zishiyingzuoye

The aim of the assignment is to understand the concept of the image enhancement stage We need to know the technique to improve the image or better input for the image processing technique as in the assignment. In the first part of the assignment is the segmentation using thresholding technique. Before we threshold the image, we need to prepare the better image for input such as histogram equalization to stretch the intensity value of the image before converting to binary image. In the second part of the assignment is about frequency domain. We need to transform the spatial image to frequency image using Fourier transform of the image before using the filter.

说明：  BP神经网络异或问题 使用说明：打开文件夹中的BP.m文件，在matlab中运行此m文件，即可在command window中得出结果。压缩包内附说明文件 (XOR problem of the BP neural network for use: Open the folder in BP.m file, run this m file in matlab to the outcome of the command window. Compression package containing the documentation)

已知单位负反馈系统被控对象的传函为: • 设计滞后-超前校正装置,使校正后的系统满足: • (1).在单位斜坡信号作用下,Kv=10s^(-1) • (2).校正后相角裕度³ 45° • (3).系统校正后剪切频率wc ³ 1.5s^(-1) • (4).时域性能指标:s％£ 30％,Tp £ 2s,Ts £ 6s (units known negative feedback system object to the transfer function :)

EMD方法，可将非平稳信号降解为单频信号。用于分析其频谱特性。(EMD method, the non-stationary signal degradation for single-frequency signal. For the analysis of their spectral characteristics.)

J Unit Test Suite Adapter Source Code for Andriod.

matlab 的短时傅里叶变换代码， STFT， 简洁实用(code of STFT with matlab)

说明：  matlab 的最好的一本教科书，北航张志涌(matlab one of the best textbooks, BUAA Zhang Yong)

北斗下，VPL随国内位置变化而变化的示意图(RAIM algorithm of BD, VPL Changes over domestic location diagram)

TD_SCDMA中的联合检测算法 TD_SCDMA中的联合检测算法 (TD_SCDMA in the joint detection algorithm)

it is for demo beutiful in the matlab