三角定位偏差估算

Evaluation of Warp about Trianglation Location

传统的三角定位是通过对位置的估计实现的。提出了一种基于两观察站位置偏差估计对运动辐射源定位的方法,采用优化的最小二乘和卡尔曼滤波算法实现定位。这种算法可使定位误差圆概率模糊区迅速减小,缩短收敛时间,实现了快速定位跟踪的目的。建立了位置偏差的状态方程和测量方程,用上述算法进行了计算机仿真。该方法与位置估计仿真曲线进行了比较,收敛时间从2 s降低到1 s,并且提高了定位精度。

Traditional triangulation location is realized by location evaluation. This paper brings forward the method which locates the mobile radiation source based on the position error revaluation of two obsevation station, realizes the location by use of the least square evaluatio and calman filter algorithm. The algorithm can minish the CEP of location which decreases the convergent time, realizes the target of location and tracking. This paper founds the equation of station and measurement about location warp, makes the computer simulation with the above algorithm. The method compares with the simulation curve of location evaluation,its convergent time decreas from 2s to Is,and the location precision is improved.