02

现需要在高度为600~700KM范围内，回归周期为30天的太阳同步轨道上布置一颗L波段的合成孔径雷达卫星。 1. 请设计合适的轨道参数，并仿真对应轨道下一个运行周期内星下点轨迹图（纬度和经度两个图）； 2. 计算多普勒中心频率，多普勒调频率与纬度的关系图（设姿态角为0°，天线视角20°~60°，推荐35°）； 3. 按高斯投影方式，将星下点轨迹图投影到地图坐标上。(Now requires a height of 600 ~ 700KM range, return period of 30 days are arranged on a sun-synchronous orbit L-band Synthetic Aperture Radar satellites. 1 Please design the appropriate orbital parameters and simulate the corresponding orbit within the next operating cycle nadir trajectories (latitude and longitude two graphs) 2. Calculate the Doppler center frequency, Doppler frequency and the relationship between latitude Figure (set attitude angle is 0, the antenna angle of 20 to 60, recommended 35) 3 Press Gauss projection, the nadir trajectories projected onto the map coordinates.)

一些实用的Matlab程序，对混沌系统进行各种仿真(MATLAB Program File Index and Simulink Model File Index)

simulation HVDCCigre in matlab simulink

The random walker algorithm was introduced in the paper: Leo Grady and Gareth Funka-Lea, "Multi-Label Image Segmentation for Medical Applications Based on Graph-Theoretic Electrical Potentials", in Proceedings of the 8th ECCV04, Workshop on Computer Vision Approaches to Medical Image Analysis and Mathematical Methods in Biomedical Image Analysis, p. 230-245, May 15th, 2004, Prague, Czech Republic, Springer-Verlag. Available at: http://cns.bu.edu/~lgrady/grady2004multilabel.pdf

it is a single machine connected ti infinity bus with SVC & TCSC & PSS

三相SPWM逆变器仿真分析，可以出正确波形(Three-phase SPWM inverter simulation analysis, the correct waveform)

opensees 调用 matlab 进行参数优化(opensees matlab optimize parameter)

一种经典的加强学习算法，用贪婪的方式将收集的能量全部发出(an algorithm to reinforcement learning)

ofdm using clipping method

压缩感知代码！小波分析理论与MATLAB(Compressed sensing code! Wavelet analysis theory and MATLAB)