| 多普勒效应下星间光通信系统的仿真性能分析 |
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| 引用本文： | 李龙,樊养余,张政伟,谭庆贵. 多普勒效应下星间光通信系统的仿真性能分析[J]. 计算机仿真, 2009, 26(1) |
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| 作者姓名： | 李龙 樊养余 张政伟 谭庆贵 |
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| 作者单位： | 1. 西北工业大学信号处理与无线光通信研究所,陕西,西安,710072
2. 西安空间无线电技术研究所,陕西,西安,710100 |
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| 摘 要： | 构建卫星光通信系统的仿真模型,在不同信道传输环境下,对相干和非相干检测下的卫星光通信系统性能进行了分析比较.结果表明:在具有相同的轨道的星间光链路之间,由于相对速度恒定,不存在多普勒效应,采取相干检测下的系统误比特率要小于非相干检测下的系统误比特率;当卫星处于不同的轨道时,存在多普勒效应,相干检测下的系统误比特率要远远大于非相干检测下的系统误比特率;在现有的条件下,当存在多普勒效应时,宜采用非相干检测来进行检测解调.
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| 关 键 词： | 卫星光通信 多普勒效应 误比特率 |
Performance Analysis of Satellite Optical Communication System under Doppler Effect |
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| LI Long,FAN Yang-yu,ZHANG Zheng-wei,TAN Qing-gui. Performance Analysis of Satellite Optical Communication System under Doppler Effect[J]. Computer Simulation, 2009, 26(1) |
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| Authors: | LI Long FAN Yang-yu ZHANG Zheng-wei TAN Qing-gui |
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| Affiliation: | 1.Institute of Signal Processing & Optical Wireless Communication;Northwestern Polytechnical University;Xi'an Shanxi 710072;China;2.Xi'an Institute of Space Radio Technology;Xi'an Shanxi 710100;China |
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| Abstract: | This paper attempts to establish a satellite optical communication system simulation model and present the idiographic channel parameters.The satellite optical communication performances in various transmission environments are compared and analyzed in terms of the coherent and non-coherent examination.The simulation results indicate that the BER in terms of the coherent examination is lower than that of non-coherent examination in the situation of the same orbit Inter-satellite optical links;the BER(Bit Er... |
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| Keywords: | Satellite optical communication Doppler effect BER |
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