yichuansuanfa

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.)

包括针对调制识别的ASK,PSK,FSK,16QAM,以及hilbert变换的matlab源代码，注意是针对调制识别的(Including modulation recognition for ASK, PSK, FSK, 16QAM, and hilbert transform matlab source code, attention is directed modulation recognition)

说明：  图像匹配，拼接等源程序，里面附有图片的说明的(image matching，stiching based on matlab)

说明：  Frequency Hopping Spread Spectrum 这是一个跳频信号的时频分析程序(Frequency Hopping Spread Spectrum is a frequency-hopping time-frequency analysis program)

2000年SCI上发表的两篇开创性的流行学习文章的仿真代码。关于LLE和ISOMAP的仿真程序，其中详细说明了实现的步骤。(2000 SCI published two seminal study popular articles simulation code.)

MSPC分析，多变量过程统计控制,实验过程样本中的异常值检测(multivariable process statistical control)

包括蚁群优化算法，梯度优化算法两个文档。(Including ant colony optimization algorithms, gradient optimization algorithm the two documents.)

matlab code for generation of MSksignal

说明：  几个计算光子晶体带隙的源代码，希望对大家有用。(Calculation of photonic band gap of several source code, we want to be useful.)

CMA WITH N EQUAL TO 8,4,20