duffing

信道估计，信道模型建模，无线信号通道传输。(Channel estimation , channel modeling , wireless signal transmission channel .)

Genetic annealing evolutionary algorithm

说明：  关于圆盘耦合摆的研究，将介绍单圆盘耦合发电机模型和双圆盘耦合发电机模型的非线性方程组。通过对方程组的分析和MATLAB模拟计算，指出前者电流有稳定的周期解，后者在两圆盘角速度不同时可能进入混沌态，并且通过数值计算其Lyapunov指数（其中一个，出现了正值）来证明其混沌态(Research on the disk coupled pendulums, will introduce the model of a single disc and double disc coupling generator generator model coupled nonlinear equations. Equations through the analysis and MATLAB simulation, that the former current of a stable periodic solution, which is not the same in the two-disc angular velocity may enter the chaotic state, and by numerical calculation of its Lyapunov index (one of which, there have been positive) to prove the chaotic state)

说明：  介绍了目前世界上主要的深海ROV及其作业系统配置情况，以便为ROV作业系统的总体设计提供 相关参考．然后分别针对水下机械手的研制思路和水下作业工具的研究状况及难点等进行了分析与评述，给出了 相关建议．(Introduced the world' s major deepwater ROV and its operating system configuration to provide a reference for the overall design of ROV operating system. Then separately for the underwater robot underwater tool developed ideas and research situation and the difficulties are analyzed and reviewed, gives the relevant recommendations.)

first-order Engquist-Majda ABC in an FDTD program for 2D-TMz Wave.

美国76‘标准大气层模型，包括压力，音速、大气密度等特征(United States 76 standard atmospheric model, including the pressure, the speed of sound, density and other characteristics of the atmosphere)

学习matlab的同学赶紧下啊，非常有用的。 特别是学编程的同学。(very cool optimal course for all.)

FRAME地固系和惯性系坐标转换（极移、岁差、章动、参考历元）(FRAME orbit transfer)

基于Matlab软件中的优化算法和优化工具，针对风力机翼型通用型线集成表达式建立了优化数学模型。以风力机翼型的最大升阻比为优化设计目标函数，翼型形状控制方程的系数为设计变量，翼型的厚度和弯度为约束条件，设 计得到了相对厚度为18％的风力机翼型，并对其性能进行了计算分析。研究结果拓宽了风力机叶片翼型的设计思路和设计方法。(Based the Matlab software optimization algorithm and optimization tools for the integrated expression of the general profile of the wind turbine airfoil optimization model. Wind turbine airfoil maximum lift-drag ratio for the optimal design objective function coefficients of the equation of the airfoil shape control as design variables, airfoil thickness and curvature constraints, the design has been the relative thickness of 18 of wind turbine airfoil , and its performance is calculated and analyzed. The findings broaden the wind turbine blade airfoil design ideas and design methods.)

matlab经典时频分析工具箱，短时傅立叶变换（STFT），维格纳分布（WVD）,伪维格纳分布（PWVD）等时频分析方法(Toolbox short-time Fourier transform (STFT) Wigner distribution (WVD) pseudo-Wigner distribution (PWVD) frequency analysis method matlab classic time-frequency analysis)