ZHANG Yue-min, LIU Xiao-li, CHEN Zhou, ZHAO Lu-min, ZHANG Hong, ZHANG Jin-tao. Low-light level telescope based on laser range gate technology[J]. Journal of Applied Optics, 2013, 34(4): 667-671.
Citation: ZHANG Yue-min, LIU Xiao-li, CHEN Zhou, ZHAO Lu-min, ZHANG Hong, ZHANG Jin-tao. Low-light level telescope based on laser range gate technology[J]. Journal of Applied Optics, 2013, 34(4): 667-671.

Low-light level telescope based on laser range gate technology

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  • Under the help of auxiliary lighting on low-light level system by using laser with infrared wavelength, environmental illumination and contrast of object area can be improved, making the object outstand from vision area, which can effectively enlarge the range of low-light detection and improve the observation effects. Adopting range gating technology, properly arranging the work order between laser pulse and gated image intensifier, shielding the object from troubling by inflected light around the object and stray light from airborne suspended particulates, solving coaxial illumination back scattering problem, the object only from the selected range can be observed. Through engineering practices of laser assistant low-light level binoculars, the range gating technology is successfully applied to low-light detecting area, and the recognizable range for medium tank and the truck broadside is up to 1 400 m under simple background conditions, without moonlight or starlight, with illumination of 110-3lx and atmosphere visibility of 10 km.
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