标题：Estimation of pseudo-stochastic pulses and their applications in reduced-dynamic orbit determination
作者：Han, Baomin ;Zhu, Xiuying ;Liu, Lintao ;Qu, Guoqing
作者机构：[Han, Baomin ;Qu, Guoqing ] School of Architecture and Engineering, Shandong University of Technology, 12 Zhangzhou Road, Zhangdian District, Zibo 255 更多
来源：Geomatics and Information Science of Wuhan University
摘要：The definition, characteristics and mathematical model of pseudo-stochastic pulses utilized in reduced-dynamic orbit determination are systematically analyzed. With the help of the real onboard GPS observations from spaceborne receiver on CHAMP satellite, the stochastic pulses are estimated with different force models and observations of different types, and the variation of stochastic pulses in different cases and adjust impact of pulses on orbit accuracy are analyzed in detail. The results show that the sizes of stochastic pulses mainly depends on the force models, whether estimating experience parameters or not and accuracy of observations used. In the cases of relatively big model errors, the set of stochastic pulses can efficiently compensate or absorb the impacts of model errors, so the orbit accuracy can be improved accordingly.