基于GEO的低轨航天器星间通信链路控制系统设计  

Design of the Control System for the Inter-satellite CommunicationLink of the LEO Spacecraft Based on GEO

作　　者：孙鹤锋 周学军[1] Sun Hefeng;Zhou Xuejun(School of Physics and Electronic Information,Yan'an University,Yan'an 716000,China)

机构地区：[1]延安大学物理与电子信息学院,陕西延安716000

出　　处：《计算机测量与控制》2020年第12期112-116,165,共6页Computer Measurement &Control

摘　　要：目前提出的低轨航天器星间通信链路控制系统控制速率低,导致俯仰角和方位角响应能力差,角速度、角加速度、角度指向的误差较大;针对上述问题,基于GEO设计一种新的低轨航天器星间通信链路控制系统,分析低轨航天器星间通信链路,利用星间信号发射器、信号接收传感器、发射天线、接收天线和高增益天线,确定数据编码,确定数据传输方式;分别设计星地链路协议控制程序和星间链路协议控制程序,实现协议之间的控制;实验结果表明,基于GEO的低轨航天器星间通信链路控制系统下行平均传输速率为4.8 Mbit/s,控制速率高,角速度、角加速度、角度指向的误差分别为5°/s、3°/s、75°/s,表明所设计系统具有较强的响应能力,控制参数鲁棒性强,能够有效降低控制误差。The low control rate of the proposed inter satellite communication link control system for LEO Spacecraft leads to poor response ability of pitch angle and azimuth angle,and large error of angular velocity,angular acceleration and angle direction.In view of the above problems,a new LEO Spacecraft inter satellite communication link control system is designed based on Geo.The inter satellite communication link of LEO Spacecraft is analyzed.The data coding and data transmission mode are determined by using inter satellite signal transmitter,signal receiving sensor,transmitting antenna,receiving antenna and high gain antenna.The satellite ground link protocol control program and the inter satellite link protocol control program are designed respectively to realize the control between the protocols.The experimental results show that the average downlink transmission rate of the LEO Spacecraft inter satellite communication link control system based on geo is 4.8 Mbit/s,and the control rate is high.The errors of angular velocity,angular acceleration and angle direction are 5°/s,3°/s and 75°/s respectively.It shows that the designed system has strong response ability,strong robustness of control parameters and can effectively reduce control error.

关 键 词：GEO 低轨航天器 星间通信 通信链路 链路控制 控制系统 

分 类 号：TN927[电子电信—通信与信息系统]