GPSsignal-modeling-and-simulation

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. )

hatch MATLAB and POWER POINT

用Remez算法设计一个低通滤波器,分别满足性能参数: 滤波器1 滤波器2 滤波器3 采样率Fs: 20kHz 20kHz 20kHz 通带: 0-3 0-4kHz 0-5kHz 带内波纹: 0.1dB 0.1dB 0.1dB 带内衰减: 60dB 60dB 60dB (With the Remez algorithm to design a low pass filter, respectively, to meet the performance parameters: filter 1 filter 2 filter 3 of the sampling rate Fs: 20kHz 20kHz 20kHz pass band: 0-3 0-4kHz 0-5kHz in-band ripple : 0.1dB 0.1dB 0.1dB in-band attenuation: 60dB 60dB 60dB)

用MATLAB编写的另一个用于图像灰度处理的小程序，很经典的一个图像灰度处理小程序。(Prepared using MATLAB image processing and another for a small procedure, it is the classic image of a small program to deal with.)

Algorithms in C, Part 5 (Graph Algorithms) code

bpsk加噪和不加噪情况下最佳相干解调的编解码。(The BPSK adding noise and without noise coherent demodulation codec.)

车牌定位Matlab程序，可以实现汽车车牌的定位。(License plate location Matlab program, you can achieve the positioning of vehicle license plates.)

Note: const char* PATH means the Path inclusive the file name Note: HKEY hKey means the property, such as HKEY_LOCAL_MACHINE or HKEY_USERS

对流扩散方程的六点迎风格式matlab编程(Six upwind scheme convection-diffusion equation)

Maximum likelihood estimation for rayleigh function