多雷达距离测量空间定位方法及精度分析

针对影响雷达目标定位误差主要是测向系统误差,提出了一种基于多雷达距离测量空间定位方法,并对其定位的精度进行了分析。该方法基于ECEF坐标系,采用多部雷达对目标探测距离交汇的方法,直接计算目标的空间位置,只需要确定各雷达站的大地坐标,就可以给出目标的大地坐标,可以有效解决地球曲率所带来的坐标转换问题,并且不涉及高次方程组和多值解判断,也不涉及迭代初值计算。该定位系统不仅能得到很高的定位精度,同时,作用距离可以很远,能较好地解决多雷达距离测量交汇定位问题。

Locating Algorithm and Accuracy Analysis for Multi-Radar Range Detecting

Considering that the orientation detecting error is the key factor affecting the quality of ship borne detectingthe authors proposed a location algorithm for multi radar range detecting and made and accuracy analysis for it.The spatial location of the target was caculated out based on ECEF coordinate system by adopting the multi radar range detecting cross location.The algorithm needs only the accurate positon of radars for obtaining the position of the targetwhich can solve the coordinate transformation problem caused by the earth curvature.The system can obtain high locating accuracy and long operating distancewhich can preferably solve the far diatance multi radar range detecting problem.