光电目标快速捕获系统设计及其实验研究

在空间光通信系统中，终端平台目标光的捕获技术是通信链路建立的一项关键技术。考虑到传统的扫描捕获方式，系统捕获概率低、且耗时长，不利于通讯系统链路建立，因此提出采用GPS 进行目标快速定位，搭配水平和俯仰基准传感器，利用GSM 网进行无线传输，进而辅助APT 系统完成目标捕获的终端技术，并建立了目标快速捕获系统。基于该系统开展了多项实验研究，结果表明:对于固定点捕获，概率可达100%；对于模拟目标运动捕获，当模拟转速增大时，捕获平均时间增大，捕获概率降低，但仍然能维持在60%之上；对于低速动态捕获，也能较好地完成系统链路建立需求。

Design and experimental study of fast acquisition system for optoelectronic target

In the free-space optical communication system, the acquisition technology of opto-electronic target for terminal platform is a key technology to establish a communication link. However, conventional scan method usually leads to low capture probability and the long time consumption, and count against the establishment of the communication link. So the GPS technology was adopted to complete the rapid acquisition, with the level and pitch reference sensor, and GSM network for wireless transmission was adopted. Finally, some acquisition experiments were done. The experimental results showed that the acquisition probability is 100% for fixed-point acquisition. For the simulated target acquisition, the increase of simulation speed could result in the increase of average time and the decrease of capture probability with minimum value of 60%; and the requirement for the link establishment can be satisfied for low-speed acquisition of the locomotive object.