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说明：  a great paper for research and development

VB实现Win8风格扁平化UI源码包，资源类文件在目录Ctl文件里面。使用方法： 　　1.将CTL文件和CTX文件复制到你的程序目录下。 　　2.打开工程，选择工程-添加用户控件-现存，把全部CTL文件添加进去。 　　3.拖放在窗体上即可。 　　提示：未集成窗体控件，需要把Form1调为无边框窗体，用Shape画一个长方形/正方形，线条宽设为3，颜色随意。 　　关闭按钮用集成的图片框去做（已经封装素材）。

说明：  该资料为一款UPS电源设计资料，资料包括UPS电源原理讲解和参数计算，可以作为UPS学习的资料(This material is a UPS power supply design material, including UPS power supply principle explanation and parameter calculation, which can be used as UPS learning material)

excel_vba 技巧精粹――第二篇 操作Excel对象-第二篇 操作Excel对象

是基类对象

STM32F407读写NanoFlash示例(STM32F407 read NanoFlash Example)

多重信号分类（MUSIC）算法，进行线列阵测向问题研究(Multi-signal Classification (MUSIC) Algorithms for Linear Array Direction Finding)

本文首先介绍了近些年来雷达模拟器获得广泛应用及其原因，然后对目标模 型、杂波模型和机载下视脉冲多普勒雷达的频谱分布进行了分析。接着，研究了 雷达回波信号模拟的实现方法，重点是采用网格映象法对地杂波信号的模拟进行 了分析和推导，并采用此方法对瑞利分布的高斯谱杂波、雷达回波信号进行了仿 真和分析。最后，针对用于某机载雷达信号模拟器系统的数字信号处理器进行了 设计和分析。 (This paper first introduces the radar simulator in recent years is widely available and the reasons for, and then on the target model, and the clutter model of airborne pulse Doppler radar, as under the spectrum distribution is analyzed. Then, to study radar signal simulation methods, with emphasis on the use of grid mapping method to the simulated clutter signal analysis and derivation, and use of this method, the Gaussian distribution of the Rayleigh spectrum of clutter, the radar echo signal simulation and analysis. Finally, for an airborne radar signal simulator system digital signal processor has been designed and analyzed.)

可以控制3路继电器，访问本地IP 首先用调试工具知道ip 自己设置WIFI 密码账号(3-way relay can be controlled)

说明：  Canvas雪花散开放大动画特效是一款基于HTML5 Canvas实现的雪花动画特效下载。(Canvas Snowflake Dispersion Open animation special effects is a snowflake animation special effects download based on HTML5 Canvas.)