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A TDOA Localization Algorithm for CDMA Mobile Networks
Author(s): 
Pages: 216-219
Year: Issue:  4
Journal: Journal of Liaoning Institute of Technology(Natural Science Edition)

Keyword:  CDMA网络TDOA定位非视距误差加权最小二乘法;
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.
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