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大二，编译原理，课后习题答案，仅供学习参考之用-Sophomore, compiling principle, after-school exercise answers, only to learn reference

RS232 Example for RS232 communication

在现代信号处理这门课程中，对关于谐波恢复这一概念的理解以及代码的实现仿真(In the course of modern signal processing, the understanding of the concept of harmonic recovery and the simulation of the implementation of the code)

左右两场相关矩阵的奇异值分解，针对站点文件（svd）-Two related matrix singular value decomposition (svd)

是matlb语言，对阶跃折射率分布光纤对接模型中的光场分布，进行了模拟-Is matlb language, on the step refractive index distribution of optical docking model of optical field distribution, a simulation

说明：  1、支持多种主流编程语言 　　产品支持在VC++、VB、。Net和html中调用控件。 　　2、提供可靠的安全性 　　用户只可在线浏览图纸文件，无法进行拷贝、另存和打印等操作。 　　3、无需安装AutoCAD即可实现在线浏览图纸文件 　　采用自主图纸解析引擎，脱离AutoCAD，即可浏览图纸文件。 　　4、提供了方便的浏览辅助工具 　　为用户提供了一系列的浏览辅助工具，方便用户进行浏览，其中包括：移动、放大、缩小、充满显示、开窗放大，测量距离和面积等。 　　5、支持多版本CAD图纸文件 　　支持浏览R14-2015版本的图纸文件(1, support a variety of mainstream programming languages Product support in VC++, VB,. Call controls in Net and html. 2, providing reliable security Users can only view drawing files online, and cannot copy, save, and print. 3. Online browsing of drawing files without installing AutoCAD Use the autonomous drawing analysis engine to get rid of AutoCAD and browse the drawing files. 4, provides a convenient browsing aid Provide users with a series of browsing aids for users to browse, including: moving, zooming in, zooming out, full display, window zooming, measuring distance and area. 5, support multi-version CAD drawing files Support for viewing drawing files of R14-2015 version)

使用最小二乘法进行数据平滑。matlab实现(A smooth method first mentioned by Savitzky and Golay in the paper Abraham Savitzky & Marcel J. E. Golay. Smoothing and Differentiation of Data by Simplified Least Squares Procedures. Analytical Chemistry.1964,36(8):1627-1639.)

说明：  实现频率测量，一个是用DSP28335实现测量，一个是用stc89c52实现频率测量。(To achieve frequency measurement, one is to use DSP 28335 to achieve measurement, and the other is to use STC89C52 to achieve frequency measurement.)

拉曼光谱特征光谱峰识别，以及峰的积分面积计算，给大家参考(Raman spectrum, spectral peaks recognition, and peak integral area calculation, for your reference)

说明：  认知无线电单门限matlab程序，希望对大家有所帮助(Cognitive Radio Single Threshold)