基于OOK体制的激光统一测控系统设计与实现

激光统一测控系统采用激光链路同时实现高速通信、高精度测距和时钟同步.为了实现激光统一测控系统，根据异步应答测距方法，设计研制了基于OOK体制的激光统一测控系统原理样机，样机包含两套激光模拟终端，分别向对方发送包含测量数据帧的激光调制信号，并记录发送测量数据帧和接收测量数据帧的本地钟时间，据此计算得到距离、钟差、相对频差的测量结果.样机有线对接试验表明，在码率为2.5 Gbit/s的双向激光通信条件下，测距随机误差为6.2 mm，测距系统误差为1.3 mm，钟差测量随机误差为27 ps，相对频差测量随机误差为2.7×10-13.该样机为激光统一测控设备的研制和应用提供了技术支撑. 

Design and Realization of OOK-Based Unified Laser TT&C System

Unified laser TT&C system can achieve duplex high speed communication, high precision range measurement and clock synchronization between two terminals simultaneously. To achieve the unified laser TT&C system, a prototype of laser communication system was developed based on on-off keying (OOK) and realized to simulate the space terminals. It was arranged with two set simulation terminals, used to send laser modulated signal separately, record the transmitting and arriving time of data frames, and based on the data to calculate the range, time transfer error and frequency transfer error of the measurement results. The terminals were linked via single-mode fibers with length of about 22 km. Along with the duplex laser communication demonstration with data rate of 2.5 Gbit/s, the high measurement precision can achieve 6.2 mm for ranging random error, 1.3 mm for ranging systematic error, 27 ps for time transfer error, 2.7×10^-13 for frequency transfer error. The prototype provides a technical base for the development and upgrade of the unified laser TT&C equipment in the future.