国际卫星无线电导航系统（空对地）用频现状和未来趋势分析

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中图分类号：TN96；TN98 文献标志码：A 文章编码：1672-7274（2025）11-0180-04

Current Status and Future Trend Analysis of Frequency Usage for International Radionavigation-Satellite Systems （Space-to-Earth）

SUNJunjie，DONG Qifeng （The State Radio_monitoring_center TestingCenter，Beijing10oo41，China）

Abstract：As a core infrastructure of the modern information society，the Radionavigation-Satelite Service （RNSS）relies criticallyon its frequency planningand technological evolution for the global Positioning，Navigation， and Timing （PNT） system.This paper systematically sorts out the current status of RNSS （Space-to-earth） frequency usage rules，conducts a detailed analysis of the space segmentcompositionand downlink frequencycharacteristicsof internationalradionavigation-satelitesystems suchas theGlobal Positioning System （GPS），Galileo，and GLONASS， and reveals the overlapping usage mechanism of core frequency bands like the L-Band and the advantages of compatibility design.This paper can provide references for the frequency usage designand technological innovationof global navigation systems.

Keywords： radionavigation-satelite system; low-orbit navigation; frequency; L-band; 5 GHz band

0 引言

卫星无线电导航业务（RNSS）系统服务于各类关键领域，为通信、交通、能源等提供精准的定位、导航和授时（PNT）功能的支撑。（剩余5835字）