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伴随着激光的产生,一种新颖别致的通信——大气激光通信也横空出世了。1960年,当第一台激光通信机在美国问世时,各国的通信工程师们如获至宝,欣喜若狂。有人甚至大胆地宣称:大气激光通信的发展,将导致无线电通信使命的终结。但时过不久,大气激光通信的缺陷日渐暴露,即随着天气的变幻无常,通信质量极不稳定,甚至经常中断。原来,由于大气对它的散射、吸收,以及大气湍流对激光束的干扰,使得激光在传播过程中受到很大衰减,尤其是下雨、落雪和起雾等天气,光衰现象更为严重,这成了激光通信的致命弱点。激光大气传播不是一种全天候的通信手段。激光无法降服大气这个庞大的天然“屏障”,实在令通信科学家们大伤脑筋。但激光通信的巨大通信容量激励着他们去寻
With the laser generation, a novel and unique communication - atmospheric laser communication is also turned out. When the first laser telegraph was introduced in the United States in 1960, national communications engineers were ecstatic. Some even boldly declared that the development of atmospheric laser communications will lead to the conclusion of the mission of radiocommunication. However, shortly afterwards, the flaws in atmospheric laser communications have become increasingly exposed, that is, as the weather changes erratically, the quality of communications is extremely unstable and often interrupted. It turned out that due to its atmospheric scattering, absorption, and atmospheric turbulence on the laser beam interference, making the laser in the process of transmission greatly attenuated, especially in the rain, snow and fog weather, the light fades more serious, This has become the fatal weakness of laser communications. Laser atmospheric transmission is not an all-weather means of communication. Laser can not surrender the atmosphere of this huge natural “barrier”, it really makes the communication scientists big headache. However, the huge communication capacity of laser communication motivates them to search