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1·In this paper, the DOA estimation is implemented by spatial frequency spectrum analysis.

本文从空间频谱分析的角度来实现这一估计。

2·The spatial frequency ratio which could reflect regional similarity among images was defined.

②定义了能够反映图像之间区域相似程度的空间频率比概念。

3·A new multi-focus image fusion method using spatial frequency (SF) and morphological operators is proposed.

本文提出了一种新型的基于空间频率和数学形态学算子的多聚焦图像融合算法。

4·In this paper, we introduce a new optical processing system utilizing reflecting spatial frequency filtering.

本文作者经过一系列的实验，研究出一种新的反射式滤波的光学处理系统。

5·These spatial frequency band errors degrade optical performances significantly and are difficult to be controlled.

这些空间频带误差的存在严重影响了系统的光学性能，且难以得到控制。

6·The filtering in spatial domain, spatial frequency domain and a system of optical formatting imagines are also analyzed.

同时也分析了空域滤波、空频域滤波、光学成像系统。

7·Method Modulation transfer function (MTF) was used to analyze the spatial frequency transfer characteristics of ct and MRI.

调制传输函数可对线性影像系统的频率传输特性进行描述。

8·In processing of array signal, Direction of Arrival (DOA) of target can be obtained by extracting spatial frequency of echo.

在阵列信号处理中，提取回波信号中的空间频率，可以得到目标的方位信息。

9·High spatial frequency terms of the turbulent spectrum are sampled and low spatial frequency terms are revised using this treatment.

该算法既可对湍流的高频谱抽样，亦可对湍流的低频谱进行修正。

10·The relationships between the spatial frequency response features and toad's behaviors, and the biological significance were discussed.

并对空间频率特性与蟾蜍行为之间的关系和生物学的意义做了初步探讨。