TestSurfaceIndex

denoising of image using matlab

求解加噪信号的范数熵，本程序是选取单载频信号求解其范数熵(Solving the norm of the signal plus noise entropy, the procedure is to select a single carrier frequency signal solving its norm entropy)

运行结果三张图片直观看出相干积累前后信号图谱对比，简单直观使读者能明白相干积累功能用途(Three images visually see the results before and after the coherent accumulation patterns contrast signal, simple and intuitive so that readers can understand the functional use of coherent accumulation)

This script illustrates the fading in gmsk under nakagami distribution.A reference paper is also included.

本文建立了独立悬架汽车整车七自由度动力学模型，推导了振动微分方程，运用数值仿真的手段研究了汽车悬架阻尼系数、刚度等设计参数对汽车振动特性的影响规律。结果表明，在共振区域附近，相对较大的刚度，会导致汽车的舒适性下降，但在共振区以外的高频区，刚度对汽车振动幅值的影响并不大；后桥悬挂阻尼对汽车振动幅值的影响较前桥强烈，适当增大后桥悬挂的阻尼有利于振动幅值的降低(This paper established an independent suspension vehicle dynamic model of seven degree of freedom, the vibration differential equation is derived, using the numerical simulation method of vehicle suspension damping coefficient, influence of design parameters on vehicle vibration characteristics of stiffness. The results show that in the resonance region, a relatively large stiffness, will lead to the comfort of the car down, but in the resonance region outside the high frequency region, the effect of stiffness of the vehicle vibration amplitude is small; the effect of damping on automobile suspension vibration amplitude is strongly increasing the rear axle axle, suspension damping to reduce the vibration amplitude)

使用一般PI模型拟合非线性曲线，最小二乘法参数辨识，逆模型前馈(The general PI model is used to fit the nonlinear curve, the least square parameter identification, and the inverse model feedforward.)

利用yamlip+gurobi求解各个火电机组最优出力的问题(Use yamlip+ gurou to determine the optimal output of each thermal power unit)

使用MATLAB来编写fft快速算法的具体实现方法的源码。(Use MATLAB to write fft Fast Algorithm for the concrete implementation method of the source code.)

希尔伯特黄变换（HHT）变换，在众多领域都有应用，适合初学者学习(Hilbert Huang Transform (HHT) transformation has applications in many fields, suitable for beginners to learn)

使用matlab通过微弯波导和直波导耦合设计一个3db耦合器(Through the use of matlab Microbend waveguide and the straight waveguide coupled design a 3db coupler)