【摘要】 提出一种较全面的空间光通信系统结构。该系统的光发射接收子系统采用三发三收的设计方法,以增大光的发射功率和接收功率;APT子系统采用望远镜进行粗瞄准,音频调制光标信号进行精瞄准;控制子系统采用Ethernet接口,远程通过Internet对系统进行测量和控制的设计方法。给出一个近地大气空间光通信系统的设计实例, 其信号传输速率为155Mbps,传输距离为4km,在误码率不大于10-9条件下,系统接收灵敏度达到-52dBm。更多还原

【Abstract】 A complete structure of space optical communication system is proposed. The scheme tri-transceivers are adopted in the optical transmitting and receiving subsystems for enhancement optical transmitting and receiving power. In acquire pointing and tracking subsystem, coarse pointing is performed with a telescope and fine pointing is carried out by modulating cursor signal with audio frequency. The subsystem is controlled through Ethernet interface. The remote measurement and control are carried out with internet. A practical design example for near-earth atmospheric space optical communication system is given. Its signal transmission rate is 155Mbps and transmission range is 4km. Under the conditions of error rate no more than 10-9, the receiving sensitivity of the system reaches -52dBm.更多还原