FFT

仿真了地球杂波的情况。考虑了地球自转带来的多普勒旋转等影响。仿真结果和理论相一致。可作为星载雷达地球杂波仿真的参考(Clutter simulation in the case of the Earth. Taking into account the Earth' s rotation brought about by the impact of Doppler rotation. Simulation results and theoretical line. Can be used as space-borne radar clutter simulation of the Earth' s reference)

说明：  这些说明包括了该课程的数值部分上半年AMAT3122数学 微分方程的方法。他们不是一个完整的笔记。(MATLAB (MATrix LABoratory) is a very powerful package designed for numerical analysis, matrix calculations and visualisation (as well as many other applications). One of MATLABs strengths is that it can be used as a simple ‘calculator’ and also is easy to program more complicated tasks. Many mathematical algorithms are already built in to MATLAB and many more are easily added)

旅行商遍历50个城市，最短线路的求法问题(Traversing 50 cities TSP, the shortest route problem Method)

在matlab中实现灰度预测,对时间序列类型，单一或多变量的数据较为实用(To achieve gray prediction in matlab)

介绍了平均电流控制型 PFC Boost 变换器的结构， 分析了其工作原理。 分别采用 Power System 工具箱和考虑电感电流断续工作状态的 C-MEX 文件 S 函数建立了主电路模型，对平均电 流控制型 PFC Boost 变换器进行了仿真。仿真结果表明，与 Power System 工具箱模型相比，基于 C-MEX 文件的 S 函数仿真模型能够准确仿真电流断续工作状态，仿真速度快。设计了电路样机进 行了实验研究，仿真结果与实验结果一致，证明了该方法的正确性。利用该方法可以高效地仿真 研究系统结构和参数变化时性能变化情况，得到的平均电流控制型 PFC Boost 变换器的混沌分岔 图，为更好地理解和设计这种变换器提供了有利的工具。(The structure of average current controlled power factor correction (PFC) Boost converter is introduced, and its working principle is analyzed. The PFC Boost converter is simulated using the model established with Power System toolbox and the C-MEX file S-function model respectively. Simulation results show that the C-MEX file S-function model can simulate the all state of the converter including discontinuous conduction mode with high speed. Experimental results show the correctness of the simulation results and the proposed method. The method is suitable for simulation the performance changing with the variation of system structure or parameters. The bifurcation diagram is derived for PFC Boost converter using this method, which is very useful for better understanding and better design of the converter.)

基于 嵌 入式系 统 理 论和 容 错系 统 体系 结 构， 结 合故障 一 安 全电 路的 设计 理念， 给出 了 一 种 嵌 入式 二乘 二 取 二容 错计算 机 联锁系 统的 硬件 设计. 深 入阐 述了 系 统 硬件电 路的 设计理论依据和工 作原 理， 同 时 给出了 设计中 的 元 件选型. 通过功能 测试， 系 统设计符 合故障 一 安全的 设计原则， 理论 计 算 表明， 其可 靠 性、 安全 性 达 到 铁 路 信号系 统 要求(Based on the theory of embedded systems and fault-tolerant system architecture, combining design fail-safe circuitry, gives a socketed Take two squares two-in fault-tolerant computer interlocking system hardware design. Further expounded on system hardware circuit design theory and work Design principles for the principle, and gives the design of the component selection through functional testing, failure of a safety system designed to meet the theoretical Calculations show that the reliability, security, railway signaling system requirements to achieve)

Sample code for optimization based on Gradient base. include BFGS, Steepest Descent method, DFP method, Conjugate Gradient method ans so on...

Contourlet变换中的隐马尔科夫树模型程序 Hidden Markov Tree model of Contourlet Transform 2008年11月14日 MATLAB2 (R2006a) 这是一个Matlab实现的隐马尔科夫树模型，用于计算图像的Contourlet系数。程序同时还包括图像去噪、纹理恢复的应用模型。(Contourlet transform the hidden Markov model procedures for Hidden Markov Tree model of Contourlet Transform 2008 年 11 月 14 日 MATLAB2 (R2006a) is a Matlab implementation of the Hidden Markov Tree Model, used to calculate the image Contourlet factor. Program also includes denoising, texture recovery application model.)

老外写的小波变换的工具箱，基于MATLAB环境；压缩包内有详细的说明和相关Demo，参考价值较高。(Written by foreigners Wavelet Toolbox, MATLAB-based environment compressed packet has detailed instructions and Demo, a high reference value.)

matlab调用CTP接口的例子，实用性强(the matlab call CTP interfaces examples of practical)