platform of certain treasure and certain east, perhaps the finished product price of some drone jammers is a bit high. However, Sun Yi, chief test pilot of the UAV company of Beihang University, said: "Some equipment sold online is easy to modify or assemble signal jammers, and some people who understand technology can also make their own, and the cost is not high, generally tens of thousands of yuan. It is less than 10,000 yuan or 10,000 yuan. Because everyone knows the frequency band of GPS, it is enough to suppress the frequency point so that the drone cannot receive the signal.”

From this point of view, if you deliberately interfere with the drone, sometimes it is really "simple". But for "legally flying drones," this shouldn't be good news.

According to industry insiders, from the current point of view, the man-made interference means represented by interference equipment cannot be prevented by technical means for the time being. However, although the prevention is not yet in place, in terms of the overall "anti-jamming" capability, UAVs can be said to have achieved little at present. It is understood that there are already companies engaged in the development of GPS receivers, jammers and modules, which can prevent UAV GPS signals from being jammed and deceived, and have also successfully conducted UAV airborne tests.

Because of the rampant black flying drones, the "anti-black flying" market has gradually started and is on the right track. According to the "Anti-UAV Market Report" first released by foreign market research institutions Markets & Markets, analysts predict that between 2017-2022, the anti-UAV market will grow at an annual rate of about 24%, and by 2022, The total market will reach $1.14 billion.