日界不连续误差对GNSS载波相位频率传递的影响  

Influence of Day-Boundary Discontinuities on GNSS Carrier Phase Frequency Transfer

作　　者：张向波[1,2] 郭际 胡永辉[1,2,3] 赵当丽 武建锋[1,2,3] ZHANG Xiangbo;GUO Ji;HU Yonghui;ZHAO Dangli;WU Jianfeng(National Time Service Center,CAS,3 East-Shuyuan Road,Xi’an 710600,China;University of Chinese Academy of Sciences,A19 Yuquan Road,Beijing 100049,China;Key Laboratory of Time and Frequency Primary Standards,CAS,3 East-Shuyuan Road,Xi’an 710600,China)

机构地区：[1]中国科学院国家授时中心,西安市710600 [2]中国科学院大学,北京市100049 [3]中国科学院时间频率基准重点实验室,西安市710600

出　　处：《大地测量与地球动力学》2022年第4期371-377,共7页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(12073034);中国科学院国家授时中心“青年创新人才”基金(Y917SC1S05)。

摘　　要：为分析日界不连续误差对GNSS载波相位频率传递的影响,采用MGEX/BIPM并址站10 d的GPS/BDS观测数据进行PPP测站钟差解算,在分析测站钟差估计结果日界不连续误差统计特性的基础上,从理论分析和实验验证两方面研究日界不连续误差对两地时钟相对频率偏差估计的影响。结果表明,日界不连续误差基本服从高斯分布,导致两地时钟相对频率偏差估计结果在相邻批单元边界处出现偏移,难以准确估计总时段中相对频率偏差,严重影响两地时钟频率比对结果。In order to analyze the effect of day-boundary discontinuities on GNSS carrier phase frequency transfer,PPP station clock offsets are estimated based on 10 days of GPS and BDS observations from co-location sites of multi-GNSS experiment(MGEX)and BIPM.On the basis of analyzing the statistical characteristics of day-boundary discontinuities of clock offset estimation results,we study the influence of day-boundary discontinuities on the estimation of relative frequency deviation between two clocks from the aspects of theoretical analysis and experimental verification.The results show that the day-boundary discontinuities are in accordance with Gaussian distribution,causing the jumps of relative frequency deviation at the boundary epochs of two clocks,making it difficult to accurately estimate the relative frequency deviation in the total period,seriously affect the clock frequency comparison results.

关 键 词：GNSS PPP 载波相位时间传递 日界不连续 相对频率偏差 

分 类 号：P228[天文地球—大地测量学与测量工程]