查询词典 invariance theorem

Using Matlab write a convolution theorem certification procedures, the immediate domain convolution corresponds to the frequency domain product.

用matlab写的一个验证卷积定理的程序，即时域的卷积对应着频域的乘积。

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。

Digital holography ; Microscopic digital holography ; Wave front reconstruction ; Fresnel approximation ; Convolution method ; Angular spectrum theorem

数字全息；显微数字全息；波前重建；菲涅耳近似；卷积法；角谱方法

According to induced response method, the expression in frequency domain of pressure response at the end of pipeline is derived using impulse response method and convolution theorem. The expression indicates that that transfer function is only related to the characteristics of pipeline system and the Fourier transform of flow variable only depends on the operating characteristics, and the pressure response in frequency domain is linear with the Fourier transform of flow variable.

基于激励响应法，应用脉冲响应方法和卷积定理得出了管道末端压力响应在频域中的表达式，此式表明：传递函数只与系统的特性相关，流量变量的傅立叶变换只与操作特性相关，且压力频域响应与流量变量的傅立叶变换为线形关系，根据此式在理论上能够得到管道泄漏点的重要信息。

This paper proposes the generalized design method for the perfect reconstruction filter banks in the FRFD based on the FRFD analysis of sampling rate conversion and the fractional convolution theorem, which are the basis of the applications of filter bank theory in the FRFD.

本文从分数阶傅里叶域多抽样率信号处理基本理论和分数阶卷积定理出发，推导出了分数阶傅里叶域准确重建滤波器组的一般化设计方法，为分数阶傅里叶域滤波器组理论在实际工程中的推广应用奠定了理论基础。

Aimed to the differential equation in form of convolution and the functional presented by M. E. Gurtin, the matrix operator which includes the differential equation and the boundary condition is proved self-adjoint, furthermore a general variational principles in form of convolution and the preparation theorem are given and proved.

针对M.E.Gurtin提出的含卷积运算的抛物型偏微分方程及其对应的泛函，运用泛函势算子理论，从理论上证明了含卷积运算的抛物型偏微分方程及其边界条件所对应的矩阵算子有势，进而给出并证明了具有普适意义的含卷积运算的变分定理及预备定理。

This paper describes various methods of analog modulation based on Convolution Theorem and Hilbert Transform unitedly to simplify the theoretical analysis in the" communication principle" course.

本文基于信号处理概念中的卷积定理和希尔伯特变换统一地描述各种模拟调制方式(括DSB，SSB，AM，FM)原理，旨在简化"通信基础"课程中关于模拟调制理论的分析。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。