phd

灰色系统程序，采用GM(1,1)思想，可在matlab中调用进行灰色系统预测等。(Grey system procedures, the use of GM (1,1) ideology, called in matlab gray system prediction.)

Matlab实现的数字调制算法源代码(ASK, OOK, BPSK, QPSK, 8PSK)适合于毕业设计、学术分析。(Matlab implementation of the digital modulation algorithm source code (ASK, OOK, BPSK, QPSK, 8PSK) for graduation, academic analysis.)

MULTIMACHINE POWER SYSTEM USING FUZZY AND POD

Fast Fourier Transform

this is used for interpolation

仿真程序：首先需要用一个随机发生器产生（0.1）内的均匀随机数，然后再将该序列映射到对应的幅度电平｛Am｝。然后将这个范围再分成4个相等的区间，这些子区间分别对应于4个信号比特的符号00，01，10，11。检测器观察到r=Am+n，并且计算r和4种可能传输的信号幅度之间的距离，它的输出Bm就是相应于最小距离的信号电平。Bm与真正的的传输信号幅度比较，差错计数器用来对检测器产生的差错计数。(Simulation program: first need to use a random generator (0.1) the uniform random number, then the sequence is mapped to the corresponding amplitude level {Am}. Then this range has been divided into four equal intervals, these sub-intervals corresponding to four signal bits of the symbol 00,01,10,11. Detector observed r = Am+ n, and calculate r and 4 possible transmission distance between the signal amplitude, its output corresponding to the minimum distance Bm is the signal level. Bm and the real rate of transmission of the signal comparison, error detection counter is used to generate the error count.)

程序相当有用，可用于数学建模中。数据是实例，程序浅显易懂。(Program is useful for mathematical modeling. Data instance, the program easy to understand.)

雷达SNR相对于检测距离的曲线，其中对应不同的雷达截面积和发射功率。(Radar SNR curve with respect to the sensing distance, which corresponds to the type of radar cross section and transmit power.)

this file is a script containing the algorithm of KNN with an exemple of application

Chroma Feature Analysis and Synthesis Chroma features are an interesting and powerful representation for music audio in which the entire spectrum is projected onto 12 bins representing the 12 distinct semitones (or chroma) of the musical octave. Since, in music, notes exactly one octave apart are perceived as particularly similar, knowing the distribution of chroma even without the absolute frequency (i.e. the original octave) can give useful musical information about the audio and may even reveal perceived musical similarity that is not apparent in the original spectra.