One of the advantages of the dual-tree complex wavelet transform is that it can be used to implement 2D wavelet transforms that are more selective with respect to orientation than is the separable 2D DWT. There are two versions of the 2D dual-tr

线性调频（LFM）脉冲压缩雷达仿真,脉冲压缩雷达能同时提高雷达的作用距离和距离分辨率。这种体制采用宽脉冲发射以提高发射的平均功率，保证足够大的作用距离；而接受时采用相应的脉冲压缩算法获得窄脉冲，以提高距离分辨率，较好的解决雷达作用距离与距离分辨率之间的矛盾。-Linear frequency modulation (LFM) pulse compression radar simulation, pulse compression radar while increasing the role

Image retri techniques are useful in many image-processing applications. Content-based image retri systems work with whole images and searching is based on comparison of the query. General techniques for image retri are color, texture and shape. Thes

利用小波变换对信号进行固定阈值除噪处理，同时利用三种方法求出信号阈值-Wavelet transform the signal fixed threshold coring process, while taking advantage of three methods of obtaining signal threshold

连续生成4个随机数，同时求均值，绘制出该数据的曲线图。-Continuously generates four random numbers, while averaging, draw a graph of the data.