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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。
In the space optical communication system, the capture technology of the terminal platform’s target light is a key technology of communication link establishment. Taking into account the traditional scanning capture mode, the system has low acquisition probability and takes a long time, which is not conducive to the establishment of the link of the communication system. Therefore, it is proposed to use GPS to locate the target fast, and to use horizontal and pitch reference sensors to transmit wirelessly using the GSM network. APT system to complete the target capture of the terminal technology, and the establishment of the target rapid capture system. Based on this system, a number of experimental studies have been carried out. The results show that the probability of a fixed point acquisition can reach 100%. For the simulated target motion capture, the average acquisition time increases and the acquisition probability decreases as the simulated rotation speed increases. However, Maintained above 60%; for low-speed dynamic capture, but also better to complete the system link establishment needs.