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中文摘要：
采用一阶马尔科夫过程对机动期间的轨道姿控力进行建模,并推导了基于该模型的参数估计方法。利用C波段转发测距体制对GEO卫星机动期间实测数据进行处理,结果表明,该方法能够达到较好的轨道拟合效果。
英文摘要：
The precision of GEO orbit plays an important role in regional navigation system when the hybrid constellation of GEO/IGSO/MEO was involved. Determintion of the orbit of GEO during orbital maneuver is important. A first order Markov stochastic process was used to construct the thrust acceleration model, and the correlative parameter estimation method was developed. Based on this algorithm, the TWTT （TWO-WAY TIME TRAN- FER） measurement was used to determinate the GEO maneuver orbit. Eperimental results show that this algorithm is remarkable to fit the maneuver orbit.
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