Elliptical Windows are utilized as a new means for Fourier filtering and correcting the amplitudes of reflections.
椭圆窗口作为一种新的手段用于含有面缺陷晶体的傅里叶滤波和衍射振幅校正。
This new method reduces the influence of time response of Fourier filtering on frequency measurement and improves the accuracy of transient frequency measurement.
新的算法有效地补偿了富氏滤波的时间响应对频率测量造成的影响，提高了算法的暂态测频精度。其程序和计算非常简单。
It is then subject to such mathematical indignities as wavelet decomposition, multi-resolution Fourier analysis, polyphase filtering and discrete cosine transformation.
接下来它还要经过一些数学处理程序，比如小波分解，多重分辨率傅立叶分析，多相过滤，离散余弦变换等。
The paper presents a method of motion curve frequency domain filtering in Omni-directional M-mode echocardiography images based on Discrete Fourier Transform (DFT).
介绍一种基于离散傅里叶变换(DFT)的全方向M型超声心动图运动曲线频域滤波技术。
Although the filtering method in frequency domain can solve the time variant filtering problem based on Fourier transform, the method may appear a false anomaly in conjunct part between Windows.
频率域滤波方法虽然可解决时变滤波问题，但这种方法是基于傅里叶变换，在窗口与窗口之间的接合部位会出现假异常。
Theoretical analysis shows that the new deblurring function is the Fourier transform of inverse filtering function.
理论分析证明，此新消模糊函数是逆滤波函数的傅里叶变换。
The effect of double Fourier transform filtering and the optimization of experimental parameters have been studied.
对双重傅里叶变换滤波效果、实验参数的优化作了研究。
This paper studies several sorts of improved Fourier algorithm in recent years, particularly analyzes the method of filtering decaying DC component.
对近年来提出的几种改进傅氏算法进行分类研究，着重分析了其滤除衰减直流分量的方法。
The Fourier coefficients have been numerically calculated for the typical objects, and by using optical filtering the objects are extracted from pictures.
对一些典型目标的傅氏系数作了数值计算，并用光学滤波把它们抽取出来。
This method does not require any Fourier-transforming lenses and masks for spatial filtering.
这种方法不需要傅里叶变换透镜以及空间滤波器图案板。
Design the signal pre-treatment model and make use of such methods as Fourier transfer and wavelet analysis, etc to perform filtering treatment for spectrum signals.
设计信号预处理模块，采用傅里叶变换、小波分析等方法，对光谱信号进行滤波处理。
From the theory of Fourier optics, the principle and the manufacture of spatial matched filtering and the processing of input signal will be discussed.
从付里叶光学理论出发，描述空间匹配滤波器的原理、制作，以及输入信号的处理。
This is mainly influenced by the filtering process in Fourier plane and the low diffraction efficiency of the encoding grating.
说明傅里叶频谱面的滤波处理及编码光栅的衍射效率对图象输出信噪比的影响。
Because of the limitation of theory, Fourier algorithm is unable to filtering the periodic component, and especially poor in restraining decaying DC component which is common in current malfunction.
由于傅氏算法原理上的局限，它不能完全滤除非周期分量，尤其对电流故障中常见的衰减直流分量的抑制能力很差。
Based on the practical atmosphere characteristic, the restoration methods are described through filtering the blurred images from the Angle of Fourier optics spectrum.
根据实际卫星遥感成像的大气云雾影响特性，和傅立叶光学空间滤波原理，从云雾频谱分析的角度讨论模糊图像的滤波恢复处理方法。
This paper presents a method that can remove streaking noise better by means of direction filtering based on two dimension Fourier transform.
利用二维傅里叶变换进行方向滤波，较好地消除了南极地区影像上的条带噪声。
This paper presents a method that can remove streaking noise better by means of direction filtering based on two dimension Fourier transform.
利用二维傅里叶变换进行方向滤波，较好地消除了南极地区影像上的条带噪声。
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