天地一体化信息网络2024，Vol.5Issue(1)：84-94,11.DOI:10.11959/j.issn.2096-8930.2024009
大规模低轨星座多普勒定位算法
Doppler Positioning Performance of LEO Mega Constellation
摘要
Abstract
This paper proposed a Doppler-only point-solution algorithm and analyzed the Doppler positioning performance based on the Starlink constellation.The Doppler positioning accuracy was about 3～6 m.To achieve the meter-level positioning accuracy,the satel-lite position and velocity errors should be within several meters and several centimeters per second,respectively.The ionospheric delay rates of C-band signal would cause about 2 m error in Doppler positioning.The positioning error would increase by dozens of meters if there were no corrections for the tropospheric errors.To ensure convergence in the LEO-based Doppler positioning,the initial receiver position error should be less than 300 km when the satellites orbit at an altitude of 550 km.关键词
定位导航授时/低轨卫星互联网星座/多普勒定位/电离层误差/对流层误差Key words
positioning/navigation and timing/broadband LEO constellations/Doppler positioning/ionospheric delay rates/tropo-spheric delay rates分类
天文与地球科学引用本文复制引用
张雨露,李桢,施闯,景贵飞..大规模低轨星座多普勒定位算法[J].天地一体化信息网络,2024,5(1):84-94,11.基金项目
国家自然科学基金资助项目(No.41931075,No.42204033) （No.41931075,No.42204033）
中央高校基本科研业务费项目(YWF-23-JC-12)The National Natural Science Foundation of China(No.41931075,No.42204033),The Fundamental Research Funds for the Central Universities(YWF-23-JC-12) （YWF-23-JC-12）
