xiaoboshu

In a normal communication channel, it is often desirable to concentrate the information in as narrow a region of the frequency spectrum as possible in order to conserve available bandwidth and to reduce power. The basic spread spectrum technique, on the other hand, is designed to encode a stream of information by spreading the encoded data across as much of the frequency spectrum as possible. This allows the signal reception, even if there is interference on some frequencies. While there are many variations on spread spectrum communication, we concentrated on Direct Sequence Spread Spectrum encoding (DSSS). The DSSS method spreads the signal by multiplying it by a chip, a maximal length pseudorandom sequence modulated at a known rate. Since the host signals are in discrete-time format, we can use the sampling rate as the chip rate for coding.

语音处理的短时时域处理技术中的短时过零率的MATLAB编程( In pronunciation processing short-time time domain processing technology short-time zero rate MATLAB has programmed )

以2DPSK为例仿真说明数字频带传输的整个过程。(Description 2DPSK simulation as an example to figure the whole process of transmission band.)

实现火箭的垂直发射，并在重力作用下实现转弯。(Achieve vertical launch rocket and turn under the influence of gravity.)

最小二乘优化算法。Matlab源码，直接可以使用。(Least Squares optimal affine subspace The zip includes: (1) lsqAffineSpace: a low level routine that takes a set of m-dimensional real sample data and returns the optimal-fit k-dimensional affine subspace, with some options for discarding outliers. (2) lsqPlane and lsqLine: lsqAffineSpace wrappers, that compute optimal line and hyperplane (plane, if the samples are 3-vectors) of the input samples. (3) lsqAffineTestScript: demonstrating usage of the functions.)

里面包含emd工具包HHT工具包eemd工具包，还有eemd边际谱算法，已经试验过可以用的(Emd kit which contains HHT kit eemd kit, there eemd marginal spectrum algorithm has been tested can be used)

pattern recoginition system

EDGE DETECTION TECHNIQUES

说明：  用刚度文件FEM，对模型进行不同单元的损伤识别，同时得到损伤程度(The stiffness file FEM is used to identify the damage of different elements of the model, and the damage degree is obtained at the same time.)

说明：  现代控制理论，包括LQR、鲁棒控制、滑膜控制、自适应控制等实例(Examples include LQR, robust control, synovium control, etc)