一种基于CDMA移动网络的TDOA定位算法A TDOA Localization Algorithm for CDMA Mobile Networks
关维国;尹红艳;鲁宝春;
摘要(Abstract):
针对CDMA移动网络导频测距信号,提出了一种基于CDMA移动网络的TDOA定位算法。采用导频时延差作为定位参数,建立了TDOA定位的数学模型,给出了高斯噪声条件下的定位解算方法;针对移动信道中非视距传播时延服从指数分布的特性,采用NLOS协方差估计修正方法减小NLOS对定位精度的影响。仿真结果表明,该方法可有效削弱NLOS误差,性能优于Taylor算法及SI算法,在CDMA信道环境下具有良好的定位性能。
关键词(KeyWords): CDMA网络;TDOA定位;非视距误差;加权最小二乘法
基金项目(Foundation): 辽宁省教育厅项目(L2012218)
作者(Authors): 关维国;尹红艳;鲁宝春;
DOI: 10.15916/j.issn1674-3261.2013.04.004
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