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文中首先介绍了阵列信号模型，分析了空时二维谱估计的原理。
The model of array signal is described first, and then the principle of 2-D spatial-temporal spectrum estimation is analyzed.
本文论述白色噪声淹没下有限个二维正弦信号的谱估计问题。
This paper is concerned with spectral estimation of a finite number of twodimensional sinusoids embedded in white noise.
对四阶累量混合波达方向矩阵进行特征分解，可实现有色高斯噪声背景中空域信号二维空间谱估计。
We can estimate two dimensional spatial spectra of sources in colour Guassian noises by eigen decomposing the matrix.
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