转发式测轨系统地面设备时延测量方法  

A Measurement Method of Ground Station Equipment Time Delay for Transfer Ranging System

作　　者：黄承强[1,2] 杨旭海[1,2,3] 成璇 李志刚[1,2] 李伟超[1,2] 曹芬[1,2] HUANG Cheng-qiang;YANG Xu-hai;CHENG Xuan;LI Zhi-gang;LI Wei-chao;CAO Fen(National Time Service Center,Chinese Academy of Sciences,Xi'an 710600,China;ey Laboratory of Precise Positioning and Timing Technology,Chinese Academy of Sciences,Xi'an 710600,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100012,China)

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院精密导航定位与定时技术重点实验室,西安710600 [3]中国科学院大学天文与空间科学学院,北京100012

出　　处：《导航定位与授时》2019年第1期81-86,共6页Navigation Positioning and Timing

基　　金：国家自然科学基金(41604026);国家自然科学基金面上资助项目(11173026)

摘　　要：受地面设备时延误差的影响,转发式测轨系统的卫星定轨精度受到严重制约。为实现卫星精密定轨,地面设备时延误差的精确补偿至关重要,因此需要对地面设备时延进行精确测量。采用一种外环设备时延测量方法,实现对转发式测轨系统地面设备时延的实时测量。经过试验验证和分析,结果表明地面设备时延测量稳定度优于0.3ns,修正地面设备时延误差后的卫星重叠弧段的轨道差RMS值优于2m。In transfer ranging system,the precision of satellite orbit determination is limited by the equipment time delay error of ground station.The accurate compensation of equipment time delay of ground station plays an important role in the precise satellite orbit determination.Thus the equipment time delay should be measured accurately.A method of outer loop equipment time delay measurement is introduced,which realizes the real-time measurement of ground station equipment time delay for transfer ranging system.By experiments and analysis,the results show that the accuracy of equipment time delay measurement can be better than 0.3 ns,meanwhile,the RMS value of the satellite overlap arc orbit difference can be better than 2 mafter compensating equipment time delay.

关 键 词：转发式测距 卫星模拟器 卫星定轨 设备时延 

分 类 号：TN98[电子电信—信息与通信工程]