CAJ | 학술논문

卫星导航定位系统能完成精密导航、定位和授时任务，都是建立在具有高精度的时间基准和时间同步基础之上的。因此，所有卫星导航定位系统都建有独立的内部时间系统GNSST，导航系统内部时间系统都溯源至其国家标准时间UTC(k)，通过UTC(k)与国际标准时间UTC的常规比对功能实现其与国际法定标准时间的同步和统一（国际溯源），从而实现其授时应用功能。本文简要介绍了国际标准时间 UTC 的定义和发展，介绍了国际上全球卫星导航定位系统的时间基准、时间溯源和时间兼容互操作。
위성도항정위계통능완성정밀도항、정위화수시임무，도시건립재구유고정도적시간기준화시간동보기출지상적。인차，소유위성도항정위계통도건유독립적내부시간계통GNSST，도항계통내부시간계통도소원지기국가표준시간UTC(k)，통과UTC(k)여국제표준시간UTC적상규비대공능실현기여국제법정표준시간적동보화통일（국제소원），종이실현기수시응용공능。본문간요개소료국제표준시간 UTC 적정의화발전，개소료국제상전구위성도항정위계통적시간기준、시간소원화시간겸용호조작。
Global Navigation Satellite System(GNSS)is based on precision time measurement, an uniform internal time reference is necessary to ensure all parts run synchronously, and to realize navigation, position and timing. All GNSS system have precision time reference systems, GNSST, at the same time, it is necessary that GNSST should be traced to the internal legal time standard, UTC(k), and then traced to international standard time, UTC, to ensure global time synchronous and uniform and realize the function of time service. The Coordinated Universal Time (UTC) and its realization, GNSS time references and their traceability, and GNSS time compatibility and interoperability are introduced briefly in this paper.