摘要
在分析GNSS-R基本几何关系和多种镜面反射点估计算法的基础上,提出一种新的GNSS-R海面风场探测中镜面反射点的估计算法。该方法首先求得GNSS卫星以及接收机在地球表面的投影坐标;然后通过向量和的形式获得镜面反射点的初始迭代位置;最后利用二分的思想,求得镜面反射点的位置坐标,并通过导航模拟器模拟出GNSS卫星和接收机位置数据,利用Matlab对该算法的正确性进行验证。仿真结果表明,提出的镜面反射点求解算法不仅可以正确估算出GNSS-R镜面反射点的位置信息,且模型简单、迭代次数少。
A new estimation algorithm for specular reflection points in the wind field detection with GNSS R is presented on the basis of analysis of the basic geometric relations of GNSS R and various estimation algorithms of specular reflection points. The projection coordinates of GNSS satellites and receivers on the earth′s surface are obtained. The initial iteration positions of the specular reflection points are obtained by means of vector sum. The position coordinates of specular reflection points are derived by means of dimidiate thought. The position data of GNSS satellite and receiver is got by navigation simulator. The correctness of the algorithm was verified with Matlab. The simulation results show that the algorithm proposed in this paper can not only correctly estimate the position of GNSS R mirror reflective points,but also have a simple model and less iterations.
作者
刘原华
刘豪
牛新亮
LIU Yuanhua;LIU Hao;NIU Xinliang(College of Communication and Information Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China;Xi’an Branch of China Academy of Space Technology,Xi’an 710100,China)
出处
《现代电子技术》
北大核心
2019年第17期6-9,共4页
Modern Electronics Technique
基金
陕西省自然科学基础研究计划项目(2016JQ6033)
关键词
海面风场探测
镜面反射点
GNSS-R
初始迭代位置
位置坐标
正确性验证
sea surface wind field detection
mirror reflective point
GNSS-R
initial iteration position
position coordinator
correctness verification
