天地一体化信息网络2025，Vol.6Issue(2)：76-86,11.DOI:10.11959/j.issn.1000-0801.2025020
基于补偿和预测的低轨卫星频率同步方法
Frequency Tracking and Synchronization Strategy for Low Earth Orbit Satellites Based on Compensation and Prediction
摘要
Abstract
As an important supplement to the ground network,the low earth orbit(LEO)satellite network is an important component of the integrated network of space and earth.Due to the high moving speed of LEO satellites,a large Doppler frequency offset and its rate of change are caused,so a new frequency offset estimation strategy is needed in the initial access and link tracking process under the background of low earth orbit satellites.Based on this scenario,this paper first introduces the related signals of frequency synchroniza-tion,and proposes a compensation-based initial access and a PTRS signal-based frequency tracking strategy based on the characteristics of LEO satellites.The effectiveness of the proposed scheme is verified through simulation,this scheme provides a reference for the de-sign of LEO satellite communication system.关键词
低轨卫星/频率同步/初始接入/频率跟踪/神经网络Key words
LEO satellite/frequency synchronization/initial access/frequency tracking/neural network分类
信息技术与安全科学引用本文复制引用
段相龙,刘留,苏昭阳,蔡雨尘,高一博,尹毅,宁丽鹏..基于补偿和预测的低轨卫星频率同步方法[J].天地一体化信息网络,2025,6(2):76-86,11.基金项目
国家自然科学基金资助项目(No.62341102,No.62221001) The National Natural Science Foundation of China(No.62341102,No.62221001) （No.62341102,No.62221001）
