twodegree

这是个有关QOS组播路由的的实例代码，希望大家喜欢！(this is a )

设定房间大小，并设定T60衰减系数，该软件根据声场理论，计算室内声场多途情况，还可以生成mex64文件，供MATLAB调用(The size of the room is set and the T60 attenuation coefficient is set. The software calculates the indoor acoustic field multipath according to the sound field theory, and also generates mex64 files for MATLAB calls.)

标准SMI算法，采样矩阵求逆的算法，适合初学者(sample matrix inverse)

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四自由度的简易机器人（转载），通过输入四个关节的旋转角度，显示出实体在X、Y、Z三轴上的投影，并可计算出位置坐标(Simple robot four degrees of freedom (reprint), by entering the four joint rotation angle, showing that the entity in the X, Y, Z axis on the projection, and calculate the location coordinates)

Induction Machine modeling source Code: without using simulink, these codes can numerically model th IM.

按照人名 电话号吗的格式建立电话本，再执行时把文件名作为参数。带有语音功能。(accordance with the names of persons telephone number? Format established telephone, and implementation of the document as a parameter. With voice.)

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)

使用时域有限差分法编写的计算散射截面的简单程序(Scattering cross section is calculated using a simple program written in finite difference time domain method)

本程序是线阵的波束形成程序，可以在特定方向生成零陷，从而抑制干扰信号(This procedure is a linear array of beam forming process, you can generate zero in a specific direction, thereby suppressing the interference signal )