Drone jammer is a device that can block the wireless communication signal of drones, and its main function is to prevent drones from illegally flying or carrying out tasks in specific areas. With the development of technology, drones have gradually entered our lives, but they also bring some problems, such as privacy infringement and airspace disturbance. To solve these problems, drones jammers have emerged. This article will detail the working principle of drone jammers and how to block the communication signal of drones.
First, you need to understand how drones communicate. Drone communications mainly rely on radio waves for data transmission, usually using two frequency bands of 2.4GHz and 5.8GHz. These two bands are widely used worldwide, so the operating frequency of drone jammers also needs to cover these two bands to ensure effective jamming of most drones.
The working principle of the UAV jammer is mainly divided into two aspects: one is to block the communication between the UAV and the remote control, and the other is to block the communication between the UAV and the ground control station. The core of both aspects is to interfere with the drone's communication link by transmitting specific radio wave signals, making it unable to work properly.
1. Block the communication between the drone and the remote control
When the user controls the drone, the remote control sends control signals to the drone. These signals are usually transmitted using pulse-code modulation (PPM) or frequency-modulation (FM) methods of radio waves. By transmitting radio waves with the same or similar frequency, phase and modulation mode as these signals, the drone jammer interferes with the signal received by the drone, so that the control instructions of the remote control can not be analyzed normally. This way, even if the remote control can still operate normally, the drone will not be able to fly according to the user's instructions.
2. Block the communication between the drone and the ground control station
In addition to the remote control, the drone can also be controlled remotely from a ground control station. The ground control station usually establishes a data link with the UAV, through which remote control commands, image information and other data are transmitted. Drone jammers can also interfere with normal communication on this data link by transmitting radio waves of specific frequencies, phases and modulations. In this way, even if the ground control station can still operate normally, the drone can not receive any commands and information, so that it can not perform the task.
In actual use, UAV jammers usually have the following characteristics:
1. Wide coverage: Due to the limited propagation distance of UAV communication signals, the coverage of UAV jammers is relatively small. However, by using multiple jammers or other technical means, the coverage of the jammer can be extended to achieve effective jamming of a larger area.
2. Adjustable interference intensity: Different UAVs may need different intensity interference signals to achieve effective blocking. Therefore, the UAV jammer usually has the function of interference intensity adjustment, which can be adjusted according to actual needs.
3. Easy to carry and use: Drone jammers are usually designed as portable devices for users to carry and use when needed. Some jammers also have the function of automatically identifying and locking the target, making the operation easier and more convenient.
By transmitting radio waves of specific frequency, phase and modulation mode, the UAV jammer blocks the communication signal between the UAV and the remote control station and the ground control station, so as to achieve effective interference to the UAV. Such equipment plays an important role in ensuring airspace safety and preventing privacy violations.
