Direction of arrival estimation by eigenstructure methods with unknown sensor gain and phase
Direction of arrival estimation by eigenstructure methods with unknown sensor gain and phase
复制标题
DOI：
10.1109/icassp.1985.1168341
复制
发表时间：
1985-03
期刊：
影响因子：
--
通讯作者：
A. Paulraj;T. Kailath
中科院分区：
文献类型：
--
作者：
A. Paulraj;T. Kailath
通过特征结构方法估计到达方向需要了解阵列协方差矩阵以及阵列在几何形状、传感器增益和相位等方面的精确表征。实际传感器增益和相位经常会受到其假设标称值的干扰。如果本征结构方法应用了不正确的传感器参数，则该方法基本上会失败，或者充其量只能得到较差的结果。我们提出了一种新方法，它使用观察到的协方差矩阵中的信息来纠正这些影响。该方法显着提高了性能，计算机模拟结果说明了这一事实。
Direction of arrival estimation by eigenstructure methods requires knowledge of the array covariance matrix and an exact characterization of the array in terms of geometry, sensor gain and phase, etc. It often happens that the actual sensor gain and phase are perturbed from their assumed nominal values. If eigenstructure methods are applied with incorrect sensor parameters, the method essentially breaks down or at best gives poor results. We propose a new approach which uses information in the observed covariance matrix to correct for these effects. This method yields substantially improved performance, a fact illustrated by the results of computer simulations.