大地测量与地球动力学2011，Vol.31Issue(4)：80-83,89,5.
卫星钟差实时估计的收敛分析
CONVERGENT ANALYSIS OF REAL-TIME ESTIMATION OF SATELLITE CLOCK BIAS
摘要
Abstract
The effects of the station amount, observation time and station distribution on the estimated satellite clock biases were analyzed. The results show that,general speaking,the increment of station amount and observation time is conducive to improve the estimated accuracy of satellite clock bias. However, the increment of station a-mount will increase the time-assuming, in order to ensure the accuracy and the property of real-time, it is useful to select the appropriate station distribution and amounts, which are conducive to the real time estimation of satellite clock biases and their application. Real-time precise point positioning (PPP) tests show that, compared with the PPP positioning based on the IGS final precise clock, due to the effect of low precision of estimated clock bias in the initial phase, it makes the parameter convergence of PPP positioning require more time.关键词
非差/实时/卫星钟差估计/精密单点定位/测站Key words
un-differenced/ real-time/ satellite clock bias estimation/ Precise Point Positioning (PPP) / station分类
测绘与仪器引用本文复制引用
李黎,朱建军,陈永奇,匡翠林,龙四春,李洪玉..卫星钟差实时估计的收敛分析[J].大地测量与地球动力学,2011,31(4):80-83,89,5.基金项目
国家自然科学基金(40974007,41004012,41004002) （40974007,41004012,41004002）
中南大学前沿研究计划(2009QZZD002) （2009QZZD002）
