We use the laser pointer system, after debugging can deal with this threat. It is a major challenge for the global defense system.The system's radar can identify the target, and its laser system can destroy them. "UAV dome" is also equipped with interference system, disrupting the communication between the UAV and its operators. The line width of an ordinary laser is usually several kilohertz to several million hertz, which is not suitable for a particularly high precision test. The German Federal Institute of Physics and Technology and the American Academy of Experimental Astrophysical Physics scientists to create two wavelengths of about 1.5 microns of green laser pointer, compared to show that the line width of 10 milliseconds of these 2000mw laser is very stable, composed of laser All the light waves are very similar, the oscillation step height is consistent, can be synchronized in the case of 194 trillion times per second to maintain synchronization for at least