Laser interception countering method, algorithm and countering device

Abstract

The invention belongs to the technical field of laser interception countering, and particularly relates to a laser interception countering method, algorithm and countering device. A first interception countering device can perform early warning and traceability on a protection area, and a second interception countering device can perform early warning and traceability on a threat area, and according to the collected environment gray value, whether the first interception countering device or the second interception countering device is used for early warning and tracing is judged. According to the technical scheme of the invention, the problems that the detection of light spots is extremely difficult and early warning cannot be performed due to the direct interference of 1550 nm light in sunlight can be solved. Direct interference can be eliminated to the maximum extent, and the alarm accuracy is improved to 90% or above. Moreover, the problem that the false alarm rate is too high due to the fact that interference factors are numerous and are particularly prone to being interfered by 1550 nm light generated by automobile lamps and heating objects in the outdoor environment is solved. By means of the technical scheme, the false alarm rate can be reduced to be within 5%.

Description

technical field [0001] The invention belongs to the technical field of laser interception and countermeasures, and in particular relates to a laser interception countermeasure method, an algorithm and a countermeasure device. Background technique [0002] At present, there is only one way for the laser interception and countermeasure system, that is, to achieve the effect of laser interception and countermeasure by detecting the laser interception spot. However, there are mainly two ways to trace the source of the laser spot: [0003] One is a scheme proposed by the team of teacher Chen Youhua from North University of China, which uses the ellipticity of the laser spot projected on the window to determine the interception light path and then determine the interception light source; and applied for a related patent, the patent application number is 201610819870.0 , named as an identification method and identification device for the location of laser bugs; [0004] The other...

AI Technical Summary

Problems solved by technology

[0006] 1. Due to the direct interference of 1550nm light in sunlight, it is extremely difficult to detect the light spot, let alone accurately describe the ellipticity of the light spot

resulting in no early warning

[0007] 2. Since the entire floor needs to be protected, the entire counter system works in an outdoor environment, which is particularly susceptible to interference by 1550nm light generated by car lights and heat-generating objects

resulting in a high false alarm rate

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