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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
J2Prop
- 二体问题条件下，带有J2摄动的ECI状态量传播预测，-Propagate an ECI state into the future with the J2 perturbation.
06_UT J2 解析 无短周期
- 对目标弹道受力进行分析，考虑J2摄动的影响，并包含短周期项，弹道预报方法使用数值积分法(The force of the target trajectory is analyzed, considering the influence of the J2 perturbation, and contains the short term term, the trajectory prediction method using numer
06_UT J2 解析 有短周期
- 使用数值积分法进行弹道预报，弹道建模时考虑进J2摄动项的影响，并包含短周期项(The numerical integration method is used to predict the trajectory, and the influence of the J2 perturbation term is considered when the trajectory is modeled, and the short term te
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 fil