2006summerschool

将idl的程序用于matlab中，使程序具有通用性(idl to matlab)

这是模拟退火算法的一些实例，是关于模拟退火算法的实现，我觉得挺好看懂的(This is some examples of simulated annealing, is on the simulated annealing algorithm, I feel very good to read it)

包含非线性卫星转发器的FDM系统的仿真 仿真一个从卫星到区域数据中心的下行链路（由一组6个载波构成），评估热噪声，交调（IM）失真、由滤波器造成的码间干扰（ISI）以及邻频干扰对下行链路性能的影响。 (Contains the non-linear satellite transponder FDM system simulation simulation of a regional data centers from the satellite to the downlink (from a group of six carrier composition) to assess the thermal noise, intermodulation (IM) distortion, caused by the filter inter-symbol interference (ISI) and adjacent channel interference on the downlink performance.)

动态潮流分析程序（四机两区域系统）有各种情况下如三相短路、两相接地短路等情况下系统的动态潮流分析(Dynamic trend analysis program (four machine two area system) has a variety of circumstances, such as three-phase short circuit, two-phase ground short circuit case, the dynamic trend analysis)

用欧拉角表示的飞行器姿态运动学方程在大角度时会出现奇异现象,而采用四元数来 表示,则可以避免这个问题。因此,飞行器运动学方程都采用四元数来表示。而飞行器的控 制规律都采用欧拉角来表示,且欧拉角表示姿态角比起四元数更加形象,更易于被人理解, 所以,在飞行器控制系统仿真设计的时候,需要四元数与欧拉角之间的转换。给定1 个欧拉 角,对应1 个四元数,因而欧拉角到四元数之间这种一一对应的关系使得欧拉角到四元数的 转换比较容易。但是,1 个四元数通常有1 个或者2 个欧拉角与之对应,它们之间不是一一 的对应关系,因而,四元数到欧拉角之间的转换比较困难。一般文献或者参考资料上的转换 仅仅适于欧拉角在- 90°～ + 90°之间的情况[1 ] 。文献[ 2 ,3 ]中给出了滚动轴在- 90°～ + 90° 之间变化,俯仰轴、偏航轴在- 180°～ + 180°之间变化的四元数到欧拉角的转换公式。本文 提出了滚动、俯仰和偏航3 个轴的欧拉角均在- 180°～ + 180°之间取值的全角度转换算法, 经过数字仿真证实,这个算法是完全正确的、而且很实用。(Euler angles of the spacecraft attitude kinematics equation at large angles appear strange phenomenon, and quaternion , You can avoid this problem. Therefore, the aircraft kinematic equations using quaternion to represent. Aircraft control The system of law Euler angles and Euler angles attitude angle than the the quaternion more image easier to be understood, Therefore, in the design of aircraft control system simulation, you need to convert between quaternions and Euler angles. Given an Euler Angle corresponding to a quaternion, which this one-to-one relationship between the Euler angles to quaternion makes Euler angles to quaternion Conversion is relatively easy. However, a quaternion usually have one or two corresponding Euler angles between them than eleven The correspondence relationship, therefore, the quaternion to convert between the Euler angle is relatively difficult. General literature or reference conversion Only suitable for Euler angles- 90 ° to+ 90 ° betwe)

Pulse shaping using raise cosine filter for QPSK

matlab code for Command-line peak fitting function for time-series signals

通过使用matlab优化工具箱中的函数fmincon解决有约束的非线性优化问题，有详细的代码过程。(By using the matlab optimization toolbox function fmincon to solve constrained nonlinear optimization problem, has detailed the process code.)

用matlab实现的均值滤波函数，可以有3*3,5*5等多种窗口可选(Using matlab to achieve the mean filter function, can have 3* 3,5* 5 and many other window options)

this is a code for matlab