基于空间差分技术的测向方法

Direction Finding Using Spatial Differencing Technique

本文提出了均匀线阵情况下用空间差分技术实现相干信号源的测向方法，它充分发挥相关矩阵的赫尔米特托普尼兹和赫尔米特非托普尼兹分量的作用。利用常规的超分辨测向方法实现非相干信号源的测向；利用空间差分方法实现相关和相干信号源的测向。采用本文提出的方法可以估计更多的信号源。计算机模拟验证了本文提出的方法。

Spatial differencing technique is presented for direction finding in the presence of coherent sources with a uniform linear array.This method fully utilizes the Toeplitz and non-Toeplitz parts of the correlation matrix of received signals.A common algorithm can find the directions of uncorrelated and correlated sources.The spatial differencing algorithm can obtain the directions of correlated and coherent sources. In addition ,more sources can be estimated with fewer sensors. And further the spatial differencing technique is supported by the simulations.