walker

摘 要 采用有限元和球函数相结合的方法,建立水下复杂壳体)))两端带半球壳的加肋弹性圆柱壳的振动!耦 合振动和声辐射方程,运用方程分析法,导出水下复杂壳体的振动!耦合振动和声辐射的相似关系,根据建立的相似关系 实现对壳体的振动响应和声辐射的预报"采用大型有限元软件对具有相似关系的模型和原型的振动响应和声 场进行分析,算例表明,方法切实可行并且为预报水下大型复杂结构体的振动响应和耦合声场提供了一种简洁!实用的 研究方法"(The finite element and ball method of combining functions, the establishment of underwater complex shell))) ends with a hemispherical shell stiffened elastic cylindrical shell vibration! Coupling )

相移光栅的反射谱和折射谱仿真，光纤长度、调制强度、相移等参数均可调(Phase shift grating spectral reflection and refraction spectrum simulation, fiber length, intensity modulation, and other parameters can be adjusted for a phase shift)

matlab GUI设计一个多功能数字信号处理器，实现信号产生，观察频响，以及滤波器设计(matlab GUI design a multi-function digital signal processor for generating a signal, the frequency response was observed, and the filter design)

研究表明超高斯分布更加贴近语音信号的实际分布，然而语音信号很难用单一的概率密度 函数准确描述，针对这一情况，提出了一种用超高斯混合模型对语音信号幅度谱建模的新方法，并推导了 基于此模型的幅度谱最小均方误差估的估计式。仿真结果表明：与传统的短时谱估计算法相比，该算法不 仅能够进一步提高增强语音的信噪比，而且可以有效减小增强语音的失真度，提高增强语音的主观感知 质量。 (Recent research indicates that the speech spectral amplitude distributions could be fairly described with super-Gaussian probability density function. However, the complexity of speech signal determines that the distribution statistics ofspeech signal could not be well described by single simple function. Thus a super-Gaussian mixture model for speech spectral amplitude is proposed, and with this model, a minimum mean-square error (MMSE) estimator for speech signals spectral amplitude is derived. The simulation results show that this algorithm based on Gaussian and super-Gaussian speech model could achieve better noise suppression and lower speech distortion as compared with the conventional short-time spectral amplitude estimation algorithm. )

Hammerstein_Wiener模型最小二乘向量机辨识及其应用 EI文章(Hammerstein_Wiener model identification and application of least squares vector machines EI article)

OFDM for Wireless Communications Systems

说明：  求解系数矩阵由16阶Hilbert方程组构成的线性方程组， 3、共轭梯度法；(Solving the linear equations consisting of 16-order Hilbert equations of coefficient matrix. 3. Conjugate gradient method;)

平面拟合程序，可进行多点的平面拟合~简便易懂(Plane fitting procedure, the plane can be fitted more easily understood ~)

this code calculate the euclidian distance. h = waitbar(0, Distance Computation ) switch nargin case 1

说明：  压缩感知Basis Pursuit基追踪算法，稀疏度和正确率的关系以及采样率和正确率的关系(Basis Pursuit based on compressed sensing and tracking relationships between sampling rate and accuracy of the algorithm, and the correct rate of sparsity)