基于星链信标信号的多普勒定位方法与实验  

Doppler positioning method and experiment based on Starlink beacon signal

作　　者：袁祎平 易建新[1] 万显荣[1] 郝才勇 YUAN Yiping;YI Jianxin;WAN Xianrong;HAO Caiyong(School of Electronic Information,Wuhan University,Wuhan 430072,China;Shenzhen Monitoring Station,The State Radio Monitoring Center,Shenzhen 518000,China)

机构地区：[1]武汉大学电子信息学院,湖北武汉430072 [2]国家无线电监测中心深圳监测站,广东深圳518000

出　　处：《系统工程与电子技术》2024年第8期2535-2545,共11页Systems Engineering and Electronics

基　　金：国家自然科学基金(61931015,62071335,62250024);湖北省自然科学基金创新群体(2021CFA002);中央高校自主科研项目(2042022dx0001)资助课题。

摘　　要：未来十年全球将陆续发射数以万计的近地轨道卫星,组成巨型星座,这将为定位导航应用提供大量不同频段、带宽和制式的机会信号。为了便于利用卫星机会信号,设计一种轻量级模块化的通用型接收设备,率先观测到星链卫星下行信号频道间间隔中心处的信标信号(11.95 GHz/12.45 GHz)。基于该信标信号提出多普勒提取和定位方法,并开展外场实验,接收获得6颗星链卫星的信号,利用其实现接收站定位。接收机的三维定位误差为28.9 m,水平定位误差为11.8 m,验证了星链信标信号用于多普勒定位的实际有效性。In the next decade,tens of thousands of low Earth orbit(LEO)satellites will be launched around the world to form a mega constellation,which will provide a large number of opportunity signals of different frequency bands,bandwidths and formats for positioning and navigation applications.In order to facilitate the use of satellite opportunity signals,a lightweight modular universal receiving device is designed,which firstly observe the beacon signal at the center of the interval(11.95 GHz/12.45 GHz)between the downlink signal channels of the Starlink satellite.Based on the beacon signal,a Doppler extraction and positioning method is proposed.Then field experiments are carried out,in which the signals of six Starlink satellites are acquired and the receiving station is positioned using these signals.The receiving device’s three-dimenaional(3D)positioning error is 28.9 m and horizontal positioning error is 11.8 m,which demonstrates the practical effectiveness of Doppler positioning based on Starlink beacon signals.

关 键 词：低轨卫星 星链 信标信号 多普勒提取 多普勒定位 

分 类 号：TN967.1[电子电信—信号与信息处理] TN967.1[电子电信—信息与通信工程]