Precise time scales and navigation systems:mutual benefits of timekeeping and positioning

作     者：Patrizia Tavella Gérard Petit 

作者机构：Bureau International des Poids et MesuresPavillon de Breteuil92312 Sèvres CedexFrance 

出 版 物：《Satellite Navigation》 (卫星导航（英文）)

年 卷 期：2020年第1卷第1期

页      面：101-112页

核心收录：

学科分类：08[工学] 080401[工学-精密仪器及机械] 081105[工学-导航、制导与控制] 0804[工学-仪器科学与技术] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程] 

基　　金：BIPM Time Department 

主　　题：Atomic clock Time scale Time measurement Navigation Timekeeping UTC 

摘      要：The relationship and the mutual benefits of timekeeping and Global Navigation Satellite Systems(GNSS)are reviewed,showing how each field has been enriched and will continue to progress,based on the progress of the other *** role of GNSSs in the calculation of Coordinated Universal Time(UTC),as well as the capacity of GNSSs to provide UTC time dissemination services are described,leading now to a time transfer accuracy of the order of 1-2 *** addition,the fundamental role of atomic clocks in the GNSS positioning is *** paper presents a review of the current use of GNSS in the international timekeeping system,as well as illustrating the role of GNSS in disseminating time,and use the time and frequency metrology as fundamentals in the navigation service.