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- The Fourier series of an odd function contains no cosine terms. 奇函数的傅里叶三角级数只有正弦项;
- 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。
- As an example of the technique, let's compute the Fourier series which corresponds to a square wave. 作为这种方法的一个例子,让我们计算一个方波的傅里叶级数。
- 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。
- The authors investigate the Fourier series of Weyl almost periodic functions by the new definition and prove the Parseval's equality. 通过新形式的定义研究范尔概周期函数的傅立叶级数和帕塞瓦尔等式。
- 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
- This paper analyzes the spectral characteristic of the synthesized waveform by use of the Fourier Series,and discusses the spurious spectrum of the phase truncation errors. 本文用傅里叶级数的方法分析了合成波形的频谱特性,并对由于相位截断引起的杂散谱作了讨论。
- By using the Fourier series expansion, approximate analytical propagation equations of laser beams through a paraxial optical ABCD system with different apertures are derived. 用傅立叶级数展开法研究光束通过有光阑限制的近轴ABCD光学系统的传输特性,导出了光阑透射率函数不同时的传输公式。
- Sheil--Small[1] discussed the Fourier series of a step function while thisthesis implements a detailed discussion and illustration on the properties of the step func-tions concerned in [1]. Sheil-Small [1]讨论了阶梯函数的Fourier级数。 本文对[1]中所涉及到一些阶梯函数的性质进行了详细讨论,并给出了详细证明。
- Abstract: By using the Fourier series expansion, approximate analytical propagation equations of laser beams through a paraxial optical ABCD system with different apertures are derived. 摘 要: 用傅立叶级数展开法研究光束通过有光阑限制的近轴ABCD光学系统的传输特性,导出了光阑透射率函数不同时的传输公式。
- The first one needs the Fourier counterchange. 第1种方法需要进行傅立叶变换计算;
- Study of Propagation Properties of Apertured Super-Gaussian Be am by Using the Fourier Series Expansion 用傅立叶级数展开法研究受光阑限制的超高斯光束的传输特性
- Study on beam propagation characteristics by means of the Fourier series expansion 用傅里叶级数展开法研究光束的传输特性
- The finite summation of real Fourier series approximation of a time pusle. 时间脉冲的实部傅立叶级数接近的有限和。
- the Fourier series 付立叶级数
- If the floor were infinite in extent, the mathematical distribution of reflected light could be regarded in terms of a two-dimensional Fourier series. 如果地板的广度是无限的,那么可以用一个二维傅里叶级数来表示反射光的数学分布。
- We will not go into detail about Fourier series, but will simply look at one example. 我们将不涉及付里叶级数的细节,而将只考察一个例子。
- It analyses the content of a sound and derives the Fourier spectrum. 该曲线分析了声音的构成并推出傅里叶频谱。
- Aapproximation of Fourier inverse integral using Fourier transform approximation for amplitude of harmonics in a finite Fourier series summation. 富氏级数中之谐波成份以富氏转换近似并以有限级数和近似富氏逆转换。
- The wind whirled the dead leaves about. 风吹得枯叶在四处回旋。