MUSIC.SNR

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.)

直流电机的起动，制动，调速。其中含有各个部分的matlab仿真模型。(DC motor starting, braking, speed. Which contains various parts of matlab simulation model.)

本文介绍了matlab的主要函数指令表及图像处理的matlab实现。(This article describes the main function of the matlab command table and to achieve matlab image processing.)

利用matlab软件实现通信中的低通滤波器，将信号进行低通滤波，滤出我们所需要的信号(Using matlab software to achieve low-pass filter in the communication, the signal low-pass filter, filter out the signals we need)

国外人编写的一个分数阶系统的控制工具箱，可以设计分数阶控制器，评价系统性能(Abroad were prepared by a fractional order systems control toolbox, can be designed fractional order controllers, evaluation of system performance)

触摸芯片WTC6316使用程序，适合开发者使用，也适合学习交流(use of touch key WTC6316)

霍夫变化的方法提取直线，图像处理方面的应用。(Extraction of straight line Hough changes in the application of image processing)

matlab的教学案例分析，详细介绍了matlab的一些功能(matlab teaching case studies, detailing some of the features matlab)

VMD变分模态分解，vmd函数是通用的，vmd_test是1s专用的，所以只要改test文件，要设一个时间(VMD variable modal decomposition, vmd function is universal, vmd_test is dedicated to 1s, so just change the test file, set a time)

Matlab codes for numerical analysis