Star chain target state estimation method and system based on TLE

The invention provides a TLE-based star chain target state estimation method, which comprises the following steps: acquiring a plurality of continuous orbital elements of a star chain target, and resolving the orbital height of the target in epoch time to obtain a target height sequence; correcting outliers in the star chain target height sequence; and calculating the height change rate of the target in the long and short periods, and estimating the state of the target based on the height change rate. The method has the advantages that the orbital elements of multiple continuous days serve as input data, the data are easy to obtain, the target height change rate is calculated in a short-period and long-period combined mode, the misjudgment rate is reduced, and the current state of the star chain target can be calculated in real time based on accumulation of historical data. 本发明提供了一种基于TLE的星链目标状态估计方法，包括，获取星链目标的连续多个轨道根数，解算目标在历元时间的轨道高度，得到目标高度序列；对星链目标高度序列中的野值进行修正；对目标计算长、短周期下的高度变化率，并基于高度变化率估计目标的状态。本发明的优点在于：以连续多天的轨道