摘要
分析了GNSS接收机天线相位中心与几何中心间的关系,提出了一种基于几何约束的GNSS接收机天线相位中心偏差的测量方法。通过2台或多台天线组合测量,利用天线几何中心在东北天坐标系下的已知坐标,仅需2个观测时段即可解算所有天线的相位中心水平偏差和相对垂直偏差。使用扼流圈天线进行不同观测时段长的相位中心稳定性分析实验;在不同天线组合、不同天线位置条件下,对相位中心偏差进行测量实验。实验结果表明:高精度的GNSS接收机天线相位中心偏差测量的观测时段长为24 h,天线的相位中心水平偏差重复性≤0.13 mm,相对垂直偏差重复性为0.67 mm。
By analyzing the relationship between the phase center and the geometric center of the GNSS receiver antenna,a measurement method for the phase center offset of GNSS receiver antenna based on geometric constraints was proposed.The method was measured by a combination of two or more antennas,using the known coordinates of the antenna geometric center in the east-north-top coordinate,the horizontal offset and relative vertical offset of the phase center of all antennas can be solved in only two observation periods.The phase center stability analysis experiment with different observation periods and the phase center offset measurement experiment under different antenna combinations and different antenna position conditions were carried out by using choke antennas.The experimental results show that the observation period of the high-precision GNSS receiver antenna phase center offset measurement is 24 h.The repeatability of the horizontal offset of the phase center of the antenna is not more than 0.13 mm,and the repeatability of the relative vertical offset is 0.67 mm.
作者
李晶晶
李连福
王德利
曾九孙
蔡晋辉
缪东晶
李建双
LI Jing-jing;LI Lian-fu;WANG De-li;ZENG Jiu-sun;CAI Jin-hui;MIAO Dong-jing;LI Jian-shuang(China Jiliang University,Hangzhou,Zhejiang 310018,China;National Institute of Metrology,Beijing 100029,China)
出处
《计量学报》
CSCD
北大核心
2023年第7期1121-1127,共7页
Acta Metrologica Sinica
基金
国家重点研发计划(2021YFF0600305)。
作者简介
第一作者:李晶晶(1994-),安徽亳州人,中国计量大学硕士研究生,主要研究方向为GNSS天线相位中心误差测量方法研究。Email:2787757232@qq.com;通讯作者:李建双(1966-),浙江余姚人,中国计量科学研究院研究员,博士,主要从事大长度计量研究工作。Email:lijiansh@nim.ac.cn。
