低轮廓动中通极化稳定控制系统分析  

Analysis of polar-stabilizing control system of sat-com on the move

作　　者：伍宗伟[1] 姚敏立[1] 蔡国新[1] 

机构地区：[1]第二炮兵工程学院,陕西西安710025

出　　处：《电子技术应用》2009年第5期105-108,共4页Application of Electronic Technique

基　　金：第二炮兵武器装备预研资助项目(203020201)

摘　　要：针对动中通接收中出现的极化稳定问题,分析了双极化复用信号极化失配原因及产生的影响。提出了通过极化陀螺和移相网络实现的极化稳定方案,这是当前某些国外公司采用的方法,但是其造价高,难实现。在深入研究之后,提出了自适应递推加权系数的变极化控制方案,利用信号自身信息来达到控制目的。仿真结果表明能够较好地实现极化稳定,适应于低成本动中通。In order to solve the polar-stabilizing problem of the sat-corn on the move, the polarization mismatching factor of receiving dual-polarized satellite signal for sat-com on the move caused from its high motion is discussed. Two methods are put forward, and one. is to make it by using polar-gyro and phase-shifting network which is now employed by many foreign compa- nies. However, it is costly and difficult to implement. The other is supposed to use the information of the signal itseff, which ap- plies adaptive recursive-estimation algorithm. The results of modulation indicate it is feasible to be used in sat-com on the move.

关 键 词：动中通 极化稳定控制 变极化 自适应 

分 类 号：TN973.3[电子电信—信号与信息处理]