三角交叉无源定位位置偏差估计滤波算法研究

Algorithm Research of Passive Location With Triangulation Bearing Through Estimating Position Error

提出了一种基于两观测站的三角交叉法对机动目标无源定位的算法 ,不是采用传统的对机动目标位置进行估计 ,而是直接对机动目标的位置偏差进行估计滤波 ,使定位的模糊区域迅速缩小 ,以达到快速定位跟踪的目的。列出了对位置偏差估计的状态方程和测量方程 ,用加权的最小二乘估计和卡尔曼滤波算法 ,实现了定位和跟踪。进行了计算机仿真 ,得到了良好的效果。

The algorithm of passive location with triangulation bearing by two stations is presented in this paper. It does not use the method to estimate the position of the moving target as usual, but uses method to estimate the position error of moving target. This method can reduce the calculating time and blurring area of locating observably. The state equation and detecting equation of the position error of moving target are built, the location and track to moving target is achieved by least-square estimation and Kalman filter algorithm. The good simulation result is achieved.\;