摘要
针对不同太阳光压模型在北斗三号MEO卫星定轨中适用性不同的问题,借助全球卫星导航系统数据对ECOM1-9模型、ECOM1-5模型、ECOM2模型、ECOMC模型在北斗三号MEO卫星中的适用性进行了分析,并分别采用国际激光测距服务中心提供的卫星激光测距数据、重叠弧段数据进行内外符合精度评估。结果表明,采用ECOMC模型定轨时,不同北斗三号MEO卫星内外符合精度均最佳,外符合精度最佳时,RMSE为3.3 cm,STD为3.0 cm。与ECOM1-9模型、ECOM1-5模型、ECOM2模型相比,ECOMC模型定轨内符合精度在径向分别提升了39.54%、16.84%、12.55%;在切向分别提升了51.33%、27.43%、10.46%;在法向分别提升了48.99%、21.42%、11.22%。
In view of the different applicability of different optical pressure models in BDS-3 MEO satellite orbit determination,we analyzed the applicability of ECOM1-9 model,ECOM 1-5 model,ECOM 2 model and ECOMC model in BDS-3 MEO satellite with the help of global navigation satellite system data,and evaluated the internal and external coincidence accuracy with satellite laser ranging data and overlapping arc data provided by international laser ranging service center.The results show that when the ECOMC model is used for orbit determination,the internal and external coincidence accuracy of different BDS-3 MEO satellites are the best.When the external coincidence accuracy is the best,the RMSE value is 3.3 cm and the STD value is 3.0 cm.Compared with ECOM1-9 model,ECOM1-5 model and ECOM2 model,the internal coincidence accuracy of ECOMC model is improved by 39.54%,16.84%and 12.55%respectively in radial direction.In the tangential direction,it is improved by 51.33%,27.43%and 10.46%respectively.In the normal direction,it is improved by 48.99%,21.42%and 11.22%respectively.
作者
孙燕
杨鹏森
SUN Yan;YANG Pengsen(Yantai Land Reserve and Utilization Center,Yantai 264000,China)
出处
《地理空间信息》
2023年第5期99-101,共3页
Geospatial Information
基金
山东省自然科学基金资助项目(ZR2017MD029)。
关键词
北斗三号
定轨
太阳光压
全球卫星导航系统
适用性
BDS-3
orbit determination
optical pressure
global navigation satellite system
applicability
