中文摘要：

精跟踪是激光无线通信信标光的捕获、瞄准与跟踪系统中的一项关键技术。详细介绍了精跟踪的各部分组成，以高帧频CMOS相机采集光斑，采用质心法提取光斑中心坐标，以高速数模转换器、PZT控制器和高精度振镜作为光路偏转控制系统，以增量式PID算法作为跟踪算法。通过采用Altera公司的Cyclone系列FPGA作为控制芯片，开发了一款独立的低功耗便携式开发平台，满足具体科研应用的项目产品要求。

英文摘要：

Precision tracking is a key technology in beacon＇s acquisition, pointing and tracking system of wireless laser communication. The precision tracking system＇s every part is introduced,it uses high frame rate CMOS camera to acquisition facula of the beacon, qualitative- force to calculate facula center, uses high speed DAC, PZT controller and high- precision galvanometer mirror as optical control system,and incremental PID algorithm as the tracking algorithm. Then using Altera＇s Cyclone series FPGA chip as the whole system＇s controller to develop a separate low - power portable precision tracking platform, which can meet the application of scientific research project.