跟踪通信一体化接收光学系统设计

针对机载平台相对位姿变化快、机载设备日趋小型化轻量化等特点，基于大视场凝视扫描的方式，提出一种高帧频CMOS捕获、FSM调节跟踪、APD通信的同轴双光路跟踪通信一体化接收光学系统。介绍了系统的工作原理和方案；设计了一套验证系统，并对该系统的跟踪、瞄准性能进行了优化设计和分析。跟踪光路视场达到±175 mrad，90%能量光斑直径小于10 μm；通信光路视场达到±13 mrad，RMS直径小于3.5 μm。考虑到机载应用的特殊性，进一步分析了该系统杂散光特性和公差影响。分析结果表明:该方案同时满足高概率捕获、高精度跟踪、瞄准以及小型化的要求，对于机载激光通信具有一定借鉴意义。

Design of tracking communication integrated receiving optical system

Aiming at the rapid change of relative position for the airborne platform and the gradual miniaturization and weight reduction of the airborne equipment, a coaxial dual-optical pathtracking communication integrated receiving optical system based on the method of large-field staring scanning was proposed with high frame rates complementary metal oxide semiconductor(CMOS) capture, fast steering mirror (FSM) adjustment tracking and avalanche photo diode (APD) communication. The working principle and scheme of the system were introduced. A set of verification system was designed, and the tracking and aiming performance of the system was optimized and analyzed. The tracking optical path field of view was up to ±175 mrad, and 90% of the energy spot diameter was less than 10 μm. The communication optical path field of view was up to ±13 mrad, and the root-mean-square(RMS) diameter was less than 3.5 μm. Taking into account the particularity of airborne application, the stray light characteristics and tolerance effects of the system were further analyzed. The results indicate that the scheme satisfies the requirements of high probability capture, high precision tracking, aiming and miniaturization, which has certain reference significance for airborne laser communication.