ex9_14

it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in this program multiuser CDMA system is used ,, spreading is done using HADAMARD matrix .. or WALSH code .. and BER vs SIGNAL to NOISE ratio graph is computed

RBF for Approximation in matlab with GUI

关于超声波倒车雷达测距的，对于初学matlab的同学会有帮助，基于matlab平台实现。( About ultrasonic parking radar ranging, Matlab for beginner students will help, Based on matlab platform.)

卡尔曼 滤波 去除噪声 测定俯仰角 方位角 距离 等等(kalman filter)

系统论述了滑模变结构控制的基本理论、基本方法和应用技术，并全部给出了MATLAB仿真分析。全书内容涵盖了滑模变结构控制发展综述、连续系统滑模控制、自适应鲁棒滑模控制、欠驱动系统滑模控制、反演及动态面滑模控制、基于滤波器及观测器的滑模控制、离散系统滑模控制、模糊滑模控制、神经滑模控制和机械手滑模控制等。(The basic theory, basic method and application technology of sliding mode variable structure control are discussed systematically, and all MATLAB simulation analysis is given. The book covers the development of sliding mode variable structure control, continuous system sliding mode control, adaptive robust sliding mode control, underactuated system sliding mode control, inversion and dynamic surface sliding mode control, based on the filter and observer sliding Mode control, sliding mode control of discrete systems, fuzzy sliding mode control, neural sliding mode control and manipulator sliding mode control.)

说明：  介绍MATlAB的基本用法和编程技巧，是本学好MATLAB的优秀参考书。(MATlAB introduced the basic usage and programming skills, is an excellent reference book to learn MATLAB.)

Inverter pole is simulated

GprMax的理论基础是时域有限差分(FDTD)方法。时域有限差分方法直接将Maxwell方程作差分离散，利用二阶精度的中心差分近似把Maxwell方程中的微分算符直接转换为差分形式，在空间和时间上对电场和磁场交替间隔取样，使计算过程完全模拟电磁波逐步传播以及与目标物体相互作用的过程。(GprMax is based on the theory of the finite difference time domain (FDTD) method. The finite difference time domain method directly will Maxwell equation of discrete difference, using second order precision of the central difference in the equations are Maxwell approximate differential operator directly convert difference forms, in the space and time of electric field and magnetic field on alternate sampling interval, making the calculation process simulation electromagnetic wave propagation and completely step by step and target object interaction process. )

kalman 滤波程序，信号处理方面的，希望对大家有用(kalman filtering procedures, signal processing, in the hope that useful to everybody)

channel model for multibath signal