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电子学报  2014 

单站定位中的散射体位置及散射距离的估计方法——合成运动的扩展卡尔曼估计

DOI: 10.3969/j.issn.0372-2112.2014.04.017, PP. 730-735

Keywords: 合成运动,扩展卡尔曼,单站定位,散射体位置估计,散射距离估计,非视距

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Abstract:

圆拟合虚拟单站定位算法是无线网中非视距条件下一种有效的单站定位方法.散射体位置以及散射距离是该算法的两个关键参数,直接决定该算法的最终定位性能.本文提出合成运动的扩展卡尔曼方法,有效抑制定位过程中的二次方项对误差的乘性影响.该方法利用单站的运动信息,并根据相对运动的基本原理,将机动单站运动特性转换为伪目标的运动,在每步递推过程将非线性方程线性化近似,提高散射体位置以及散射距离的估计精度.仿真结果表明,该算法具有良好的估计性能.

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