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将一维Ｒｏｏｔ－ＭＵＳＩＣ推广到二维，从而得到了一种新的二维方向估计方法，它具有计算量小的优点。
The one-dimensional Root-MUSIC is generalized to two dimensions, and a new two-dimensional direction estimation method is obtained. It has the advantage of small computation.