ultrasoundworkstation

Software-defined radios (SDRs) have been around for more than a decade. The first complete Global Positioning System (GPS) implementation was described by Dennis Akos in 1997. Since then several research groups have presented their contributions.We therefore find it timely to publish an up-to-date text on the subject and at the same time include Galileo, the forthcoming European satellitebased navigation system. Both GPS and Galileo belong to the category of Global Navigation Satellite Systems (GNSS).

ZFFT的matlab实现，可以输入任意序列以及欲观察的频段进行观察。使用时请将解压后的文件放置到matlab目录下，通过调用函数ZFFT实现。(ZFFT matlab realize, you can enter any sequence and want to observe the band was observed.)

此仿真程序是目前论坛里面最完整的仿真源码，并且经本人调试运行，完全没有错误，有很高的研究价值。为各位搞仿真和做OFDM系统相关论文的研究生，而没有全面仿真程序的人提供本程序。此程序包含52个仿真模块，可以仿真出52个仿真图。(This simulation program is the forum inside the most complete source of emulation and debugging, as I run, there is no error, has high research value. For you to do engage in OFDM system simulation and related post-graduate theses, and no comprehensive simulation program provide the program. This program contains 52 simulation module can be a simulation simulation Figure 52.)

space vector 2 level fast

聚类算法，不是分类算法。分类算法是给一个数据，然后判断这个数据属于已分好的类中的具体哪一类。聚类算法是给一大堆原始数据，然后通过算法将其中具有相似特征的数据聚为一类。这里的k-means聚类，是事先给出原始数据所含的类数，然后将含有相似特征的数据聚为一个类中。所有资料中还是Andrew Ng介绍的明白。首先给出原始数据{x1,x2,...,xn}，这些数据没有被标记的。初始化k个随机数据u1,u2,...,uk。这些xn和uk都是向量。根据下面两个公式迭代就能求出最终所有的u,这些u就是最终所有类的中心位置。(Clustering algorithm, not a classification algorithm. Classification algorithm is to give a figure, and then determine the data belonging to a specific class of good which category. Clustering algorithm is to give a lot of raw data, and then through the algorithm which has similar characteristics data together as a class. Here k-means clustering, is given in advance the number of classes contained in the raw data, then the data contain similar characteristics together as a class. All information presented in or Andrew Ng understand. Firstly, raw data {x1, x2, ..., xn}, the data is not labeled. K random initialization data u1, u2, ..., uk. These are the vectors xn and uk. According to the following two formulas can be obtained final iteration all u, u is the ultimate all these classes the center position.)

采用MATLAB中的控制工具箱和Simulink仿真模块，并用Bode图法实现超前校正器的计算机辅助设计,改善被控对象的性能(Using MATLAB in the control toolbox and Simulink Simulation Module, and ahead of Bode diagram implementation of computer-aided design corrector to improve the performance of object)

最基本的DOA算法--Capon算法的matlab仿真代码，希望对你有用！(Capon algorithm of matlab code for DOA. Hope it ll be a little useful for you!)

一个emd分解程序，包括瞬时频率，瞬时幅值，边际谱，Hilbert谱(A emd decomposition process, including instantaneous frequency, instantaneous amplitude, the marginal spectrum, Hilbert spectrum)

求信号频谱的源程序，使用傅里叶变换使得减低噪声的源程序。(qiu xin hao pin pu de yuan cheng xu,li yong fu li ye bianhuan jiandi zaosheng)

This code calculates the DFT of an array