QPSK-MSK-QAM-OFDM

ddd Coastal Land Use/Land Cover maps and Coastal Regulation Zone map on 1:25,000 and 1:50,000 scales derived from satellite data were collected from State Coastal Zone Management Authorities and enlarged into 1:12,500 scale. The georeferenced maps were digitized in ARC-INFO GIS. Digitized maps were edited, labeled and a layout was prepared. The area statistics of different Ecologically Important Areas were generated and presented in the maps.

MATLAB实现对录音信号的滤波，包括低通，高通和带通，以及时域和频域分析(MATLAB realize filtering of audio signals, including low-pass, high pass and band-pass, as well as the time domain and frequency domain analysis)

事先计算图像的标准差，可以用来评判图像变换是否可信(Calculate the standard deviation of the prior image can be used to judge the credibility of image transformation)

说明：  这个程序可以产生一个6阶的低通巴特沃思滤波器，截止频率是45Hz，你也可以用它来对信号进行滤波，并比较滤波前后的信号功率谱。(This program can generate a six-order low-pass Butterworth filter, cut-off frequency is 45Hz, you can also use it to filter the signal and to compare before and after filtering the signal power spectrum.)

kind of inverter that is controlable in matlab simulink

说明：  求解常规偏微分方程的MATLAB程序，十分便捷。(Matlab program for solving ordinary partial differential equations.)

说明：  基于MatlabR软件开发的一个相对导航算法，调试成功，可以直接再如使用(matlab pro)

基于FRFT雷达目标检测方法，并估计了目标距离，提出了一种LFM信号的非线性补偿方法。(FRFT radar target detection method based on distance and estimated target proposed nonlinear compensation method for LFM signals.)

Matlab code for adding noise to sinusoids and finding characteristics like pdfs ,cdf etc

lms算法的MATLAB实现。采用LMS算法对一段SIN+RANDOM的噪声滤除RANDOM后显示SIN。(lms algorithm MATLAB implementation. LMS algorithm using a SIN+ RANDOM then SIN displayed after noise filtering.)