摘要
利用GNSS反射信号进行遥感探测,已成为国内外遥感和导航技术领域研究热点之一。星载GNSS-R遥感探测的几何关系和相控阵天线的波束指向算法更加复杂,对算法精度和实时性的要求更高。基于星载GNSS-R应用,给出了星载GNSS-R相控阵天线波束指向算法,对比了2种计算波束指向角的方法,并通过Matlab与STK联合仿真分析说明,使用探测仪速度和位置矢量进行波束角计算的方法,具有更高的精度,且实时性满足要求,适用于星载应用。
The application of Global Navigation Satellite Systems- Reflectometry（ GNSS-R） to remote sensing and exploration is one of the hotspots in the field of remote sensing and navigation technologies. The geometrical relation of spaceborne GNSS-R remote sensing and exploration and beam pointing algorithm of phased array antenna are more complicate,with higher requirements of accuracy and realtime performance. Based on spaceborne GNSS-R application,this paper puts forward spaceborne GNSS-R phased array antenna beam pointing algorithm. The two methods of computing beam pointing angle are compared. The Matlab and STK combined simulation analysis shows that the method using position and velocity vectors for beam angle computing has higher accuracy and realtime performance,and is suitable for spaceborne missions.
出处
《无线电工程》
2016年第3期45-48,共4页
Radio Engineering
