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rowflying
- 串行编队卫星构形可观测性分析数值仿真程序,内建有二体轨道动力学模型,加入J2项摄动,并且使用了非线性EKF滤波算法。-Extended kalman filter was exploited to simulate the rowflying formation,J2 purtabation was taken into consideration
track_J2
- 考虑J2摄动的轨道预报,时间为tle中的时间格式(Orbital prediction considering J2 perturbation)
J2
- 考虑地球扁率摄动,求解近地卫星轨道六根数,(Consider J2 perturbation to solve the number of six tracks)
orbit_integrator
- 考虑地球J2项摄动的轨道积分器,变步长,基于龙格库塔78阶,(orbital integrator considering the J2 pertubation, based on the Runge-Kutta 78 integrator, use automatic step control)
TwoBody
- 二体问题求解程序 包含两个文件: 1.orbit_solver.m 初始化程序,数值计算并画图输出。 在此设置卫星的初始位置坐标r0和速度v0,设置仿真起止时间t0和tf,然后可以直接运行即可。 2.dif_orbit_dynamic.m 轨道动力学函数,包括无摄动力学和J2摄动下的动力学方程,具体采取何种动力学需要在此程序中进行设置。(Two body problem solving program There are two files: 1.orbit_ Solver. M initial