摘要
提出了一种分布式超宽带雷达空间目标定位系统,其主要思想是通过多个分布式超宽带雷达对目标进行精确测距,利用所得目标距离信息创建空间曲面,通过求解不同曲面的相交点进而实现对空间目标的定位。文中建立了椭球定位模型,在CHAN算法的基础上推导出用于三维椭球面相交位置点求解的方法。分析了雷达测距精度、雷达基线长度对系统定位精度的影响。仿真结果表明,当测距误差较小、基线长度适当时,该系统可以得到较高的定位精度。
A target location system which is based on the distributed ultra-wideband radar is proposed in this paper.By using the distance information we can create some 3-D surfaces and by intersecting of these surfaces we could make out the position of the target.Based on the CHAN algorithm,an improved one is proposed in this paper.The influence of the error of distance scaling and the length of baseline on the positioning precision is analyzed. When the error of distance scaling is small and the length of baseline is proper,the simulation shows that high positioning precision could be obtained.
出处
《雷达科学与技术》
2010年第3期199-203,208,共6页
Radar Science and Technology
关键词
超宽带雷达
椭球定位
测距误差
定位精度
ultra-wideband radar
ellipsoid location
error of distance scaling
positioning precision
