全球定位系统2025，Vol.50Issue(2)：38-45,8.DOI:10.12265/j.gnss.2025001
基于多天线BDS-R水位测量方法
BDS-R water level measurement method based on multi-antenna
摘要
Abstract
Global Navigation Satellite System Reflectometry(GNSS-R)technology is a new type of water level measurement that has the advantages of all-weather,all-time and high temporal resolution compared to traditional water level measurement methods.However,GNSS-R based on geodetic receivers has high installation and operation and maintenance costs,which restricts its large-scale application.To address this problem,this paper develops a multi-antenna array method for BeiDou Navigation Satellite System Reflectometry(BDS-R)water level measurement.The method consists of four low-cost antennas arranged at equal intervals to form a multi-antenna array,which is placed near water for monitoring,and then the collected BeiDou satellite data are processed to obtain the water level changes.The experimental results show that the low-cost device can effectively use data from a wider range of elevation angles,and the accuracy of a single antenna is in the range of 1.2～2.2 cm.By fusing the inversion results of the four antennas,the water level accuracy reaches 1.1 cm,an improvement of about 50%.This research result not only verifies the feasibility of the multi-antenna array water level measurement method,but also highlights the superior performance of BDS-R technology in the field of water level monitoring.关键词
北斗卫星导航系统反射测量(BDS-R)/水位测量/逆向建模/低成本/多天线Key words
BDS-R/water level measurement/inverse modeling/low-cost/multi-antenna分类
测绘与仪器引用本文复制引用
张光霁,匡翠林,李冰芳,付垚,陈春花..基于多天线BDS-R水位测量方法[J].全球定位系统,2025,50(2):38-45,8.基金项目
中国水利水电科学研究院"揭榜挂帅"专项(9002241) （9002241）
湖南省重点研发计划(2023GK2056) （2023GK2056）
