二维谐波分析的子空间旋转技术——二维ESPRIT

A Subspace Rotation Approach for 2D Harmonic Analysis-2D ESPRIT

本文将参数估计的旋转不变技术(ESPRIT)应用到二维正弦谱估计,并给出了完整的算法。与其它二维谱估计算法相比,二维ESPRIT不但具有优越的性能,而且需要极小的运算量,因为它完全避开了多项式搜索(包括二维和一维)。另外,做为一种分维处理技术,二维ESPRIT几乎不带来阵列有效孔径的减小。

In this paper,the ESPRIT is applied to 2D sinusoidal spectrumestimation, and an algorithm is given.Compared with other approaches for 2Dspectral estimation, 2D ESPRIT not only has a better performance, but saveslarge amount of computation by avoiding polynomial researching in both 1Dand 2D.Although a separable estimation approach, the 2D ESPRIT decreasesthe array effective aperture much less.