sound-graph

读入一段数据后，计算有效信号的初至、持时及能量等属性，并作出事件属性判断。(Data into a period of time after the initial calculation of the effective signal to hold the time and energy, such as attributes, and attribute the incident to determine.)

线性调频信号的时域，幅频等有关的程序，成功运行(Chirp signal in time domain, amplitude and frequency and other relevant procedures, successful operation)

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综述了光纤光栅传感器近年来在工程结构健康监测、石油产业、电力行业、岩土工程、航空航天、采矿、爆破、交通及 医学等各个领域的应用情况。文章认为，限制光纤光栅传感器产业化和大规模应用的主要因素是缺乏统一的设计理论 和制作方法，这使得不同厂家生产的传感器规格存在差异。另外，由于复杂的生产技术和精细的生产过程使传感器生产 成本较高，而且能实际应用的光纤光栅传感器的解调产品并不多，且价格很高。根据上述分析，文中对该项技术未来的 发展方向提出了展望。(Overview of FBG sensors in recent years in various fields of engineering structural health monitoring, oil industry, power industry, geotechnical engineering, aerospace, mining, blasting, transportation and medical and other applications. Article that the main factor limiting FBG sensors and large-scale industrial applications is the lack of a unified design theory and production methods, which makes the sensors from different manufacturers specifications differ. In addition, due to the complexity of the production technology and sophisticated production process so that the sensor higher production costs, but also the practical application of fiber grating sensor product is not much, and the price is very high. Based on the above analysis, the article on the future direction of the technology raised the prospect.)

对bpsk信号进行调制，还可以对 qpsk ，16qam信号进行调制(For bpsk signal modulation, can also qpsk, 16qam signal modulation)

本文件采用Matlab软件，实现了拉普拉斯逆变换的计算。(This document is the use of Matlab software, the realization of the inverse Laplace transform calculations.)

向matlab图中添加坐标，简化坐标添加过程(Matlab figure to add coordinates to simplify the process of adding coordinates)

《Matlab批量读写Excel转化csv格式并邮件发送》内含三个函数： 1、MyXlsWriteV1.m:在不关闭Excel文件时，将所有数据写入到Excel中，减少读写时间：内含Excel单元格转化函数； 2、xlsx2csv.m把路径path中的xlsx文件批量转换为csv文件 ； 3、LjwSendQQMailV1:发送电子邮件,可含附件。 ("Matlab batch conversion of read and write Excel csv format and send mail" includes three functions: 1, MyXlsWriteV1.m: without closing the Excel file, all the data is written to Excel, reducing Reading time: Embedded Excel cell transformation functions 2, xlsx2csv.m path path in the batch convert xlsx file to csv file 3, LjwSendQQMailV1: sending emails, may contain attachments.)

说明：  压制干扰在雷达模拟中的应用，进行干扰模拟和识别。(Suppression jamming is applied in radar simulation to simulate and identify jamming.)

MUSIC算法估计性能分析,详细的介绍了MUSIC算法估计性能(It is very useful in array signal process )