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基于贝克曼分布的星间激光通信链路性能优化

Link Performance Optimization for Inter-Satellite Laser Communications Based on Beckmann Distribution

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摘要

针对星间激光通信系统易受瞄准误差影响的问题, 在瞄准误差服从贝克曼分布的条件下, 利用三阶中心矩法将其等效为修正后的Rayleigh分布, 分别在中断概率一定和发射功率一定的假设下, 建立了发射功率优化模型和中断概率优化模型, 并计算出了两种假设条件下高斯光束经天线发射时的最优均方根宽度。通过数值仿真, 给出了考虑瞄准误差时的系统中断概率、最小发射功率与最优均方根宽度之间的关系。根据该数值分析结果, 在明确瞄准误差分布规律的基础上, 选择最优的高斯光束均方根宽度, 以实现最优星间激光通信链路性能。

Abstract

Aiming at the problem that the inter-satellite laser communication system is easily affected by the pointing errors, the method of third-order central moment is used to make the pointing error equivalent to the modified Rayleigh distribution under the condition that the pointing errors obey the Beckmann distribution. Under the assumptions that the outage probability and the transmission power are fixed, the optimal model of transmitter power and the optimal model of outage probability are established, respectively. The optimal root mean square width of the Gaussian beam emitted by the antenna under the above two assumptions is calculated. Through the numerical simulation, the numerical relationship of the outage probability and the minimum transmitting power with the optimal root mean square width is given. According to the numerical analysis results, the optimal root mean square width of a Gaussian beam can be selected based on the definite pointing error distributions, so that the optimal link performance for the inter-satellite laser communications is obtained.

Newport宣传-MKS新实验室计划
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中图分类号:TN929.13

DOI:10.3788/AOS201939.0206003

所属栏目:光纤光学与光通信

基金项目:国家自然科学基金(61571446)、国家重点实验室2016年度主任基金(SKL2016ZR03)

收稿日期:2018-07-20

修改稿日期:2018-09-08

网络出版日期:2018-09-25

作者单位    点击查看

宛雄丰:国防科技大学电子对抗学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
郝士琦:国防科技大学电子对抗学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
张岱:国防科技大学电子对抗学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
赵青松:国防科技大学电子对抗学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
徐晨露:国防科技大学电子对抗学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037
唐进迎:国防科技大学电子对抗学院脉冲功率激光技术国家重点实验室, 安徽 合肥 230037

联系人作者:郝士琦(liu_hsq@126.com); 宛雄丰(479850854@qq.com);

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引用该论文

Wan Xiongfeng,Hao Shiqi,Zhang Dai,Zhao Qingsong,Xu Chenlu,Tang Jinying. Link Performance Optimization for Inter-Satellite Laser Communications Based on Beckmann Distribution[J]. Acta Optica Sinica, 2019, 39(2): 0206003

宛雄丰,郝士琦,张岱,赵青松,徐晨露,唐进迎. 基于贝克曼分布的星间激光通信链路性能优化[J]. 光学学报, 2019, 39(2): 0206003

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