摘要
GSM网络本身不是面向定位的系统,所能提供用于定位的测量数据有限,故其定位精度受到限制。为了提高其定位精度,并尽量不改变网络的软硬件设施,提出了一种基于几何精度因子(GDOP)加权的GSM移动台位置估计数据融合模型,该模型采用信号场强差作为基本的定位方法,采用几何精度因子加权对定位中间结果进行处理。通过采用某城市的实测数据对本文提出的模型进行验证,结果表明,该模型可以提高移动台的定位精度。
GSM network is not a positioning oriented system since the position information provided by GSM is very limited, resulting in very low location accuracy. In order to improve the location accuracy without changing software/hardware, a data fusion model based on geometric dilution of precision（GDOP） weighting for GSM mobile position estimation is proposed in this paper. It uses received signal difference as the basic method and GDOP weighting to deal with the mid-results. By applying the practical GSM system measurement data to verify the performance of proposed method, the results show that it can improve the location accuracy.
出处
《电波科学学报》
EI
CSCD
北大核心
2007年第3期486-490,共5页
Chinese Journal of Radio Science
关键词
几何精度因子
数据融合
GSM定位
场强差
geometric dilution of precision, data fusion, GSM position, received signal difference
