基于信号的多谱勒特性的盲自适应波达方向估计法

A Blind Adaptive Method for Estimation of DOA Based on Signal Doppler Identity

提出信号波达方向 (DirectionofArrive)估计 ,在未知阵列流形 (Arraysmanifold)响应条件和未知背景噪声环境下 ,利用信号的多谱勒特性实现信号的波达方向的盲自适应估计 ,即自适应调整波束使波束函数与单位多谱勒复指数函数在均方误差条件下相差最小 .理论分析表明 ,该方法能很好地逼近阵列流形条件下的波达方向估计精度 ,能应用于复杂噪声环境 ,以及在一定程度上减小信号相消现象 .此外 ,该方法还具有很强的鲁棒性 .

In this paper, we give out an algorithm, which is a blind adaptive method using signal Doppler identity to estimate direction of arrays and estimate arrays manifold response and unknown noise background. This is a good fit to estimation of DOA on known arrays manifold, and is also used in complex noise background. Importantly, this method decreases the eruption of signal to some degree and has very strong ROBUST. Simulation testifies the analysis.