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主要用于实现基于TOA/AOA/RSS/QRSS的二维定位算法，用matlab程序实现，内附有注释(Mainly used to implement based on TOA/AOA/RSS/QRSS two-dimensional positioning algorithm, using matlab program, enclosing a Comment)

Example of wavelet function Mexican hat, haar,

天线工程文档，可以帮助大家学习天线的相关知识，并进行一些简单的仿真。(PDFs can help you to learn something about the aperture.)

DIT FFT of sequence and comparison with fft function

DCT and Image Compression In the JPEG image compression algorithm, the input image is divided into 8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each block. The DCT coefficients are then quantized, coded, and transmitted. The JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients, computes the inverse two-dimensional DCT of each block, and then puts the blocks back together into a single image. For typical images, many of the DCT coefficients have values close to zero these coefficients can be discarded without seriously affecting the quality of the reconstructed image. The example code below computes the two-dimensional DCT of 8-by-8 blocks in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients in each block, and then reconstructs the image using the two-dimensional inverse DCT of each block. The transform matrix computation method is used.

详细讲解matlab内的工具箱的使用与编程技巧，适合初学者。(Explained in detail within the matlab toolbox for use and programming skills, suitable for beginners.)

说明：  信号调幅，对于输入的正弦信号进行模拟幅度调制、传输、解调(Signal amplitude, the input analog signal is a sinusoidal amplitude modulation, transmission, demodulates)

通过傅里叶变换的方法，对两个单频信号的相位差进行计算，信号相关性计算(Fourier transform method, the phase difference between two single-frequency signal is calculated)

该模型是基于虚拟磁链的空间矢量控制，作相关研究的人可以看一下(The model is based on virtual flux space vector control, as related research people can look at)

光伏电池数学模型以及在标准条件下光伏电池的输出P-U，I-U曲线(Mathematical models of photovoltaic cells and photovoltaic cells under standard conditions of the output PU, IU curve)