无人机对地光通信临界调制速率锁定

发布时间：2018-04-05 00:07

本文选题：光通信临界调制速率　切入点：飞行层次　出处：《红外与激光工程》2017年10期

【摘要】：为了在现有条件下对无人机遂行对地光通信任务的调制传输速率有一个准确的衡量,需要建立合适的机载光通信大气信道模型。首先划分空域范围,将影响要素限定在对流层内;之后基于对流层典型大气效应建立了综合影响模型,又进一步建立了无人机对地光通信的信道传输模型。在现有条件下进行无人机参数设置,并对不同高度条件下无人机对地光通信的有效信息总量进行仿真,得到了遂行光通信任务的最佳通信高度为2 660 m;在此高度条件下,通过选取合适调制速率点对信道传输模型进行仿真。结合临界有效信息总量的设置及仿真结果,在满足光通信系统反馈检验需求的基础上,将无人机光通信临界调制速率需求锁定在1.12 Gbps。为现有条件下光通信调制系统的设计提供了评估标准,具有较强的指导意义。
[Abstract]:In order to accurately measure the modulation and transmission rate of UAV to ground optical communication mission under existing conditions, it is necessary to establish an appropriate atmospheric channel model for airborne optical communication.Firstly, the influence elements are confined to the troposphere, and then a comprehensive influence model is established based on the typical atmospheric effects in the troposphere, and the channel transmission model of UAV to ground optical communication is further established.Under the existing conditions, the parameters of UAV are set, and the total effective information of UAV to ground optical communication is simulated under different altitude conditions, and the optimum communication height of carrying out optical communication task is 2 660 m.The optimum communication height is 2 660 m.The channel transmission model is simulated by selecting appropriate modulation rate points.Combined with the setting of critical effective information and simulation results, the critical modulation rate requirement of UAV optical communication system is locked at 1.12 Gbps on the basis of satisfying the demand of optical communication system feedback test.It provides an evaluation standard for the design of optical communication modulation system under the existing conditions, and has a strong guiding significance.
【作者单位】：空军航空大学飞行器控制器系;长春理工大学电子信息工程学院;
【基金】：武器装备军内科研项目(KJ2015023300B41068)
【分类号】：TN929.1

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