基于方向回溯天线的姿态不稳定小卫星通信  

Posture Unstable Small Satellite Communication System Based on Retrodirective Arrays Antenna

作　　者：夏虹 王渊 Xia Hong;Wang Yuan(School of Electronic Engineering and Automation,Guilin University of Electronic Technology,Guangxi,Guilin,541004,China;School of Information and Communication,Guilin University of Electronic Technology,Guangxi,Guilin,541004,China)

机构地区：[1]桂林电子科技大学电子工程与自动化学院,广西桂林541004 [2]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《仪器仪表用户》2018年第5期18-22,59,共6页Instrumentation

基　　金：国家自然科学基金资助项目(61461013);广西无线宽带通信与信号处理重点实验室基金资助项目(GXKL06160103);桂林电子科技大学创新团队基金资助项目

摘　　要：由于小卫星对空间重量要求越来越敏感,传统小卫星包含姿态控制系统,占了很大一部分重量和体积,增加了项目复杂度和研发周期,所以小卫星趋向于小型化、轻量化是未来研究的方向。为进一步减小卫星重量和体积,提出一种在轨运行的无姿态控制小卫星通信方案。当小卫星处于缓慢的不确定运动状态时,通过射频开关选通六面体小卫星一个面的射频通路,结合该面上的方向回溯天线,应用软件无线电技术,给出了姿态不稳定的小卫星和地面之间的通信链路难以维持的解决方案。实验结果验证了射频开关选通射频发射通道满足系统要求和小卫星通信板的接收功能正常,说明了星端通信中继器的射频部分、基带传输部分以及嵌入式软件部分设计的正确性。Because small satellites are becoming more and more sensitive to space weight requirements,traditional small satellites include posture control systems,which account for a large part of weight and volume,increasing project complexity and research cycle,so small satellites which tend to be miniaturized and lightweight is the direction of the research in the future.In order to further reduce the weight and volume of satellites,an no attitude controller small-satellite in orbit communication scheme is proposed.When the small satellite is in a slow and indefinite state of motion,the radio frequency switch select the RF channel on one side of the hexahedral small satellite,combining with retrodirective arrays antenna,using software radio technology,giving the solution that the communication link between the unstable satellite and the ground is difficult to maintain.The experimental results verify that the RF switch select RF transmitting channel meets the system requirements and the receiving function of the small satellite communication board is normal,indicating the correctness of the RF part,the baseband transmitting part and the embedded software part of the satellite communication repeater.

关 键 词：软件无线电 小卫星通信 方向回溯 姿态不稳定 

分 类 号：TN929.5[电子电信—通信与信息系统]