Automatic multi-beam laser active imaging alarm system

Abstract

The multi-beam laser active imaging automatic warning system relates to an all-weather long-distance imaging detection system, which solves the problem of low resolution and difficulty in realizing the accurate identification of long-distance dark and small targets in existing security equipment using passive imaging. When active laser imaging is used, the detection range is less than 2km, and the uniformity of the target spot is reduced due to the flickering effect of the spot of the beam, which leads to the problem that the resolution of the echo image collected by the receiving system is reduced. The whole system consists of a laser, a polarization splitting system , transmitting system, receiving system, CCD detector, image acquisition system and automatic target recognition system. Finally, automatic identification and warning of human targets holding guns will be realized. The multi-beam laser active imaging automatic alarm system of the present invention is an automatic alarm system capable of realizing long distance, high resolution and high intelligence.

Description

technical field [0001] The invention relates to an all-weather long-distance imaging detection system, which adopts laser active lighting imaging technology and automatic target recognition technology to realize automatic recognition and alarm of human targets carrying guns within a range of 3km. Background technique [0002] At present, the commonly used security equipment can be divided into two detection systems: passive imaging and active imaging. Most passive imaging systems use infrared detection, which has a long range but low resolution, making it difficult to accurately detect long-distance dark and small targets. distinguish and identify. Active imaging detection mostly uses laser active lighting, which can achieve all-weather, long-distance, high-resolution imaging, and its detection system mainly depends on the difference in reflection characteristics of the target and background for the irradiated laser. In terms of the temperature difference of the background,...

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Problems solved by technology

[0005] The present invention solves the problem that existing security equipment adopts passive imaging with low resolution, it is difficult to realize accurate resolution and identification of long-distance dark and small targets, and when active laser imaging is used, the detection range is less than 2km, and the light spot flickering effect of the beam is caused. To reduce the uniformity of the target spot, which in turn leads to a decrease in the resolution of the echo image collected by the receiving system, a multi-beam laser active imaging automatic alarm system is provided

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