项目名称： 空间光通信跟瞄误差和光束漂移综合作用下的平均光强分布研究

项目编号： No.61501097

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 蒋大钢

作者单位： 电子科技大学

项目金额： 20万元

中文摘要： 激光大气传输理论中的平均光强分布主要体现的是光束漂移的随机作用结果，当应用于同时存在光束漂移和跟瞄误差的空间光通信时，会面临终端性能分析正确性和大气效应评估准确性的挑战。本项目提出采用光强系综平均方法来研究跟瞄误差和光束漂移综合作用下的平均光强分布，根据不同链路状态下的跟瞄误差与光束漂移的相互作用特点，分别研究开环瞄准状态和闭环跟踪状态下的平均光强分布模型，通过数值仿真和实验验证手段对模型准确性和适用性进行评估。本项目的研究成果可在不同链路状态下正确分析空间光通信性能和准确评估大气效应，有助于深入认知大气效应及其影响，在一定程度上促进空间光通信实用化发展。

中文关键词： 空间光通信；激光大气传输；跟瞄误差；光束漂移；平均光强分布

英文摘要： The mean irradiance profile in the theory of the laser atmospheric propagation mainly represents the random effect result of beam wander, which will meets some challenges about correctly analyzing the free space optical communication (FSO) performance and accurately evaluating the atmospheric effects in the existence of beam wander and FSO pointing error. This proposal suggests adopting an irradiance ensemble average method to research the mean irradiance profile under the comprehensive effects of FSO pointing error and beam wander. According to the interactions between pointing error and beam wander at different link status, the mean irradiance profile model are researched under the condition of open loop pointing and close loop pointing, separately. And the numeric simulation and experiment valuation will be carried out to investigate the models’ accuracy and applicability. This proposal would correctly analyze the FSO performance and accurately evaluate the atmospheric effects at different link status, which will be helpful to intensively understand the atmospheric effects and its influence on the FSO, and will promote the practical development of FSO to some degree.

英文关键词： free space optical communication;laser atmospheric propagation;pointing error;beam wander;mean irradiance profile