Automatic multi-beam laser active imaging alarm system

Abstract

An automatic multi-beam laser active imaging alarm system relates to an all-weather remote imaging detection system and solves the problems that when adopting passive imaging, the traditional security device has low resolution ratio and the accurate resolution and recognition of small remote dark targets is difficult to realize, when the traditional security device adopts laser active imaging, the detection range of the traditional security device is less than 2km, and the image resolution of echoes collected by a receiving system is reduced as the optical spot scintillation effect causing lights beams leads the uniformity of target light spots to be reduced; and the whole system is jointly composed of a laser, a polarizing beam splitting system, a transmitting system, the receiving system, a CCD (Charge-Coupled Device) detector, an image collecting system and an automatic target recognition system. Finally, the automatic recognition and alarm on human body targets holding guns is realized. The automatic multi-beam laser active imaging alarm system provided by the invention is an automatic alarm system which can realize remote high resolution and high-intellectualized imaging.

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,...

AI Technical Summary

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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