多传感器布局和目标跟踪精度分析

Multi-sensor's Geometry Position and Target Tracking Accuracy Analysis

基于目标位置估计的C ram er-R ao限和几何精度稀释(GDOP)来研究组网的多异质非线性传感器系统中,传感器和目标的相对位置对目标跟踪精度的影响。分析表明,除了传感器的测量误差、目标的距离外,传感器到目标视线的夹角大小对目标跟踪精度也有一定的影响,影响的大小和传感器的横向径向测量误差的比值大小有关。结合工程应用,分别对2个和3个不同类型的传感器组合进行了讨论。

The effects of netted multi-sensor system geometry on the performance of target tracking accuracy were discussed. Analyses were based on the Cramer-Rao low bound （CRLB） and geometry dilution of precision（GDOP） in 2-dimensional plane. It is concluded that target tracking accuracy is dependent not only on the distances between the sensors and the target but also on the angles between the sensors＇ line of sight to the target. Scenarios composed of two and three sensors were discussed.