基于稳健补偿的卫星数据电波折射误差修正方法

折射误差是观测数据包含的主要误差源之一,也是影响卫星跟踪与控制以及轨道确定精度的主要因素。由于实时观测数据采样格式的不同,同一个采样时间内本应互相匹配的测量元素,因为丢失、干扰等而变得不再匹配,从而使得卫星实时跟踪数据包含的折射误差难以准确修正。提出的观测数据双向稳健补偿方法有效地解决了同一采样时间内测量元素的匹配问题,以及折射误差的修正问题,确保了卫星轨道确定的精度。实测数据计算以及定轨结果检验表明,该方法是有效的实用方法。

Refraction error correction method based on robust compensation in satellite observed data

The refraction error is a main error source in the measurementdata.It is also a main factor affecting the satellite tracking and control accuracy and orbit determination accuracy.Because of the difference of the sampling formats and the loss of data observed in real time,the observed elements that must be matched in the same sampling time become mismatched,which makes it difficult to correct the refraction error in the measured data.The robust compensation method proposed can solve the matching problem and the refraction error correction problem effectively.The simulation demonstrates that the method is a very efficient and practical method for orbit determination.