Research on Alternative GNSS Methods for UAV Pseudolite Networking  

作　　者：YANG Fan LIU Yuhan 

机构地区：[1]College of Space Information,Space Engineering University,Beijing 101416,China [2]National Key Lab of Space Target Awareness,Beijing 101416,China

出　　处：《Journal of Geodesy and Geoinformation Science》2025年第1期89-99,共11页测绘学报(英文版)

基　　金：National Social Science Fund of China(No.2023-SKJJ-B-069).

摘　　要：In GNSS denied environments,pseudolites have to rely on prior information,such as ground anchoring points,terrain matching or other multi-source means for positioning.This paper proposes a method of dynamic networking of UAVs pseudolites for accurate navigation with only inertial navigation during GNSS denied area,which can provide accurate positioning services without prior information like anchor points.On this basis,this paper proposes a mathematical model of UAV pseudolite networking to describe the relationship of UAV flight altitude,network service coverage and anti-jamming capabilities.This model demonstrates excellent anti-interference ability,which can achieve a maximum power enhancement of up to 54.58 dB.And it can also offer another operating mode with a maximum coverage range of up to 2675.47 km^(2),while still ensuring a power enhancement of 37.57dB.This method can effectively solve the problem of providing continuous positioning services as an alternative GNSS,and is also a powerful support solution for resilient Positioning,Navigation,and Timing(PNT)^([1]).

关 键 词：GNSS denied PSEUDOLITE continuous positioning service power enhancement 

分 类 号：P228[天文地球—大地测量学与测量工程]