超声数值模拟

麦克风阵列的波束形成的算法，初学的可以参考一下。( Rear beamforming)

TH-PPM UWB信号发射链路仿真，其中函数cp0201_transmitter_2PPM_TH中已经依次调用了另外5个函数，直接在matlab中调用它就可以仿真出结果。(TH-PPM UWB signal transmission link simulation, which has in turn calls function cp0201_transmitter_2PPM_TH in another five function call directly in matlab it can simulate the results.)

Some linear algebra code in matlab

用matlab实现RS（255,223）的编码，叫噪声，译码，并求出纠错个数，可以正确运行。(RS (255,223) coding using matlab, called noise, decoding, and calculated the number of error corrections, you can run correctly.)

说明：  TD-SCMDA的训练序列Midamble code的仿真，并对信道进行估计。(TD-SCMDA training sequence Midamble code simulation, and channel estimation.)

介绍了 Cohen类双线性时频分布并针对交叉干扰项影响无法完全消除的问题进行了重排时频变换以提取及分辨 含有白噪声和窄带周期干扰的局部放电信号。处理仿真和现场检测到的局部放电超声信号时根据白噪声和窄带 周期干扰信号在时域上的平稳性特性发现重排 Cohen类时频变换方法不仅可以很好地将局放信号和背景噪声以 及窄带周期干扰信号分辨开来,而且大大减弱并抑制了交叉干扰项的影响,保持了更高的时频分辨率和时频聚集 性,从而验证了重排 Cohen类时频变换方法的有效性。 (In order to express the partial discharge ( PD) information of gas insulated switchgear ( GIS) in time-frequency domain, weintroduced theCohen? s class bilinear time-frequency distribution and its reassigned time-frequency transform method to pick up and distinguish theultrasonic signals in field from the whitenoises and narrow band periodic interference signals using the acousticemission ( AE) technology. After the processing of the simulated and PD ultrasonic signals in field, and according to the stationary feature of white noises and narrow band interference signals, wedraw a conclusion that the reassigned time-frequency distribution method can not only distinguish thePD signal from back ground noises and narrow band interference signals, but also decrease and restrain the influenceof cross-items, and acquire better time )

MATLAB gui经典设计方案MATLAB gui classic design(MATLAB gui classic design MATLAB gui classic design)

这是一个画出三家函数图形的小程序，希望可以对大家学习matlab有所帮助(This is a graph of a function to draw three small programs, hoping to be helpful for them to learn matlab)

数字信号处理及其matlab实现，入门很好的一本书，可以参考，讲的很仔细。(matlab ebook)

说明：  单边带的调制与解调程序，适合初涉软件无线电者参考和学习(SSB modulation and demodulation process, suitable for software radio初涉reference and learning)