d2d

说明：  利用功率谱反演法得到相位屏，用于模拟在大气中传输时大气湍流造成的相位影响(The phase screen is obtained by power spectrum inversion method, which is used to simulate the phase effect caused by atmospheric turbulence when transmitting in the atmosphere)

波束形成就是从传感器阵列重构源信号。（1）、通过增加期望信源的贡献来实现；（2）、通过抑制掉干扰源来实现。经典的波束形成需要观测方向(期望信源的方向)的知识。盲波束形成试图在没有期望信源方向信息的情况下进行信源的恢复。 波束形成技术的基本思想是：通过将各阵元输出进行加权求和，在一时间内将天线阵列波束“导向”到一个方向上，对期望信号得到最大输出功率的导向位置即给出DOA估计。 虽然阵列天线的方向图是全方向的，但阵列的输出经过加权求和后，却可以被调整到阵列接收的方向增益聚集在一个方向上，相当于形成了一个”波束”。这就是波束形成的物理意义所在。

使用keil5编写的STM32输出四路互补的PWM，适配正点原子的mini版，同样是为电赛逆变系统做的准备。通过定时器的输出比较模式，在PC6~PC9，输出4路PWM，每路PWM频率为500Hz，占空比为50%，每一路PWM相位差为45°(The STM32 output four complementary PWM, which is written in keil5, is suitable for the mini version of the positive point atom, which is also the preparation for the electric match inverter system.Through the output comparison mode of the timer, in PC6~PC9, the output 4 road PWM, the PWM frequency of each road is 500Hz, the duty ratio is 50%, and the PWM phase difference of each road is 45 degrees.)

运动控制卡应用事例程序，对编程人员很方便。-control card application software

PHYDAYS项目组研究成果，包括滤波器的设计，fbmc的系统的快速实现等(PHYDAYS Research results, including filter design, fast implementation of fbmc system, etc.)

说明：  经过预处理、车牌定位、字符分割、字符识别进行车牌识别。(License plate recognition is carried out after preprocessing, license plate location, character segmentation and character recognition.)

说明：  PixelPlus PR2000k Datasheet

《Delphi 2005数据库系统开发与应用》源代码- Delphi 2005 database system development and application of the source code

一个access vba的源码，功能为根据读取xml，csv来实现数据分析，并保存到access db，生成报表，支持预览及打印功能，是用日语做的，说明书以及操作用的xml，csv也包含其中。(An access vba source code, function according to read xml, csv to data analysis, and save it to access db, generate reports, preview and printing support is done in Japanese, manuals, and operating with the xml, csv also included.)

说明：  1D DOA Estimation with Partial Covariance Matrix and without Eigendecomposition Fast algorithm for 1D AOA with partial Covariance matrix.