chuanshuxian

Numerical solving specifications For grid simulation

This code is the Ibrahim Time Domain Technique to extract modal properties of a structure

speed controller system for permanent magnet synchrounus motor by pq theory or filed orinted control

关于一个滤波器的程序，三级CIC抽取的源程序。(On a filter process, the three-tier CIC samples of the source.)

TDOAAOA定位的扩展卡尔曼滤波定位算法(Positioning TDOAAOA extended Kalman filter algorithm)

这是阵列天线中的仿真代码，可以作为卫星接收中阵列天线仿真的参考。(This is the array antenna simulation code.)

说明：  rs码的产生,超宽带系统的发射接收程序，及其性能测试(rs code generation, ultra-wideband transceiver system procedures, and performance testing)

Crout Algorithm for Power Flow

在一个移动通信系统中，发射信号是一个未调制的音频x(t)=cos(2πft)，其中f=f0+fi。设标称载波为f0=1GHz，并设fi =512Hz。假定移动用户在一个繁忙的高速公路上距离基站l公里处的地方，从开始从每小时60公里的速度开始，其速度（在0.01秒的时间间隔内测量）以1/2的概率随机的增加或减少1/10公里每小时。试仿真移动用户在这2s的时间间隔内所接收到的信号(及其频谱)。接收信号可以表示为： y(t)=a(t)Cos[2π(fo+f1)(t-△t)] 式中 △(t)=d(t)/c 且 a(t)=k/d2(t) 在上面的表达式中d(t)是在t时刻基站与移动用户的距离，c是光速，△(t)是传播延迟，而a(t)是信号在t时刻的衰减，并假设在这2s内a(t)是一个常数。利用复低通等效模型来进行仿真。(In a mobile communication system, the transmitted signal is an unmodulated audio x (t) = cos (2πft), where f = f0+ fi. Let nominal carrier of f0 = 1GHz, and set fi = 512Hz. Assume that mobile users on a busy motorway station l kilometers place, starting the beginning of 60 kilometers per hour, the speed (measured in 0.01 second interval) to increase the probability of a random 1/2 or reducing 1/10 km/h. Simulation test signal which the mobile subscriber in the 2s time intervals of the received (and its spectrum). The received signal can be expressed as: y (t) = a (t) Cos [2π (fo+ f1) (t- △ t)] Where △ (t) = d (t)/c And a (t) = k/d2 (t) In the above expression, d (t) at time t is a base station and a mobile user s distance, c is the speed of light, △ (t) is the propagation delay, and a (t) is the attenuation of the signal at time t, and assuming that 2s within a (t) is a constant. Using complex low-pass equivalent model for emulation.)

惯性导航研究中的轨迹发生器，用于模拟载体的机动运动(inertial navigation study the trajectory generator to simulate carrier mobile campaign)