At present, most of the more popular police drone jammer on the market are gun-type (similar to gun-shaped) jamming devices. Such devices are impressive in the video, but they are not very suitable for actual combat applications. Consistent, there are many defects:
1. Most use low transmit power (2-5W for a single frequency band), and the effective range is less than 500 meters, which is not suitable for actual combat application scenarios: UAVs with destructive power or terrorist-related behaviors are sufficiently dangerous to enter the range of 500 meters. degree and serious consequences!
2. Most use directional antennas: The premise of using directional antennas is that the direction and position of the drone have been determined in advance, which is extremely unrealistic in actual combat! specific reason:
(1) In actual combat, the most basic requirement is that UAVs should not be able to enter the protection area, and only those who penetrate the defense occasionally may be discovered. It is too late to use directional interference until it is discovered;
(2) Using directional antennas, the premise is that the drone must be visible. In actual combat, the drone is over 300 meters high and cannot be recognized by the naked eye. When approaching at a low altitude, trees, buildings, billboards, and other objects will block it. obstructs sight;
(3) The protection area of the anti-drone is not necessarily all sunny weather, and it needs to be considered that in cloudy, hazed or night scenarios, the detectable distance of the drone will be very short;
(4) The interference of the directional antenna requires the personnel on duty to keep an eye on the sky and the near-earth space, but the field of vision (where the eyes can see clearly) is limited, and the time is slightly longer, and there will be visual fatigue;
(5) UAVs engaged in sabotage or terrorism, attack in multiple sorties, in batches, or from multiple directions, the equipment of directional antenna will take care of one and the other;
(6) Gun-shaped aiming anti-drone jammer equipment with a built-in directional antenna, the user is close to the interference source at close range, and the electromagnetic radiation received is also strong, and it is harmful to the human body when working for a long time;
The goals of the drone signal jammer
1. Unmanned aerial vehicles outside the protection zone cannot enter;
2. The drone in the protection zone cannot take off;
3. Combine jamming equipment and induction equipment to capture drones;
The correct procedure for counter drones:
1. Resolutely do not allow drones to enter the protection zone, especially within visible range;
2. Drive away, force-land, and capture drones that occasionally penetrate defenses;
The correct application of anti-drone jammer:
1. Use high-power signal transmission: take the protection area as the center, and the coverage radius is required to be greater than 500 meters;
2. Omnidirectional antenna is used for transmission: the equipment does not need to send a special person to be on duty at close range;
3. Interfering signals in some frequency bands are continuously transmitted, such as the L1 induction signal of GPS (clearly marked the protection zone as a no-fly zone). Selective emission of some interfering signals, such as UAV flight control band signals, GPS/Beidou/Galileo/GLONASS L2 navigation signals, wireless image transmission signals, etc.
