Anti-drone Laser System is a new concept weapon that replaces conventional bullets to directly damage targets or make them ineffective by using Laser beam directed to fire to produce three effects, such as ablation, shock wave and radiation. It is especially suitable for attacking small and miniature UAVs, with the advantages of fast, flexible, accurate, antielectromagnetic interference, low cost and so on. It is a big killer for the common UAV with the nature of "low altitude, slow speed and small target". The laser weapon system can be deployed in different scenarios, such as airports, military camps, government departments and other key sectors, and even on warships and armored tanks to strike incoming precisionguided weapons.

At present, China and the United States are industry leaders. The power of China's anti drone laser weapons ranges from 3KW to 100KW, and there are a variety of different models to meet different needs.

In general, the anti-drone laser weapon system also includes detection radar. Moreover, except the laser weapon strike means, there are microwave strike weapons, electronic jamming and so on. Different strike means are available.

Directed energy weapons represented by anti-drone laser weapons have the following typical characteristics: (1) low cost: the launch cost of directed energy weapons is much lower than that of missiles and other weapons; (2) High energy density: the energy beam carries a high power (such as the power of the laser beam can be hundreds to thousands of kilowatts), and the cross section is small, which can obtain a very high energy density; (3) Difficulty in confrontation: because the energy beam has the characteristics of high speed and difficult to detect, it is difficult for the target to conduct early warning and maneuver against the attack; (4) Flexible use: This directed energy weapon does not need to calculate the trajectory, low noise, no recoil, easy to hide and adjust.

However, due to the limitations of volume, weight and power consumption, the laser antiUAV system is mainly based on the ground-based platform, and the development speed is slow. Modularity, solid state, miniaturization and the use of new materials are the direction of future improvement.

Faced with the new pain points such as the decreasing cost of UAVs and the massive application of UAV swarm, the disadvantages such as the unreliable electromagnetic interference, the low accuracy of anti-aircraft guns, the limited capacity of anti-aircraft missile ammunition and the poor cost exchange ratio all need to be made up. First, it is necessary to increase the development of new concept weapons such as laser and microwave, laser and high-power microwave will become the conventional means of anti-UAV in the future; Second, as the most reliable measure to guarantee the minimum requirement needs, air defense missiles are still the focus of the development of all countries, but it is urgent to reduce the cost of air defense missiles. Even with the world's largest military expenditure of the United States has also realized this problem, the United States Army has asked contractors to limit the price of development and deliver air defense ammunition in its leading air defense system; Third, it is necessary to build a counterattack system that combines hard and soft elements with air space, and form a "five-in-one" counterattack UAV interception system consisting of early warning, electromagnetic bell shield, air defense hard kill, ground directed energy and air attack UAV.
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