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星载激光对水下目标通信可行性研究
引用本文:刘金涛,陈卫标.星载激光对水下目标通信可行性研究[J].光学学报,2006,26(10):441-1446.
作者姓名:刘金涛  陈卫标
作者单位:1. 中国科学院上海精密机械研究所先进激光技术与应用系统实验室,上海,201800;中国海洋大学电子工程系,青岛,266071
2. 中国科学院上海精密机械研究所先进激光技术与应用系统实验室,上海,201800
摘    要:简要分析了通信信道中各传输介质的特性,确定了合理的传输介质光学参量。并根据一定的通信系统参量,利用蒙特卡罗方法模拟了水下目标接收信号的时间和空间分布。蒙特卡罗估计误差与平均值比值的上限小于0.3%。根据模拟的结果,得出了优化的接收系统采样时隙和接收望远镜视场角,进而计算了接收信噪比。在此基础上,基于激光脉冲的脉冲位置调制(PPM)方式和最大似然检测,计算出通信系统的误码率。研究结果表明,在较恶劣环境条件下,利用星载激光系统可以实现对水下目标的良好通信。

关 键 词:激光通信  星载激光  水下目标  蒙特卡罗模拟
文章编号:0253-2239(2006)10-1441-6
收稿时间:2005-11-04
修稿时间:2006-04-25

Feasibility Study of Laser Communications from Satellite to Submerged Platform
Liu Jintao,Chen Weibiao.Feasibility Study of Laser Communications from Satellite to Submerged Platform[J].Acta Optica Sinica,2006,26(10):441-1446.
Authors:Liu Jintao  Chen Weibiao
Abstract:The) characteristics of media in communication channel are analyzed briefly and the reasonable optical parameters of media are adopted.With certain communication system parameters the temporal and spatial distributions of the received signal from submerged platform are simulated using Monte Carlo method.The upper limit of the ratio of Monte Carlo estimated error to averaged value is about 0.3%.From the simulated results,the optimized sampling timing of receiver and field of view of telescope are obtained.Also the signal-to-noise ratio of the receiver is calculated.Based on this,the error probability of the communication system is deduced from laser pulse position modulation and maximum likelihood detection.The results show that under severe environment robust laser communication from a satellite to a submerged platform can be achieved.
Keywords:laser communications  satellite-based laser  submerged platform  Monte Carlo simulation
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