冲击噪声背景下的近场源二维参数估计方法  

A method for two dimensional parameters estimation of near-field sources in impulsive noise environments

作　　者：王波[1] 王树勋[1] 

机构地区：[1]吉林大学通信工程学院,吉林长春130025

出　　处：《电路与系统学报》2005年第5期5-9,共5页Journal of Circuits and Systems

摘　　要：本文针对背景噪声为冲击噪声的情况,提出了一种新的近场源二维参数估计方法。本方法利用协变异(或协变异系数)构造矩阵,并通过求根的方法估计近场源的方向角和距离参数。该算法可以抑制冲击噪声对估计性能的影响,同时具有无需谱峰搜索的优点。仿真实验证明了该算法的有效性。A new method for two-dimensional parameter estimations of near-field sources in the presence of impulsive noise is presented in this paper. The algorithm constructs matrixes by using covariation or covariation coefficient and estimates bearing and range of near-field sources by rooting method. It can restrain impulsive noise＇s influence on estimation performance. Furthermore, it has the merit of no needing spectral peak searching. Its effectiveness are approved by computer simulations.

关 键 词：近场源定位 方向角估计 距离估计 冲击噪声 协变异 

分 类 号：TN911.72[电子电信—通信与信息系统]