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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.)

原创，使用matlab对激发极化的极化率进行时间谱反演。采用GUI编程，非常方便。(Original use matlab polarization excitation polarization inversion time. GUI programming is very convenient.)

说明：  使用matlab语言编写FDTD散射问题(FDTD scattering problem with matlab language)

说明：  Compression and decompression VQ=vector quantization for image.

芯片资料 芯片资料 芯片资料 芯片资料 芯片资料 芯片资料(Information on data-chip-chip-chip-chip data data data-chip-chip data)

线性规划基本程序，有利于工程技术人员，学生。老师等编写程序(Linear programming basic program, it is helpful for engineering and technical personnel, the students and the teacher to write programs)

一个粒子滤波的简单例子，有助于理解粒子滤波的程序设计方法，程序列举了三种重采样方法(a particle filter simple example will help to understand the procedures particle filter design method procedures outlined three resampling methods)

关于OFDM的论文，希望对大家有帮助。Performance Analysis of Pulse Shaping Technique for OFDM PAPR Reduction(Performance Analysis of Pulse Shaping Technique for OFDM PAPR Reduction)

非线性滤波器工具箱，国外经典工具箱，可以节省大量精力，非常值得借鉴(Nonlinear filter toolbox, toolbox foreign classics, you can save a lot of energy, very worth learning)

说明：  matlab文件结合实例，实际的优化例子，很有用的(matlab file with examples, practical optimization example, very useful)