海洋预报2017，Vol.34Issue(3)：26-31,6.DOI:10.11737/j.issn.1003-0239.2017.03.004
基于GNSS信号信噪比观测量的海平面高度变化研究
Study on sea level changes based on the observations of GPS signal to noise ratio
摘要
Abstract
The mathematical model of sea level altimetry based on GNSS signal carrier observables and the SNR is established,and the relation of two methods is studied in this paper.The scheme of sea level changes monitoring using inexpensive GPS receiver and off-shelf antenna is designed.Sea level monitoring experiment is conducted and the results of GPS measurement are compared with tide gauge data.The results show that centimeter accuracy of sea level changes can be archived using ordinary GPS receiver and antenna.The results of the 24 hours experiment show that the RMS error is 4.13 cm.The correlation coefficient of GPS altimeter and tide gauge measurements is 0.86.The GPS altimeter can obtain similar accuracy compared with the results of geodetic receiver equipped with a GPS antenna with a choke spherical equivalent protective cover.This indicates that the GPS altimeter can be used for future actual sea level forecasting.关键词
GPS/信噪比/海平面高度/卫星导航Key words
GPS/signal to noise ratio/sea water level/satellite navigation分类
天文与地球科学引用本文复制引用
胡媛,刘卫,周悦,王一津,俞子恒..基于GNSS信号信噪比观测量的海平面高度变化研究[J].海洋预报,2017,34(3):26-31,6.基金项目
国家自然科学基金(41506112,61304230) （41506112,61304230）
上海教委科研创新项目(14YZ106,14YZ121) （14YZ106,14YZ121）
上海海洋大学海燕计划(A2_0209_14_200063). （A2_0209_14_200063）
