A laser gating imaging search and rescue device

Abstract

The invention discloses a laser gating imaging search and rescue device. The laser gating imaging search and rescue device includes a laser light source (1), an ICCD camera assembly (2), a synchronouscontrol assembly (3), a pitch servo mechanism (4), an orientation servo mechanism (5), and a display control assembly (6), wherein the laser light source (1) is used for emitting a laser pulse to illuminate a target; the ICCD camera assembly (2) is used for receiving a laser light wave reflected by the target; the synchronous control assembly (3) is used for controlling the laser light source (1)and the operating state of the ICCD camera assembly (2); the pitch servo mechanism (4) is used for adjusting the illumination of the laser source (1) and the detection pointing direction of the ICCDcamera assembly (2) in the pitch direction under the control of the display control assembly (6); and the orientation servo mechanism (5) is used for adjusting the illumination of the laser light source (1) and the detection pointing direction of the ICCD camera assembly (2) in the azimuth direction under the control of the display control assembly (6).

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, and relates to a method of actively illuminating a target with a laser, and an ICCD camera to detect the laser echo reflected by the target to realize rapid imaging search for the target, in particular to a laser gating imaging search and rescue device. Background technique [0002] Wide-area, all-weather, all-weather discovery and precise positioning of searched and rescued targets are the development needs of maritime search and rescue equipment. [0003] Rescue at sea is difficult, and it is even more difficult to search and rescue people who have fallen into the water. The following search and rescue operations fully illustrate the difficulty of maritime search and rescue and the lack of development of search and rescue equipment: [0004] Search and rescue personnel still mainly rely on eyes, binoculars, etc. to look out and search the sea surface on aircraft and ships. This...

AI Technical Summary

Problems solved by technology

When using a large field of view, the detection distance is too short due to the limitation of laser energy

[0021] (2) The pulse accumulation detection method cannot realize fast search imaging

[0027] It can be seen that during the exposure time of the camera, the position of the target in the image acquired by the ICCD camera has been moving due to the azimuth search, causing the ICCD camera 11 to acquire a series of overlapping target images, resulting in a decrease in image contrast and blurring

Therefore, the technical approach of long-time exposure of the camera cannot achieve fast search by using the multi-laser pulse accumulation method

[0028] (3) The energy of a single pulse is too low, and the detection capability can only be improved by accumulating multiple pulses, but it also limits the maximum detection distance

[0048] In recent years, although my country has been equipped with dedicated search and rescue helicopters or maritime patrol aircraft, the main search and rescue equipment equipped is airborne photoelectric detection equipment based on passive infrared imaging and visible light detection. Like radar, it is limited by the detection mechanism. The short distance, low search efficiency, and strong influence of weather conditions make the effectiveness of search and rescue helicopters or maritime patrol aircraft not fully reflected

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