摘要
针对全球卫星导航系统服务(international global navigation satellite system service,IGS)发布的实时产品以及IGS跟踪站装备着高性能原子钟的现状,根据站钟的高稳定的特性,在实时精密单点定位(precise point positioning,PPP)数据处理过程中,对接收机钟差参数建立历元间约束模型。试验选取5个IGS站连续21天观测数据,并接收法国国家太空研究中心发布的实时精密产品,用于分析历元间约束模型对实时GPS PPP动态定位的影响。结果表明,历元间约束的钟模型能够有效提高全球卫星导航系统高程分量的精度,提高程度可达23.16%。
In view of the current real-time products released by international global navigation satellite system service(IGS)and the status of high-performance atomic clocks in many IGS tracking stations,and according to the high stability characteristics of the station clock,in the real-time precise point positioning(PPP)data processing process,an inter-element constraint model is established for the receiver clock error parameter.The experiment selected 5 IGS stations for observation data of 21 consecutive days,and received real-time precision products released by the Centre National d’Etudes Spatiales in France to analyze the impact of the inter-element constraint model on real-time GPS PPP dynamic positioning.The experimental results show that,the clock model constrained between the epochs can effectively improve the accuracy of the global navigation satellite system elevation component,and the degree of improvement can reach 23.16%.
作者
芈小龙
向敏
MI Xiaolong;XIAN Min(Naval Equipment Department,Beijing 100481,China)
出处
《西安邮电大学学报》
2019年第4期16-20,共5页
Journal of Xi’an University of Posts and Telecommunications
基金
国家自然科学基金资助项目(11703030)
