In order to prevent drone attacks, countries have corresponding management regulations, such as limiting the flightable airspace.
Small drones are “difficult to prevent” mainly because of their natural concealed features and specific use environment. Most civil or commercial drones are small in size, slow in flight speed, and often flying in low-altitude or ultra-low-altitude airspace. Some also have air hovering and mooring functions, which are typical "low, slow, small" goals.
And once the drone enters the city, it will soon be integrated into the electromagnetic clutter environment of the urban airspace. The general radar, which focuses on high-speed motion missiles and aircraft, is difficult to detect such special targets from the ground clutter; although the optical detection system can sometimes catch the traces of the drone, it is also subject to detection distance and reaction delay. Constraints such as factors.
From 2012, the United States formulated an anti-UAV strategy and planned to design an effective air defense system to quickly respond to the threat of enemy drones without injuring the friendly aircraft and missiles. Boeing has developed a variety of anti-UAV laser weapons, such as LWS laser cannons, which can shoot low-altitude low-speed drones within seconds of discovering drones.
Last year, a new anti-UAV system developed by a company in Silicon Valley in the United States could identify the enemy and the enemy on the radio frequency signal, and also track and intercept it.
Some military enterprises in China have also developed radars for small commercial drones, which can detect drones that are 2,000 meters away and 100 meters high. A Chinese defense company publicly exhibited the "Silent Hunter" laser anti-UAV chariot. There are also new concept weapons such as capture drones and anti-UAV laser guns at home and abroad.