rk4

本文件主要是对于飞行器的轨迹的模型描述和辨别，以及对于不同坐标下的转换。(This document is the main model to describe and identify the trajectory, and the conversion for different coordinates.)

1.灰色预测领域的权威书籍，详细介绍灰色预测模型。 2.经典灰色预测案例，并附有matlab操作程序，简单明了。(1., gray prediction authority books, detailed description of the gray forecasting model. 2. classic gray forecasting case, and accompanied by MATLAB operating procedures, simple and clear.)

matlab的常用指针表，综合辅导与指南，符号语言工具箱(matlab common pointer table, comprehensive counseling and guidance, sign language toolbox)

truetime 的例子,介绍无线通信过程，使用truetime2.0(truetime example, describes the process of wireless communications, use truetime2.0)

PSK modulation scheme with offset

说明：  后联平滑滤波器的卡尔曼滤波器的使用，这个代码很不错的哦(After the joint smoothing filter is the use of the Kalman filter, this code is very good Oh)

matlab与VC版本的FFT与FIR程序代码(FFT and FIR code written in both matlab and stand C)

说明：  数模2015A题程序设计，给定影子长度计算所在位置的经纬度。(MCM 2015A The program design of digital and analog question 2015A calculates the longitude and latitude of the position given the shadow length.)

提取图像sift特征，并且showkey函数在图像上直观的显示出来(Sift extracted image features, and showkey function in the image displayed on the intuitive)

qpsk 调制与解调 其星座图以及误码率图形以及原始代码(qpsk erb)