xuanbiliang

optimization nelder powell

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.)

PROGRASSIVE EDGE GROWTH 累加边增加LDPC算法(PROGRASSIVE EDGE GROWTH cumulative increase LDPC edge algorithm)

matlab在土木工程领域运用，有限元程序，求解振型和频率，给出了阵型图。程序已模块化(matlab use in the field of civil engineering, finite element program, to solve the vibration modes and frequencies are given in Figure formation. Program has a modular)

说明：  参考文献蓄电池等效电路模型，二阶RC等效电路模型(Reference to the paper on battery equivalent circuit model, second-order RC equivalent circuit model)

Create an impulse excitation

经典异步电机直接转矩控制，的simulink仿真(Classic direct torque control induction motor, the simulink simulation )

Mc-CDMA in Rayleigh Channel

Persian calender mfile 1392 in matlab

MIMO系统信道估计的经典MUSIC算法，有解释，可完美运行(MIMO channel estimation system of the classical MUSIC algorithm, there is explanation of the perfect run)