提出了一种CCD阵列相机几何标定的多级处理方法。 根据几何成像原理，该方法把相机内外部参数分开求解；

This paper presents a multiple stages calibration method of CCD array camera, which separate the interior parameters and exterior parameters based on the principle of geometric projection.

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本文着重讨论了在任意几何中心对称阵列条件下的最大似然方向估计函数的性质及其在信源真实方向上的微分特性。

The property and the differential characteristic of maximum likelihood direction-of-arrival estimation (MLE)function for every variety of centrosymmetric array are investigated in the paper.

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结果表明，不同子阵列的特性差异较大，尤其是长子阵列，并用各子阵列的二维几何因子解释了其产生的原因。

The results show that different subarray has different characteristics, especially the longest one, and can be explained by two dimension geometrical factor.

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