天地一体化信息网络2024，Vol.5Issue(3)：35-43,9.DOI:10.11959/j.issn.2096-8930.2024026
基于NTN的手机直连卫星定位技术
Non-Terrestrial Network Based Positioning Technologies for Direct-to-Satellite Service
摘要
Abstract
With the rapid evolution of wireless communication technologies,positioning technologies are undergoing a transformation from dedicated navigation satellite systems towards communication system-assisted positioning and even standalone positioning.The International Telecommunication Union's 3GPP,since Release 18,has embarked on researching 5G Non-Terrestrial Network(NTN)po-sitioning technologies,fostering the integration of communication and navigation.Considering the limited visibility of satellites to ter-minals,the primary focus of current 3GPP research lies in single-satellite positioning technology,which suffers from drawbacks such as slow convergence and low accuracy.However,with the emergence of low-Earth orbit mega-constellations,terminals will access to an increasing number of visible satellites in the future,rendering multi-satellite positioning feasible.Compared to single-satellite position-ing,multi-satellite positioning offers advantages such as faster convergence,improved geometric configurations and higher accuracy.This paper delves into the research of positioning technologies for Direct-to-Satellite Service(D2SS)within the 5G NTN framework,proposing various multi-satellite positioning algorithms,analyzing the critical factors influencing positioning performance,and conduct-ing simulation assessments of positioning performance.关键词
通信导航一体化/多星定位/TDOA/Multi-RTT/多普勒定位Key words
navigation-communication integration/multi-satellite positioning/TDOA/Multi-RTT/Doppler-based positioning分类
信息技术与安全科学引用本文复制引用
孙晓南,周世东,康绍莉..基于NTN的手机直连卫星定位技术[J].天地一体化信息网络,2024,5(3):35-43,9.基金项目
国家重点研发计划资助项目(No.2022YFB2902600) National Key Research&Development Program of China(No.2022YFB2902600) （No.2022YFB2902600）
