aintroduction

这是一个matlab周期图法与BT算法的仿真代码(This is the periodogram and BT algorithms in a Matlab simulation code)

运用FDTD算法计算了喇叭天线的近场分布，有一定的参考价值。(Use the FDTD algorithm to calculate the the horn antenna near-field distribution, there is a certain reference value.)

交错并联型双反激逆变器的saber仿真文件，自己做的一个项目的前期方案论证、原理验证的文件，做电力电子的朋友都知道它的好。(Interleaved dual flyback inverter saber simulation files, pre-program yourself to do a demonstration project, the principle of verification of documents, power electronics make friends all know it s good.)

This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. (This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. )

to make the data at the same length

遍历文件夹下的文件，并计算类内距离和类间距离。(Traverse folder under the file, and calculate the distance between the within-class distance and class.)

crc编译码的过程，程序比较简单易学，已经过验证。(CRC encoding and decoding)

说明：  后小波分析，contourlet变换，内有各种应用函数，及演示(After the wavelet analysis, contourlet transformation, there are a variety of applications functions, and presentation)

随机子空间的matlab主程序代码，可以实现高精度的信号辨识。按照《基于随机子空间和最小二乘法的介质损耗角测量方法》、常军博士论文《随机子空间方法在桥梁模态参数辨识中的应用研究》编写。(Stochastic subspace matlab main code, you can achieve high-precision recognition. Accordance with the " stochastic subspace-based least-squares method and dielectric loss angle measurement methods" , regular army doctoral thesis " stochastic subspace identification of modal parameters of the bridge in the applied research" to write.)

一个实现卡尔曼滤波器的程序集。卡尔曼滤波是一种常用的数据滤波方法，可用于电力系统故障信号采集等方面。(An implementation of the Kalman filter assembly. Kalman filtering is a commonly used method of data that can be used aspects of power system fault signal acquisition.)