SoundAcquisition

Tracking Object using particle filter

基2 fft 的c++实现，改自matlab。(fft)

实现平面电磁波入射到2D无限长圆柱导体的电磁仿真，FDTD算法实现。(A plane wave incident on an infinitely long cylindrical conductor electromagnetic simulation, FDTD algorithm.)

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(Graduate study do not to upload copyrighted controversial content and Trojan code and agent software to access foreign sites)

说明：  buck-boost电路实现光伏系统的最大功率跟踪(buck-boost circuit realize maximum power tracking of photovoltaic system)

指数平滑法是对时间序列进行预测常用的方法之一,其理论基础是趋势外延，即未来一定时期内事物在数量上的演变特征不脱离过去的发展趋势,预测值是以前所有观测值的加权和,且对不同的数据给予不同的权数,越近期数据给予越大的权数,越远期的数据给予越小的权数。(Exponential smoothing method is commonly used to predict the time series one of the ways, the theoretical basis of the trend of the extension, that is, a certain period of time what the next evolution in the number of characteristics are not out of the development trend of the past to predict the value of all previous observations is the weighted and, on different data and different weights given to more recent data to give greater weights, the more long-term data to give the smaller weights.)

说明：  利用傅立叶反变换自动生成随机分形面，可生成各向同性或各向异性的。(Generating the 2D fractal surfaces using inverse DFT method)

雷达成像技术，西安电子科技大学，保真出的，里面包含了雷达成像的经典算法。(Study of Radar Imaging Algorithms)

三种DOA估计的仿真图，分别是常规波束形成、MVDR和MUSIC。(Simulation Diagrams of Three DOA Estimations)

利用小波变化，实现两幅前后景清晰度不同的图像的融合，获得一副清晰图像(Using wavelet transform, to achieve two different images before and after the King definition of integration, access to a clear picture)