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The lasers are not immune to jamming

 

LIDAR-Image


 

The lasers are not immune to jamming


In the world of the military, the laser-systems are very popular because they are immune to the jammer system. The fact is that LIDAR (Light Detection and Ranging) -based systems can jam by giving the laser system false laser echoes. Jamming the laser-based rangefinder is quite easy. The laser detector can be jam by pointing it with another laser and that radiation will cause that the system will get the wrong values, and the warhead of the missile will translate the strong radiation echo that the impact is coming. 

In future systems, the counter radiation can send by using the same frequency what has the same frequency as the laser radiation that is sent from the LIDAR-system. When those laser rays will travel through the LIDAR-radiation it will polarize the radiation. And that thing will twist the radiation waves of the LIDAR system. 

If the laser rangefinder is pointed by another laser that causes the echo what the system detects is too strong. And this kind of way to use the counter radiation can cause that the missile will explode too early. In this case to the laser will target another laser, which will disturb the aiming and ranging system. 

In the modern cruise missile, the LIDAR-based systems are in use at altimeters and targeting systems. In those systems the echo, what the LIDAR-system will get will be twisted. The twisting of those radiation echoes can do by using dust, which absorbs part of that radiation or making a hologram, or sending another laser ray through the LIDAR-system's laser radiation. 

If the LIDAR-based altimeter gets twisted echoes, that can cause that the thing like a cruise missile will rise too high. If the echo is too strong that thing will cause the computer of the missile to think that the missile is flying too low. And if the echo is too weak the system translates that the missile or drone flies too low. And if the change of altitude is too down and flight altitude is about 100 meters, the drone can crash immediately. 


LIDAR: https://en.wikipedia.org/wiki/Lidar


Image: https://www.geospatialworld.net/blogs/what-is-lidar-technology-and-how-does-it-work/

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