Three-Dimensional Cooperative Localization via Space-Air-Ground Integrated Networks  

作　　者：Wenxuan Li Yuanpeng Liu Xiaoxiang Li Yuan Shen 

机构地区：[1]Department of Electronic Engineering,Tsinghua University,Beijing 100084,China [2]Beijing National Research Center for Information Science and Technology,Tsinghua University,Beijing 100084,China

出　　处：《China Communications》2022年第1期253-263,共11页中国通信（英文版）

摘　　要：The space-air-ground integrated network(SAGIN)combines the superiority of the satellite,aerial,and ground communications,which is envisioned to provide high-precision positioning ability as well as seamless connectivity in the 5G and Beyond 5G(B5G)systems.In this paper,we propose a three-dimensional SAGIN localization scheme for ground agents utilizing multi-source information from satellites,base stations and unmanned aerial vehicles(UAVs).Based on the designed scheme,we derive the positioning performance bound and establish a distributed maximum likelihood algorithm to jointly estimate the positions and clock offsets of ground agents.Simulation results demonstrate the validity of the SAGIN localization scheme and reveal the effects of the number of satellites,the number of base stations,the number of UAVs and clock noise on positioning performance.

关 键 词：space-air-ground integrated network(SAGIN) three-dimensional(3D)localization clock noise multi-source information 

分 类 号：TN929.5[电子电信—通信与信息系统]