Laser Vision Aids / Dim Light At Night Autopilot Technology

The night vision technology has been developed rapidly in the aspect of the LLL night vision since 1960s. The LLL night vision technology can allay and override the restriction of eyes in gloomy night and open up the eye vision. The LLL Night Vision Apparatus works by the artless light and needn't unnatural light, so it cannot easily been found by the enemy. But the environment affects it easily and the image we get isn't cleared.In order to solve the question that The LLL Night Vision Apparatus is affected easily by the environment and make it find the aim in the low light level or in the rainy. The dissertation researched The Laser Aids/ The LLL Night Vision Drives' Apparatus. It has important reference value either for designing a system or for estimating performances.The content of every chapter in this dissertation is summarized as following:In chapter 1, the developing history and present situation of LLL night vision system are reviewed. The strategy and the gap between domestic and developed country are described. The research intention and signification of the dissertation are expatiated.In chapter 2, the structure of The Laser Aids/ The LLL Night Vision Drives' Apparatus is introduced. The protecting circuit for the apparatus from spoiling by the intense light and the driving circuit for the laser source are devised which are important in the apparatus.In chapter 3, the atmosphere attenuation of laser at 850nm is analyzed. Its atmosphere attenuation factor and its spectral curve after diminished are studied. The spectral matching factor is calculated between laser at 850nm and The Super Second Generation Image Intensifiers.In chapter 4, the visual range equation is ameliorated through adding luminance gain. The visual range under the specific circumstances is estimated which proves the revised apparent distance detecting equation is effective and the design of the system is feasible.In chapter 5, the whole work is summarized and some problems remaining to be solved are pointed out.