移动卫星通信天线系统的矢量控制法

Vector Control Method of Antenna System for Mobile Satellite Communications

本文论述移动卫星通信天线系统的矢量控制方法,采用天线对准卫星不依赖于卫星信号,并且借助于捷联惯导系统的数字平台可以排除角运动干扰和长距离线运动干扰。为实现在赤道附近大范围地区的移动卫星通信,本文讨论了方位-俯仰与横滚-俯仰两种结构的矢量控制方法和它们的控制方程。另一台MEMS捷联惯导系统安装在天线上,给出了天线导航参数。天线信号的极值搜索法提高了跟踪精度。GPS信号用于与捷联惯导系统构成GPS/SINS组合系统以修正捷联惯导系统的误差,最后给出了移动卫星通信天线矢量控制系统方框图。

A vector control method（ VCM）of antenna system for mobile satellite communications（ MSC） was introduced. The antenna aligns the satellite is independent from the satellite signal by the use of VCM, and the antenna can eliminate disturbance of angular motion and disturbance of travel motion dependent on digital platform of SINS. The VCM on azimuth-pitch structure and roll-pitch structure were discussed,and the equations of VCM were proposed for working on Equator and near regions. The SINS of other MEMS was fixed on the antenna,which can be given navigation parameters of antenna. Tracking precision was risen for making search after satellite signal maximum. The GPS receiver was used to correct the SINS errors,so that the GPS/SINS group was an integrated system and a block diagram on antenna system of VCM for MSC was proposed.