【作者】 彭军还； 陈磊； 李淑慧； 冯初刚；

【Author】 Peng Junhuan~1,Chen Lei~1,Li Shuhui~1,Feng Chugang~2 1 Department of Surveying and Mapping,China University of Geosciences(Beijing),10083,Beijing 2 Shanghai Astronomical Observatory,Chinese Academy of Sciences,200030,Shanghai

【机构】 中国地质大学(北京)测绘工程系； 中科院上海天文台；

【摘要】 <正>For the geostationary satellite of more than 30000 kilometers over the earth,its motion equation can be thought of as accurate because the impact of the figure and irregularity of the earth on the satellite can be neglected.When residuals show non-Gaussian,the factor can be attributed to the inaccuracy of the observational equation due to ionosphere,troposphere, instrumental errors and/or the others.This PaDer proposes the colored random walk model as the compensation to the observational equation in the presence of systematical errors.The corresponding EM batch processing algorithm is constructed to find the state parameters and systematical errors.The numerical result shows that the compensation model iS feasible for improving state parameters:the constructed EM algorithm iS efficient.更多还原

【Abstract】 For the geostationary satellite of more than 30000 kilometers over the earth,its motion equation can be thought of as accurate because the impact of the figure and irregularity of the earth on the satellite can be neglected.When residuals show non-Gaussian,the factor can be attributed to the inaccuracy of the observational equation due to ionosphere,troposphere, instrumental errors and/or the others.This PaDer proposes the colored random walk model as the compensation to the observational equation in the presence of systematical errors.The corresponding EM batch processing algorithm is constructed to find the state parameters and systematical errors.The numerical result shows that the compensation model iS feasible for improving state parameters:the constructed EM algorithm iS efficient.更多还原