面向深空中继通信的仿真平台设计与实现

发布时间：2018-06-28 02:43

本文选题：深空中继通信 + 仿真平台　；参考：《哈尔滨工业大学》2014年硕士论文

【摘要】：深空中继通信技术使得深空探测中因距离过远、物理阻隔等因素而不能建立起直接通信链路的两个通信节点之间的通信成为可能。而深空探测的高风险和高代价特性要求深空中继通信方案在具体实施之前必须先进行可行性验证,但真实深空环境下的中继通信方案的可行性验证又不能早于中继方案的实施,因而对深空中继通信方案的验证工作只能从理论计算和软件仿真的角度开展。软件仿真以其强大的数学分析计算能力和可视化能力能够更好地完成地面环境下深空中继通信方案的可行性分析工作。因此,本文的研究重点就是开发一套操作简单、分析计算能力强并且能够就深空中继通信方案的某些性能指标进行评估的可视化仿真平台。设计一套由中心服务器程序和通信节点程序构成的混合式对等网络拓扑结构的深空通信仿真平台总体方案,并采用一套常用于高性能服务器领域的客户/服务器通信模式设计实现中心服务器程序和通信节点程序的基本网络框架。在基本网络框架的基础上通过集成卫星工具包仿真软件设计实现中心服务器程序。设计实现中心服务器程序的拓扑构建功能、深空通信仿场景构建功能以及仿真过程同步控制功能。在基本网络框架的基础上通过与具体的深空通信协议相结合设计实现通信节点程序。初步实现基于CFDP文件传输协议的中继文件传输功能以及深空信道下的文件传输丢包模拟功能。基于地火通信,采用设计实现的深空通信仿真平台分别对地火直传链路、火星轨道器中继链路以及日地系拉格朗日点中继链路通信方案进行对比仿真,从文件传输的角度评估了日地系拉格朗日点中继通信方案的性能。
[Abstract]:The technology of deep space relay communication makes it possible to establish the communication between two communication nodes in deep space exploration because of such factors as too long distance and physical barrier. The high risk and high cost characteristics of deep space exploration require the feasibility verification before the implementation of the deep space relay communication scheme, but the feasibility verification of the relay communication scheme in the real deep space environment can not be earlier than the implementation of the relay scheme. Therefore, the verification of the deep space relay communication scheme can only be carried out from the angle of theoretical calculation and software simulation. The software simulation can accomplish the feasibility analysis work of the deep space relay communication scheme under the ground environment with its powerful mathematical analysis calculation ability and visualization ability. Therefore, the research focus of this paper is to develop a visual simulation platform which is simple in operation, strong in analysis and calculation, and can evaluate some performance indexes of the deep space relay communication scheme. A general scheme of deep space communication simulation platform composed of central server program and communication node program is designed. A set of client / server communication mode, which is often used in the field of high performance server, is adopted to design and implement the basic network framework of the central server program and the communication node program. Based on the basic network framework, the central server program is designed and implemented by integrated satellite toolkit simulation software. Design and implementation of the central server program topology construction function, deep space communication simulation scene construction function and simulation process synchronization control function. Based on the basic network framework, the communication node program is designed by combining with the specific deep space communication protocol. The relay file transfer function based on CFDP file transfer protocol and the packet loss simulation function of file transmission in deep space channel are implemented preliminarily. Based on the ground fire communication, the design and implementation of the deep space communication simulation platform are used to compare the ground fire direct link, the Mars orbiter relay link and the solar-terrestrial Lagrange point relay link communication scheme. The performance of the solar-terrestrial system Lagrange point relay communication scheme is evaluated from the point of view of file transmission.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN927.3

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