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Issue:
An Improvement CHAN Algorithm Based on TOA Position
Author(s):
YANG Tian-chi
,
JIN Liang
,
CHENG Juan
Pages:
819
-
822
Year:
2009
Issue:
4
Journal:
Acta Electronica Sinica
Keyword:
无线定位
;
改进CHAN算法
;
TOA估计
;
虚拟基站
;
Abstract:
本文提出了一种基于TOA参数的CHAN改进定位算法.首先利用坐标平移的方法,消除定位方程中的未知参数,得到移动台位置的一次估计;其次通过对一次定位结果误差的分析表明基站的几何位置结构和到达距离对定位误差具有不同的"贡献"度,依据"贡献"度大小的不同,对大"贡献"度采用小权值而对小"贡献"度采用大权值的原则,提出了虚拟基站的方法来减小系统的总体误差,从而提高定位精度.仿真结果验证了本文算法的有效性.
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