基于GPS信噪比数据观测海平面变化研究  

The Research on Sea Level Change Based on GPS SNR Data

作　　者：匡翠林[1] 刘凯 周要宗 KUANG Cuilin;LIU Kai;ZHOU Yaozong(School of Geosciences and Info-Physics,Central South University,Changsha 410083,China)

机构地区：[1]中南大学地球科学与信息物理学院,湖南长沙410083

出　　处：《海洋测绘》2018年第6期37-40,共4页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41774040)

摘　　要：近年来,GPS-R技术已发展成为一项监测地球环境变化的新技术。首先推导了GPS-R技术观测海平面变化的原理公式,接着描述了利用GPS信噪比(SNR)数据反演水位变化的处理流程,最后利用IGS站SC02的数据,基于自主研发的数据分析软件,反演了该站长达14年的海平面变化时间序列。通过与该站附近的验潮站数据进行对比,两者表现出很好的一致性,相关系数高达0. 96,两者较差的RMS为8cm。研究结果进一步验证了基于GPS信噪比数据监测海平面变化的可行性和可靠性。In recent years,GPS-R technology has developed into a new technology of monitoring the change of earth environment.Firstly,the formulas of GPS-R measuring the sea level changes are derived,then the data processing flow is described.Finally,we obtain sea level time series of 14 years by processing the GNSS data of SC02 station based on the self-development software.Comparing with the data independently observed from tide gauge near this station,they have good consistency,the correlation coefficient is better than 0.96,and the RMS is 8cm.The experiment results further verify the feasibility and reliability of monitoring sea level changes based on GPS SNR.

关 键 词：GPS-R 信噪比 海平面变化 验潮站 Lomb-Scargle谱分析 

分 类 号：P228.4[天文地球—大地测量学与测量工程]