摘要
为了提高天线指向精度,本文提出了一种星载可动天线的安装误差补偿方法。该方法根据卫星结构坐标系与立方镜坐标系间的关系及立方镜坐标系与天线结构坐标系间的关系,运用欧拉角坐标转移方式,得到对天线安装误差进行补偿的坐标转移矩阵。并且针对安装误差的特点,对坐标转移矩阵进行简化,只需要在轨上注3个参数即可实现对天线安装误差的补偿。仿真结果表明,在安装误差≯1°的情况下,补偿后的指向误差最大值≤0.05°;在安装误差≯0.5°的情况下,补偿后的指向误差最大值≤0.01°,补偿后的指向误差可接受。星载可动天线安装误差补偿方法可有效补偿安装误差对天线指向的影响,上注参数少易于实现。
In order to improve the pointing accuracy of the antenna,a method to compensate the installation error of the satellite-borne movable antenna is proposed.According to the relationship between satellite structure coordinate system and cubic prism coordinate system and the relationship between cubic prism coordinate system and antenna structure coordinate system,the coordinate transfer matrix to compensate the installation error of antenna is obtained by using Euler angle coordinate transfer method.According to the characteristic of installation errors,the coordinate transfer matrix is simplified,and only three parameters are injected into the orbit to compensate the installation errors of the antenna.The simulation results show that the maximum pointing error after compensation is less than 0.05 degrees in the case of installation error 1 degrees and less than 0.01 degrees in the case of installation error 0.5 degrees.The pointing error after compensation is acceptable.The installation error compensation method of satellite-borne movable antenna can effectively compensate the influence of installation error on antenna pointing,and the injection parameters are few and easy to realize.
作者
李华春
孙正海
余晓川
LI HuaChun;SUN ZhengHai;YU XiaoChuan(China Academy of Space Technology(Xi’an),Xi’an 710000,China)
出处
《空间电子技术》
2019年第5期63-66,共4页
Space Electronic Technology
关键词
星载可动天线
安装误差
指向误差
Satellite-borne movable antenna
Installation error
Pointing error
作者简介
李华春(1982—),工程师,研究方向为卫星跟踪测量与通信技术。E-mail:lhc745000@aligun.com。
