kuan2

说明：  数值方法和MATLAB实现与应用.zip(numerical methods and MATLAB and applications. Zip)

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet. The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.

分数阶傅里叶变换对chirp信号进行解调，同时对比匹配滤波器的解调性能(Fractional Fourier transform of the chirp signal is demodulated, and the demodulation performance comparison of the matched filter)

DFA是一种分析去趋势波动分析方法的matlab程序，被广泛用来作为理论基础。(DFA is a detrended fluctuation analysis to analyze the matlab program, is widely used as a theoretical basis.)

说明：  萤火虫算法的matlab示例代码，只适用于求极大值(极小值可转化为求极大值)(Firefly algorithm matlab sample code, only applicable to the maximum (minimum can be converted to the maximum))

MATLAB code for back propogation neural networks for more than five variable

说明：  MATLAB-数据处理-一个文件数据处理小程序(MATLAB-data processing-a small data-processing document procedures)

说明：  Viterbi编码器和译码器的MATLAB实现，适合各种编码方式，包括213，217，219等，是一种通用的程序(Viterbi encoder and decoder in MATLAB to achieve, for a variety of encoding, including the 213,217,219, etc., is a common procedure)

this is simulation de mcc

Number Plate Detection