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ECI与ECEF转换关系，卫星轨道模型方法，应用相关(ECI and ECEF conversion relation, satellite orbit model method, application correlation)

说明：  新标准C++程序设计教程/重点大学计算机专业系列教材配套习题解答(New Standard C++ Programming Course/Solutions to Exercises in Computer Series Textbooks of Key Universities)

本程序仿真了DS_CDMA的原理，直接可用，是学习CDMA的很好的教程(This procedure DS_CDMA simulation of the principle, directly available, is to learn from the good CDMA Tutorial)

说明：  包括均匀线阵方向图、波束宽度与波达方向及阵元数的关系、当阵元间距时，会出现栅瓣，导致空间模糊、类似于时域滤波，天线方向图是最优权的傅立叶变换、最大信噪比准则方向图和功率谱、线性约束最小方差(LCMV)准则、Capon beamforming的MATLAB仿真图(Including the relationship between uniform linear array pattern, beam width and direction of arrival and number of elements, when element spacing, grating lobes will appear, resulting in spatial ambiguity, similar to time-domain filtering, antenna pattern is the optimal weight of Fourier transform, maximum signal-to-noise ratio criterion pattern and power spectrum, Linear Constrained Minimum Variance (LCMV) criterion, Capon Beam Forming MATLAB simulation diagram.)

说明：  机器学习及其matlab实现一书第十八章的代码，有详细的注释，供初学者借鉴，比较好学习强化学习资料。(Machine learning and matlab implementation Chapter 18 of the code, there are detailed notes for beginners to learn from, better reinforcement learning materials.)

说明：  《深入浅出Python机器学习》源码 ipynb格式("Deep and Simple Python Machine Learning" Source Code ipynb Format)

该模型仿真了直流微电网的运行模型，具有较好的动态性能(The model simulates the operation model of DC microgrid and has better dynamic performance.)

poi-2.5.1-sources.jar poi 2.5.1的源码(poi-2.5.1-sources.jar the source code of poi 2.5.1)

说明：  有关应用matlab编写的有限元函数,其中包含了一些最基本的有限元的基本函数,对于应用有限元法模拟电磁场欧很大的帮助(Matlab prepared for the application of the finite element function, which contains the most basic finite element basic function, using the finite element method simulation of electromagnetic fields in Europe a great help! !)

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