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Satellite_orbit_design
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.)
- 2013-07-19 14:56:28下载
- 积分:1
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The-interpolation-and-fitting_matlab
matlab插值与拟合,包含了ppt课件以及实例,方便于更好的理解与学习,还有程序代码(The interpolation and fitting_matlab)
- 2013-12-23 15:56:58下载
- 积分:1
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matlab_ga
用matlab实现遗传算法的简单程序,采用二进制编码(With a simple genetic algorithm matlab implementation procedures, the use of binary encoding)
- 2015-03-30 09:59:53下载
- 积分:1
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MATLAB_introduction
matlab reference manual
- 2010-06-13 20:49:14下载
- 积分:1
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变换模块 本模块包含两部分内容IM0623
(1)变换模块
本模块包含两部分内容:利用 反变换规则将 坐标系下的两相电流转换成三相电流;利用间接矢量控制,得到转子角位移,公式如下(2) 电流滞环控制器(Hysteresis current controller)模块(3) 电压源型逆变器(Voltage sourse inverter,VSI)模块
(4) 变换模块(5) 感应电机(IM)模块
该感应电机模型是基于交流电机的电路方程、转矩方程以及运动方程建立起来的。该仿真模块为一个三输入、六输出的系统子模块。输入为 坐标系中定子电压,输出则是 坐标系中的转子电流和转子磁链,以及输出的转矩。(6) 电流反馈模块(7)速度控制器模块
()
- 2008-03-19 17:12:01下载
- 积分:1
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COST231Models
说明: 根据传输频率、天线高度、距离等因素,仿真在多种场景下的大尺度衰落模型(According to transmission frequency, antenna height, distance and other factors, the simulation in a variety of scenarios of large-scale fading model)
- 2010-03-18 11:14:24下载
- 积分:1
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sim_model
基于非线性动态逆的F18飞行控制仿真,包括动态逆的构建、PD控制律等(Control based on nonlinear dynamic inversion F18 flight simulation, including building dynamic inverse, PD control law, etc.)
- 2021-01-21 14:48:43下载
- 积分:1
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tianranqi
天然气冷热电联供系统运行优化 matlab simulink 模型 可供参考(Matlab Simulink model for operation optimization of natural gas cogeneration system)
- 2021-03-18 21:19:19下载
- 积分:1
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fone
计算Tm,Ho共掺光纤激光器稳态工作时,粒子数沿光纤长度方向上的分布情况以及输出特性(Calculation of Tm, Ho co-doped fiber laser steady-state work, the number of particles along the fiber length direction, as well as the distribution of the output characteristics)
- 2009-05-07 21:50:01下载
- 积分:1
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transmit
无线信号发送主要采用多位数据格式,编码可达上百万个不同重复(Wireless signal mainly adopts several data format, coding can be up to millions of different repetition)
- 2013-12-02 16:04:04下载
- 积分:1