The most common interference methods of drone jammers against systems

As unauthorized drone flights become more common, the market for anti-drone solutions is booming. Despite technological advances and the growth of the drone market, the problem of unauthorized drone flights (commonly known as “black flights”) remains. In response to this problem, the anti-drone industry has developed drone jammer countermeasure systems specifically targeting this problem and has achieved remarkable results. These countermeasure systems use techniques such as signal jamming, acoustic jamming, and radio hijacking to interfere with drones.

For example, GPS signal jamming involves transmitting a certain power of directional radio frequency to the drone, preventing its GPS positioning system from obtaining accurate coordinates. As a result, the drone can only hover in the air and sway with the wind. Acoustic jamming mainly targets the drone’s gyroscope. By generating sound waves at the natural frequency of the gyroscope, resonance occurs, disrupting its normal operation and causing the drone to fly unsteadily, which may cause a crash. Radio hijacking refers to the interference of communications between the drone and the operator, thereby gaining unauthorized control of the drone’s movement, which may cause the drone to remain stationary, fall directly, or return autonomously.

At present, the jamming technology used by drone jammer countermeasure systems has been proven to effectively mitigate the overall threat posed by unauthorized drone flights.

There are three main methods used by domestic and foreign anti-UAV systems to combat unauthorized UAVs:

1.Signal interference blocking (cost-effective and widely used):

JAMMERSIGNAL Electronics, which has ten years of professional experience, focuses on this method.

• Radio electromagnetic wave interference: By disrupting the remote control signal, data transmission and image transmission signal of the UAV (usually in the 2.4G/5.8G frequency range), the UAV enters a self-protection state when the signal is lost, forcing it to land or retreat.
• GPS navigation and positioning interference: UAVs usually rely on satellite navigation and positioning systems to obtain location data. By blocking GPS signals, UAVs can enter a self-protection state when they cannot be accurately positioned, thus being forced to land or retreat.

2.Weapon attack (not feasible for civil use):

This method involves using weapons to aim and directly destroy the UAV. However, it requires precise aiming and is costly. In addition, the fall of the UAV may cause collateral damage. Therefore, it is almost impossible to directly destroy the UAV in a civilian environment.

3.Interception and capture method (difficult to implement):

One method is to capture the UAV by launching an interception net from the ground or air. Common methods include the use of capture nets and drones specifically designed for capture. Shooting a capture net from a gun is a popular technique, but it only works at close range and requires great precision. Another approach is to use large drones equipped with large capture nets to capture smaller drones. However, this method is challenging to control because small drones have greater maneuverability, limiting its widespread use.

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