mmzoom

说明：  关于SAR成像的BP算法 关于SAR成像的BP算法(A very good BP imaging algorithm)

这是运用MATLAB进行编程的一些应用,可供大家学习一下(This the use of MATLAB programming some applications are available for learning about )

Numerical approximation rn of the definite integral from a to b that is obtained with the aid of Romberg s method with n rows and n columns.

利用 matlab进行数字图像矩阵数据的显示及其傅立叶变换(the show of digital picture )

首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。(First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform)

调用factoran函数根据相关系数矩阵作因子分析(Factor analysis based on correlation coefficient matrix by calling factoran function)

说明：  本次设计是对GSM TCH/FS信道进行编码设计及性能仿真,仿真通信系统包括内外编码器、交织重排器、加性/突发和混合干扰信道、去交织反重排器、内外译码器，模拟了信息从信源到信宿的全过程； 在高斯噪声、突发干扰或混合信道及瑞利信道下测试每个步骤对误码率和系统性能的影响，通过数字及图形的比较，得出通信系统中各个模块的作用。另外，在GSM TCH/FS 的基础上建立GSM TCH/EFS 信道，对相应的信道环境进行仿真，得出误码率分析。 (This design is the GSM TCH/FS channel encoded design and performance simulation, simulation communication system, including internal and external encoder, interleaving rearrangement device, the additive/burst and mixed interference channel, to the cutting device against rearrangement, internal and external decoding and analog information from the source to the destination of the whole process in Gaussian noise, sudden disruption or mixing channel and Rayleigh channel to test each step of the bit error rate and system performance, by comparison of digital and graphic obtained communication systems the role of each module. In addition, GSM TCH/FS based on the established GSM TCH/EFS channel, the corresponding channel environment simulation, the error rate analysis)

about maximum peak power tracking

说明：  运用MATLAB语言将矩形波转换成正弦波以及绘制学生成绩图(The use of MATLAB language to convert the rectangular wave sine wave and the mapping of student achievement plans)

这是一本有关MATLAB的参考书，适合于使用MATLAB或正在打算使用MATLAB的读者。本书另辟蹊径可以借助或不借助MATLAB随带的文档资料让读者自学MATLAB。书中口语化的风格,使读者易于阅读。如书名所示,本书提供了读者精通MATLAB所需的工具。作为编程语言和可视化工具,MATLAB具有丰富的一系列功能,可解决工程、科学计算和数学学科中许多问题。本书的基本目的是通过向读者展示如何有效地使用这些功能来帮助读者增强工作能力。由于MATLAB交互式的性质,书中内容以举例方式来描述。在读者阅读本书的同时, 这些例子可以通过运行MATLAB而再现。 本书只涉及一般读者所用到的一些专题,所提供的资料可用于包括UNIX工作站、Macintosh 和PC在内的所有计算机平台。除了标准的MATLAB本身这部分的功能之外,书中只讨论了字符工具箱。其它更为专用的工具箱没有进行讨论。而且,没有讨论与机器有关的MATLAB诸方面,例如MEX文件的编写。 本书开发了许多M文件函数,它扩展了MATLAB的功能。在书中,作者演示了各种MATLAB的功能和编程技术,它们总称为精通MATLAB的工具箱。 (This a reference book on MATLAB. suitable for use MATLAB or intend to use MATLAB readers. The book can take advantage of alternatives to using MATLAB or not accompanied by the documents and information for readers to self- MATLAB. The book colloquial style, so that readers easily readable. As indicated in the title, this book provides readers proficiency in the necessary tools for MATLAB. As a programming language and visualization tools, MATLAB is rich in a variety of functions, address, Scientific Computing and Mathematics subjects of many of the problems. The book's basic aim is to show readers how to effectively use these functions to help users enhance their ability for work. As MATLAB interactive nature of the book as a way of example to describe. In the book readers at the s)