qiansuanxudianchi

估算带宽，先是计算输入信号单边带功率谱密度，然后估算出信号所占的带宽(Bandwidth estimation, first calculating the input signal is single sideband power spectral density, and then estimate the proportion of signal bandwidth)

mit的信号处理考试试卷，非常棒！可以理解老美的学习思路。(mit signal processing exam papers, great! Americans can understand the idea of learning.)

说明：  介绍了时域有限差分(FDTD) 法的基本原理, 推导了二维TM 模Yee 算法的FDFD 表达式, 并结合算例阐述了基于MA TLAB 编程的基本方法。(The basic p rincip le of FDTD w as introduced and the 22D TM mode FDTD arithmetic expression was derived. The p rogramm ing method based onMA TLAB w as illustrated w ith examp le.)

this is a matlab code of audio compression

用c语言进行地震波模拟，地震波被看做弹性波，在不均匀介质中传播的信息。(Seismic wave simulation using c language, seismic waves are seen as an elastic wave propagation in inhomogeneous information medium.)

BLDC控制系统模型matlab2015版本，pwm采用了5中导通方式，而且速度环采用了模糊PI和数字PI两种方法进行对比(BLDC PWM FUZZYPI)

支持向量机的模式识别的经典算法--最小平方支持向量机(SVM pattern recognition algorithm classic-- the smallest square SVM)

描述了PID控制规律及控制器实现及用Simulink建立PID控制器及构建系统模型与仿真方法。(Describes the PID control law and controller implementation and the establishment of a PID controller and build the system model and simulation method using Simulink.)

实现扩频里随机信号和扩频信号的产生以及用匹配滤波器实现伪码捕获和相干积分和非相干积分得MATLAB程序(Realization of random signals and generating a spread in the spread spectrum signal and the matched filter to achieve pseudo-code acquisition and integration of coherent and non-coherent integration program was MATLAB)

说明：  matlab GUI 计算器，和附件的计算器功能类似，由GUI实现(matlab GUI calculator, calculator functions and accessories similar to the GUI to achieve)