查询词典 convolution

We propose a new method-image displacement elimination method, it overcome shortcomings of FDDI and can solve convolution equation set in space domain quickly.

我们利用Vandermonde矩阵求逆的特性和我们提出的空间域图像移位消去法，可以用较少的计算量求解出卷积方程组，从而快速重建断层像。

In this paper, taking the downward continuation of potential field as an inverse problem of upward continuation, we obtain a convolution type linear integral equation for downward continuation. Making use of the orthogonal symmetry characteristic of Fourier transform matrix, and combining the principles of singular value decomposition of matrix and generalized inverse, we proposed a stable generalized inverse method for downward continuation of potential field, called wavenumber domain generalized inverse algorithm, which doesn't need the computation for inverse matrix. It resolves the instability of potential field downward continuation of large depth.

本文通过把位场向下延拓视为向上延拓的反问题，得到向下延拓的褶积型线性积分方程，再利用Fourier变换矩阵的正交对称特性，并结合矩阵的奇异值分解和广义逆原理，提出了一种稳定的不需要进行求逆运算的位场向下延拓广义逆方法——波数域广义逆算法，解决了位场大深度向下延拓的不稳定性问题。

By decomposing the problem system into an extended saturated soil system and a virtual pile system, through the strain compatibility condition between the extended saturated soil system and the virtual system at an arbitrary depth z along the pile, and combined the Laplace transform and its convolution, a Fredholm intergral equation of the second kind of the single pile in saturated layered transversely isotropic soils is established. The axial force and diaplacement of the pile are obtained by solving the Fredholm intergral equation.

将求解体系看作是饱和土体和虚拟桩的叠加，利用沿桩身任意一点z处饱和地基与虚拟桩的应变协调，并结合Laplace变换及其卷积性质，建立了饱和成层横观各向同性地基中竖向受荷单桩问题的第二类Fredhlom积分方程，对该积分方程进行求解可得桩的真实轴力、位移。

Signal and system is the basic theory of convolution theorem.

摘要信号与系统是卷积定理的基本理论。

Chapter 2 introduces the basic theory of image enhancement, convolution theorem and Fourier transform.

第二章先介绍了图像增强的基本理论，卷积定理以及傅里叶变换。

From the most basic signal analysis, digital signal processing, and the Fourier transform convolution theorem was derived and that, and with MATLAB simulation.

本文从最基本的信号系统分析、数字信号处理过程开始，对傅里叶变换以及卷积定理进行了推导和证明，并且用MATLAB进行仿真。

This article from the start with the basic signal analysis, the Fourier transform, convolution theorem derivation and feasibility studies, and its use of simulation software MATLAB simulation, to be more intuitive signal of the spectrum changes, simulation discrete signal The system response.

本文就从最基本的信号系统分析入手，对傅里叶变换、卷积定理进行推导和论证，并且运用仿真软件MATLAB对其进行仿真，目的是更直观的研究信号的频谱变化关系，仿真离散信号的系统响应。

According to the frequency-domain convolution theorem, we can prove the peak frequency and phase are frequency and phase of the harmonic wave signal.

根据频域卷积定理证明最大峰值点的频率和相位就是信号的实际频率和相位，依据由卷积关系得出的关于幅值的方程求出校正幅值。

A series representation for the spectrum of difference pattern is thenobtained according to the convolution theorem.

根据天线远区场对口径波谱的局部依赖性，引入有效近场的概念，提出一种面向远场计算的波谱射线方法。

By virtue of inverse Fourier transform and convolution theorem, a semi-analytical solution for the velocity response of a pile subjected to a semi-sine wave exciting torque is obtained in the time domain.

进一步根据桩土接触面上的位移、应力连续条件，求解了桩身动力平衡方程，在频域内得到了桩顶动力响应的解析解。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。