GNSS-R open-loop difference phase altimetry: Results from a bridge experiment

	GNSS-R open-loop difference phase altimetry: Results from a bridge experiment
	Bai, Weihua; Sun, Yueqiang; Fu, Yang; Zhu, Guangwu; Du, Qifei; Zhang, Yong; Han, Ying; Cheng, Cheng
刊名	ADVANCES IN SPACE RESEARCH
	2012
卷号	50 期号:8 页码:1150-1157
关键词	GNSS-R Altimetry Open-loop difference phase altimetry
ISSN号	0273-1177
通讯作者	Sun, YQ (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
中文摘要	The paper explores a method to obtain accurate lake surface heights using measurements of the Global Navigation Satellite System (GNSS) carrier phase reflected from the lake surface. The method is referred to as Global Navigation Satellite System-Reflection (GNSSR) open-loop difference phase altimetry method. It consists of two key technologies: one is the open-loop tracking method to track the GNSS-R signals, where the direct GNSS signal's frequency is used as a reference frequency to obtain the carrier phases of the GNSS-R signals; the other key technology is time difference phase altimetry method to invert the lake surface heights using two or more carrier phases of GNSS-R signals received simultaneously. A validation experiment is carried out on the SANYING bridge over GUANTING lake using a GNSS-R receiver developed by the Center for Space Science and Applied Research (CSSAR), processing the data with GNSS-R open-loop difference phase altimetry method. The lake surface height results are consistent with the height results of GPS dual-frequency differential positioning altimetry. The results show that we can achieve centimeter level height in one minute average, by using 11 minutes carrier phase data of three GNSS-R signals received simultaneously. (C) 2011 COSPAR. Published by Elsevier Ltd. All rights reserved.
英文摘要	The paper explores a method to obtain accurate lake surface heights using measurements of the Global Navigation Satellite System (GNSS) carrier phase reflected from the lake surface. The method is referred to as Global Navigation Satellite System-Reflection (GNSSR) open-loop difference phase altimetry method. It consists of two key technologies: one is the open-loop tracking method to track the GNSS-R signals, where the direct GNSS signal's frequency is used as a reference frequency to obtain the carrier phases of the GNSS-R signals; the other key technology is time difference phase altimetry method to invert the lake surface heights using two or more carrier phases of GNSS-R signals received simultaneously. A validation experiment is carried out on the SANYING bridge over GUANTING lake using a GNSS-R receiver developed by the Center for Space Science and Applied Research (CSSAR), processing the data with GNSS-R open-loop difference phase altimetry method. The lake surface height results are consistent with the height results of GPS dual-frequency differential positioning altimetry. The results show that we can achieve centimeter level height in one minute average, by using 11 minutes carrier phase data of three GNSS-R signals received simultaneously. (C) 2011 COSPAR. Published by Elsevier Ltd. All rights reserved.
学科主题	空间环境
收录类别	SCI ; EI
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/2935]
专题	国家空间科学中心_空间环境部
推荐引用方式 GB/T 7714	Bai, Weihua,Sun, Yueqiang,Fu, Yang,et al. GNSS-R open-loop difference phase altimetry: Results from a bridge experiment[J]. ADVANCES IN SPACE RESEARCH,2012,50(8):1150-1157.
APA	Bai, Weihua.,Sun, Yueqiang.,Fu, Yang.,Zhu, Guangwu.,Du, Qifei.,...&Cheng, Cheng.(2012).GNSS-R open-loop difference phase altimetry: Results from a bridge experiment.ADVANCES IN SPACE RESEARCH,50(8),1150-1157.
MLA	Bai, Weihua,et al."GNSS-R open-loop difference phase altimetry: Results from a bridge experiment".ADVANCES IN SPACE RESEARCH 50.8(2012):1150-1157.