Spatial spectrum estimation technique is a new direction-of-arrival estimation technique based on multielement array and modern digital signal processing theory.

空间谱估计测向是一种以多元天线阵结合现代数字信号处理为基础的新型测向技术。

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Spatial filter is an important preprocessing method of digital image processing.

空域滤波是数字图象处理中重要的预处理方法之一。

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Based on the above analysis, the article gives coal analysis system's hardware structure and software algorithm, and this system is based on spatial digital image processing.

鉴于以上分析，文章给出了基于空间域数字图像处理的煤岩分析系统的硬件构成，软件介绍。

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