Second-order-system-identification

利用matlab进行数据拟合，有现成代码和案例数据。(Use of matlab for data fitting, have a ready-made code and case data. )

this method is called the maximum likelihood estimation method .which is used to find out the parameters of johnson distribution .

total for 16 bus system load flow

MATLAB入门教程，十分适合初学MATLAB者学习使用，内容很详细。(MATLAB Tutorial, very suitable for beginners who learn to use MATLAB, the content is very detailed.)

伪wigner分布，强大好用。修改输入和输出就能很快地使用。(Pseudo wigner distribution, a powerful easy to use. Modify the input and output can be quickly used.)

对4个发射天线，2个分别有2个接收天线的多用户MIMO系统进行BD预编码的仿真，观察其误码率性能。(Four transmit antennas, 2 respectively, the two receiving antennas, multi-user MIMO system BD precoding simulation, to observe the bit error rate performance.)

computes the gravitational acceleration vector at a specified ％ ECF location using the JGM2 gravitational ellipsoid only. ％ Higher-order gravity terms (the "gravity anomaly") are ％ ingnored. Only the pure ellipsoid is used. (computes the gravitational acceleration vector at a specified ECF location using the JGM2 gravitational ellipsoid only. Higher-order gravity terms (the gravity anomaly ) are ingnored. Only the pure ellipsoid is used.)

说明：  水声原理，超级经典水声学教材，学习必看，水声学基本理论(Acoustic principles, super classic acoustics materials, learning must see, the basic theory of acoustics)

2D-DCT 压缩图像后，通过QPSK,AWGN信道编码传输后，IDCT解压缩回原始图像，适用于任何图像(Using DCT to compress the orginal image, I use zigzag program, quantization, dct compression, then change the vector to bineary bit to pass through the QPSK channel. And from the binary array, I use IDCT to reconstructe the orignial image. working perfectly.)

Matlab在图像处理中的应用源代码，用于对图像像素的处理。(Matlab in Image Processing source code for the handling of the image pixels.)