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- The Fourier transform is an integral expression for a Fourier series applied to an infinitely long signal. 傅里叶变换式是对博里叶级数的一种积分表达式。
- Study on the Fourier Transform Demodulation Theory of the Spectropolarimeter Based on Intensity Modulation[J]. 引用该论文 宋志平;洪津;乔延利;裘桢炜;叶松;陈立刚;汪元钧.
- This includes Fourier series, the Fourier transform, and Fourier analysis on (some) abelian groups. 第三部分研究有限阿贝尔群上的傅立叶分析。
- Analog dada has been employed to compare the smoothing effects of the Fourier transform smoothing and the Least square multinomial smoothing. 用模拟数据对傅立叶变换平滑的效果与最小二乘多项式平滑效果作了比较。
- The Fourier transform characteristics of off-axis hololens was discussed, which was made by using a dot light source and an inclined parallel light. 摘要利用一点光源和一束倾斜平行光拍摄了一种离轴全息透镜，并对其傅里叶变换特性进行了分析。
- The Fourier transform power spectrum of input object can be obtained when the input image is placed at the front or back of the hololens. 将输入图像置于这种全息透镜的前面或后面，均能得到物体的傅里叶变换功率谱。
- Introduction the Fourier series, Convolution,Laplace transform, Z-transform, Discrete time and fast Fourier transform, Adaptive filter,digital filter. 介绍傅立叶,拉式,Z转换之数学运算,同时应用于离散与计算快速傅立叶转换,而此数学运算使用时数位滤波器之应用
- The Fourier Analysis tool solves problems in linear systems and analyzes periodic data by using the Fast Fourier Transform (FFT) method to transform data. “傅立叶分析”分析工具可以解决线性系统问题,并能通过快速傅立叶变换(FFT)进行数据变换来分析周期性的数据。
- The wide angle X-ray diffraction (WAXD) and the fourier transform infrared spectrums of two different crystal types of microcrytalline celluloses were studied. 研究了两种不同晶型的微晶纤维素的傅立叶变换红外光谱及广角X-射线衍射谱。
- In this paper, without any approximation, we calculate the strict Fourier transform of Voigt function, and testify the Fourier transform of Voigt function can be finished. 本文在没有采用任何近似的条件下，对佛克脱函数的傅立叶变换进行了精确的理论计算，证明其傅立叶变换是可以严格求解的。
- The program content-based image retrieval functions, in other words how images from the multimedia database indexing or find matching images, the methodology used is the Fourier transform, wavelet technology. 详细说明:本程序实现了基于内容的图像检索功能,也就是说如何根据图像的内容从多媒体数据库中索引或发现匹配的图像,所用的方法是傅立叶变换,小波变换等技术。
- The Fresnel diffraction formula and the Fourier transforms are used to get the intensity distribution formula. 采用菲涅耳衍射公式和傅里叶变换得出了输出面上的光场的理想计算公式。
- A laboratory-scale gasoline injector deposit simulator was developed to simulate deposit formation, and the Fourier Transform Infrared (FTIR) technique was used to analyze the deposit formation mechanism under various wall temperature. 摘要建立了实验室尺度的沉积物生成仿真装置，并尝试以FTIR傅里叶转换红外线光谱法分析沉积物生成的化学机理，以探讨不同壁面温度下的喷嘴沉积物生成过程。
- This article has made a principle analysis of the Fourier transform and Gauss filtering to Landsat-MSS image pattern. Using 101 DIPS, the parameter selection and processing method of these ransform and filtering for bay have been put forward. 本文对Landsat-MSS遥感图象模式进行了傅里叶变换和高斯滤波的原理分析,提出了利用101数字图象处理系统对海湾遥感图象模式进行这种变换、滤波时参数的选择和处理方法;
- From the formula, we found that the information of the displacement and the titling of the object was included in the FRT spectrum. We apply the Fourier transform to the FRT spectrum of the object, and we can get a pattern . 根据推导的公式我们发现物体的平移信息和倾斜信息同时包含在物体的分数傅里叶谱中，只要我们采取适当的方法就可以将它们同时提取出来，我们采用了对二次曝光的物体的分数傅里叶强度叠加谱再进行一次常规傅里叶变换的方法，得到了一个周期性的条纹分布。
- For example, transmitting a “pure” impulse into the loop is equivalent to transmitting a spectrally flat signal as is typically done for S11 measurements.The two are related by the Fourier transform. 例如，给环路发射一个“纯”脉冲相当于发射一个频域的平直信号，就像S11测试仪常做的那样。
- The properties of the biorthogoanl multivariate matrix-valued wavelet packets are investigated and biorthogonality formulae are obtained by using the Fourier transform and operator theoy. 运用傅立叶变换、积分变换和算子理论，讨论了它们的性质，得到关于高维矩阵值小波包的双正交公式。
- The content of vinyl chloride copolymer in the polyethylene terephthalate scrap was analysed by using the heating method,the Fourier transform infrared spectrometry and the gravimetric method. 采用加热显色法、傅立叶红外光谱法和称量法对废聚对苯二甲酸乙二酯中的氯乙烯共聚物进行定量检测。
- In this paper, the Fourier transform of Lorentzian function is calculated, and then based on which, we analysis the principle of the upper atmospheric wind field detection based on Lorentzian profile. 本文对洛伦兹函数的傅立叶变换进行了计算。在此基础上，对洛伦兹光谱线型高层大气风场探测的原理进行了分析。
- The first one needs the Fourier counterchange. 第1种方法需要进行傅立叶变换计算;
