GNSS-MR技术用于潮位变化监测分析

doi:10.11947/j.AGCS.2016.20150498

测绘学报 ›› 2016, Vol. 45 ›› Issue (9): 1042-1049.doi: 10.11947/j.AGCS.2016.20150498

GNSS-MR技术用于潮位变化监测分析

张双成, 南阳, 李振宇, 张勤, 戴凯阳, 赵迎辉

长安大学地质工程与测绘学院, 陕西西安 710054

收稿日期:2015-09-28 修回日期:2016-06-02 出版日期:2016-09-20 发布日期:2016-09-29
通讯作者: 南阳 E-mail:nanyangchd@163.com
作者简介:张双成(1979-),男,博士,讲师,研究方向为GNSS地球动力学及地表环境监测.E-mail:shuangcheng369@vip.163.com
基金资助:
国家自然科学基金（41104019；41274005）

Analysis of Tide Variation Monitored by GNSS-MR

ZHANG Shuangcheng, NAN Yang, LI Zhenyu, ZHANG Qin, DAI Kaiyang, ZHAO Yinghui

College of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, China

Received:2015-09-28 Revised:2016-06-02 Online:2016-09-20 Published:2016-09-29
Supported by:
The National Natural Science Foundation of China(Nos.41104019;41274005)

摘要/Abstract

摘要： 潮位变化的高精度监测一直是全球海平面观测系统、海洋环流和全球气候变化研究领域关注的热点问题之一。随着GNSS研究与应用的不断深入，近年来基于多路径效应的GNSS-MR技术已逐步成为一种新兴的遥感手段，即利用测量型GNSS站进行地表环境（植被、土壤湿度、雪深、潮位、火山活动等）监测。通过分析由多路径引起岸基GNSS站SNR值的变化特性，本文给出了基于SNR观测值的GNSS-MR技术监测潮位变化的反演原理。利用布设在美国华盛顿州Friday Harbor海港岸边的CORS站SC02实测观测数据对潮位变化监测进行了反演分析，并与该站相距359m的验潮站数据进行了对比分析，两者较差均值约为10cm左右，两者的相关系数均优于0.98。试验结果分析表明基于岸基CORS站的GNSS-MR技术在一定程度上可用于实时、连续的潮位变化监测，同时也说明岸基CORS站在一定程度上可作为验潮站的补充，进一步拓展GNSS在海洋遥感领域的应用范围。

关键词: 全球导航卫星系统, GNSS多路径反射, 信噪比, 潮位变化

Abstract: Precise monitoring of tide variation is the most of issues in the fields of Global Sea-level Observation System, ocean circulation and global climate change research. With the deepening research and rapid application of GNSS, GNSS-MR based on multipath has gradually become a new means of remote sensing for ground environment (vegetation, soil moisture, snow depth, sea level, volcano and so on) with geodetic GNSS station. By analyzing the characteristics of the onshore GNSS SNR data which is caused by multipath, the inversion principle of GNSS-MR technology based on the SNR data to detect tide variation is given in this paper. The onshore GNSS station of SC02 which is located in Friday Harbor, Washington state of United States, are used to retrieve tide variation. The retrieval result is consistent with the tide gauge which is only 359m to the GNSS station. The bias is about 10cm, and the correlation coefficient is better than 0.98. Preliminary results show that GNSS-MR technology based on onshore CORS station to some extent could be real-time and continuously used to monitor the tide variation. What's more, onshore GNSS stations could be a powerful supplement for tide gauge and be used to extend GNSS application in marine remote sensing field.

Key words: GNSS, GNSS multipath reflectometry, SNR, tide variation

中图分类号:

P228.42

张双成, 南阳, 李振宇, 张勤, 戴凯阳, 赵迎辉. GNSS-MR技术用于潮位变化监测分析[J]. 测绘学报, 2016, 45(9): 1042-1049.

ZHANG Shuangcheng, NAN Yang, LI Zhenyu, ZHANG Qin, DAI Kaiyang, ZHAO Yinghui. Analysis of Tide Variation Monitored by GNSS-MR[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(9): 1042-1049.

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GNSS-MR技术用于潮位变化监测分析

Analysis of Tide Variation Monitored by GNSS-MR

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