摘要
提出了一种基于纯距离跟踪的空间目标运动轨迹提取的矢量脱靶量参数估计新方法.该方法利用脉间频率步进体制的脱靶量测量系统获得较为精确的瞬时距离信息.通过建立目标运动模型,采用纯距离目标跟踪定位的有限差分扩展卡尔曼滤波算法,获得目标运动的精确轨迹.利用跟踪得到的空间位置点,对矢量脱靶量参数进行估计.仿真结果表明该方法可以得到满意的矢量脱靶量估计结果.
A new approach for estimating the miss distance parameters of target was presented based on the extraction of target motion trajectory in space using range-only tracking measurements. In this method, vector miss distance measurement system based on stepped frequency pulse trains was utilized to obtain exact transient information of distance. Through constructing motion model of target, the finite-difference extended Kalman filter was adopted to obtain more accurate motion trajectory of target with range-only measurements. Simulation results indicate the robustness and feasibility of the proposed method in parameter estimation of miss distance.
出处
《弹道学报》
EI
CSCD
北大核心
2007年第2期29-32,50,共5页
Journal of Ballistics
关键词
扩展卡尔曼滤波
脱靶量
距离跟踪
频率步进
extended Kalman filter
miss distance
range tracking
stepped frequency
