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

卫星二体轨道动力学模型仿真，用于卫星轨道模拟，航天领域(Satellite two-body orbit dynamics model simulation)