摘要
在抗差M估计中应用最广泛的是选权迭代法,选权迭代法根据权函数的不同又分为很多方法。用IGS九个数据分析中心的数据采用抗差M估计和动力学平滑的方法得到综合轨道,并针对三种不同的选权迭代法得到的综合轨道进行分析和比较。该方法利用抗差M估计,采用选权迭代方法抑制了轨道异常影响,从而使综合轨道更加精确;针对轨道不连续问题,采用动力学平滑方法得到了连续的综合轨道。为了证明方法的正确性,用IGS轨道数据作为外部检核。结果表明:利用IGG法得到的卫星综合轨道具有很高的精度,并且较易实现。
The most widely used method of Robust M-estimation is to select the right iteration, and it is divided into many different ways based on the different right function. In this paper, robust M-estimation and smooth dynamics approach is used to process the data of nine IGS data analysis centers, and through analysis and comparison of three different iteration method a conclusion is obtained. By using the right iteration method on the impact of orbital anomalies is resisted, so that the general orbit is more accurate; for the problem of orbit is not continuous, through dynamic smoothing method continuous track is gotten. To prove the correctness of the method,IGS orbit is used as an external check. The results show that the general orbit of IGG method is highly accurate,and easy to come true.
出处
《全球定位系统》
2013年第1期8-11,27,共5页
Gnss World of China
