月地光通信的链路设计(英文)

Link Design of Moon-to-Earth Optical Communication

光通信技术可以满足未来深空探测对较大带宽的需求,因此光通信技术具有很好的应用前景.本文主要对月地光通信的链路进行了设计,从而实现月地通信链路中数据的大容量传输.首先,文中对月地光通信系统链路中主要参数设计进行仿真分析,主要包括信号光的接收功率、链路容量,以及收发天线增益和信息空间损耗的近似计算.另外还对脉冲位置调制下的信息传输效率和带宽利用率进行了仿真分析.结果表明,收发天线的直径和信息帧的时隙数对通信的影响较大,在通信的过程中需要对其进行优化设计,并且光源波长的选择也要合理.因此,本文的研究对实际的月地光通信链路设计具有一定的理论指导意义.

Optical communication technology shows promising prospects to fulfill the large bandwidth requirements of future deep-space exploration.This paper mainly studies the link design of Moon-toEarth optical communication,which can achieve large capacity transmission of data in Moon-to-Earth optical communication links.Firstly,The main parameters on optical communication system are simulated and analyzed.This primarily includes the received power and the link capacity.We also provide an approximation calculation of the antenna gain and the space loss.In addition,we analyze and simulate the transmission efficiency and the bandwidth utilization for pulse-position-modulation.Finally,the simulation results show that the diameter of antenna and the slot number of an information frame should be optimized in the communication,and the communication wavelength should be also rationally selected.Consequently,this research demonstrates much theoretical significance on the actual link design of Moon-to-Earth optical communication system.