FFT

A simple function that takes an image and a mask as the input, perform compression and decompression on the image (color image compression if input image is color), and display the original and reconstructed images side by side. The program should also be able to compute the SNR of the reconstructed image.

说明：  这是一部很好的学习通信信号处理的书籍，很适合于初学者；文中系统的讲解了通信信号方面的知识和处理算法(This is a good book to learn communication signal processing, it is suitable for beginners paper explains the system of knowledge and communication signal processing algorithms)

岩体稳定性计算，裂隙岩体节理网络网格划分，用于有限元计算。应用于边坡，大坝等岩体结构工程！(Rock stability calculation, fractured rock joint network mesh for finite element calculations. Applied to the slope, dams and other rock structure works!)

说明：  ISAR 成像与运动补偿,包括成像结果分析(ISAR imaging and motion compensation, including analysis of imaging results)

说明：  IQ调制基本原理！！！！！！！！ (IQ modulation principle! ! ! ! ! ! ! !)

MLSD algorithm at given channel values

OFDM 通信系统仿真，包括 BPSK QAM QPSK 调制程序，和解调程序，(OFDM communication system simulation, for BPSK QAM QPSK modulation, and demodulation process,)

ITS matlab code running explanation of motor and clearly gave the characteristics

利用modelica语言编写的滤波器的模型，实现滤波器的仿真功能。(Using a filter model modelica language to achieve filter simulation capabilities)

load flow analysis by newton raphson method