为了提高紫外通信系统中接收机探测信号的灵敏度和效率,设计光学天线增强对大气中微弱信号的收集能力.结合紫外光通信系统的实际工程背景,对光探测中的复合抛物面聚光器(CPC)进行旋转、平移、截顶和截底4种优化,并做了详细的计算、模拟与仿真；通过对不同优化方法的最大入射角、接收光通量效率以及入射角与采集率关系的计算分析,得出不同参数优化后的工程适用条件,即负向旋转法可用于视线直射远距通信,截底法适用于非视线散射近距通信,而截顶法可用来替换标准CPC并达到节约材料成本的目的.%In order to enhance detectors' sensitivity and efficiency in UV communication system, an optical antenna was designed to strengthen the ability of collecting weak light signal in atmosphere. Based on the practical engineering background of UV optical communication system, a compound parabolic concentrator (CPC) for optical detection was optimized using rotation, translation, cutting of top and cutting of bottom respectively. Calculation, simulation and emulation of CPC were conducted. The parameters, such as maximum incident angle, flux efficiency and relationship between incident angle and the collection rate in different optimized methods for the compound parabolic concentrator for light detection were calculated and analyzed. Then different engineering conditions where different optimized methods worked were deduced. Namely, the negative direct rotation method can be used for line of sight distance communication. Cutting of bottom method can be served for the non-line-of-sight scattering short-range communications, and cutting of top CPC can be used to replace the standard one to save material cost.
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