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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 numerical integration method .)
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 term is included.)
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)