【作者】 朋子涵； 高成发； 尚睿；

【Author】 Peng Zihan;Gao Chengfa;Shang Rui;Southeast University;

【机构】 东南大学；

【摘要】 紧组合模型是多系统GNSS数据融合的重要方向,目前研究主要集中于短基线紧组合模型,本文对GPS/BDS中长基线紧组合模型进行研究。首先结合BDS系统GEO卫星特性对模型进行重组,推导出理论稳定的DISB参数,然后分析DISB参数组成并介绍其应用方法,最后利用两组中基线数据进行验证分析。数据计算结果表明,伪距DISB参数在三天时间内稳定,载波DISB在一天时间有变化趋势,但不同日期总体变化趋势相似。在已知DISB参数情况下,紧组合模型相对松组合定位模型平面定位最大偏差由2.39cm减小至1.15cm,高程方向外符合精度从2.79cm减小至1.68cm,提升幅度为39.8%。更多还原

【Abstract】 Tight combination model is an important direction for multi-system GNSS data fusion.At present,research mainly focuses on short-baseline tight combination model.This paper research about the GPS/BDS medium-baseline tight combination model.First,the model was recombined with the characteristics of GEO satellites of the BDS system to derive theoretically stable DISB parameters.Then,the composition of the DISB parameters was analyzed and its application methods were introduced.Finally,the baseline data in the two groups were used for verification analysis.The results show that the pseudo-range DISB parameters are stable within three days,and the carrier DISB has a changing trend within one day,but the overall changing trend is similar on different days.With the known DISB parameters,the maximum deviation of the plane positioning of the tight combination model relative to the loose combination positioning model was reduced from 2.39 cm to 1.15 cm,and the accuracy of compliance was reduced from 2.79 cm to 1.68 cm,which was a 39.8% improvement.更多还原