全球定位系统2025，Vol.50Issue(2)：109-117,9.DOI:10.12265/j.gnss.2024211
基于线性调频的低轨导航信号波形综述
Study on signal waveforms of LEO satellite based on linear frequency modulation
摘要
Abstract
In order to enhance the performance of low earth orbit(LEO)satellite service,this paper reviews the current research status of LEO signal waveforms,which compares and analyzes the structure of LEO satellite signals based on linear frequency modulation(LFM),and investigates their multiple access implementation and parameter estimation methods.The design approach utilizing LFM signals modulated by pseudo random spread spectrum codes represents an effective signal combination method.Based on this,the performance of multiple access and the accuracy of parameter estimation can be significantly improved.关键词
低地球轨道(LEO)卫星/信号波形/线性调频(LFM)/多址/参数估计Key words
low earth orbit(LEO)satellite/signal waveforms/linear frequency modulation(LFM)/multiple access/parameter estimation分类
天文与地球科学引用本文复制引用
耿敏嫣,林红磊,唐小妹,孙鹏跃,刘哲..基于线性调频的低轨导航信号波形综述[J].全球定位系统,2025,50(2):109-117,9.基金项目
国家自然科学基金(U20A20193,62201585) （U20A20193,62201585）
