第11卷第1期导航定位学报Vol.11，No.12023年2月JournalofNavigationandPositioningFeb.，2023引文格式：秦红磊，张宇.星链机会信号定位方法[J].导航定位学报,2023,11(1):67-73.（QINHonglei,ZHANGYu.Positioningtechnologybasedonstarlinksignalofopportunity[J].JournalofNavigationandPositioning,2023,11(1):67-73.）DOI:10.16547/j.cnki.10-1096.20230110.星链机会信号定位方法秦红磊，张宇（北京航空航天大学电子信息工程学院,北京100083）摘要：为了有效克服利用传统低轨星座卫星定位的缺点，提出一种星链机会信号定位方法：通过实测数据对星链导频信号进行分析；利用星链11.325GHz和11.575GHz频点信号实现星链双频导频信号瞬时多普勒频率提取，并建立瞬时多普勒定位数学模型。实验结果表明：在观测时长小于5min的情况下，可以实现优于15m的二维定位精度；该方法在保持同等定位精度的情况下可有效降低观测时长，提高定位效率。关键词：机会信号；低轨卫星；星链；天基；瞬时多普勒定位中图分类号：P228.1；TN967.1文献标志码：A文章编号：2095-4999(2023)01-0067-07PositioningtechnologybasedonstarlinksignalofopportunityQINHonglei,ZHANGYu（SchoolofElectronicandInformationEngineering,BeijingUniversityofAeronauticsandAstronautics,Beijing100083,China）Abstract：Inordertoefficientlyovercometheshortcomingsoftraditionallow-orbitconstellationsatellitepositioning,thepaperproposedapositioningmethodbasedonstarlinksignalofopportunity:thecharacteristicsofstarlinksignalwasanalyzed;theinstantaneousDopplerfrequencyextractionofstarlinkdual-frequencypilotsignalwasrealizedbyusingthefrequencypointsignalsofstarlink11.325GHzand11.575GHz;andthemathematicalmodelofinstantaneousDopplerpositioningwasestablished.Experimentalresultshowedthatthetwodimensionalpositioningaccuracycouldbebetterthan15mwithintheobservationtimeoflessthan5min;theproposedmethodcouldeffectivelyreducetheobservationtimeandimprovethepositioningefficiencywhilemaintainingthesamepositioningaccuracy.Keywords:signalofopportunity;lowEarthorbitsatellite;starlink;space-based;instantaneousDopplerpositioning0引言随着全球卫星导航系统（globalnavigationsatellitesystem,GNSS）应用的发展，GNSS正在成为一个国家信息...
