Research on GNSS-R sea surface altimetry status and common methods
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摘要: 全球卫星导航系统(GNSS)不仅具有导航定位、测速以及授时等功能,且因其反射信号能被接收,可用于海面风场、海面高度反演,由此开辟了一个新的研究领域GNSS反射(GNSS-R)技术,GNSS-R技术用于海洋遥感是一个新的研究领域;文中主要介绍了GNSS-R遥感技术和海面测高的研究进展,并从基于信噪比(SNR)数据测量法、基于 C/A码相位测量法、基于载波相位测量法及基于载波频率测量法等方面分析和总结了GNSS-R在海面高度测量的常用方法.Abstract: The Global Navigation Satellite System (GNSS) is not only used for navigation, positioning, speed measurement, and timing, etc. It can also be used for sea surface wind field and sea surface altitude retrieval since its reflected signals can also be received. Global Navigation Satellite System-Reflection (GNSS-R) is a new research area for marine remote sensing. The GNSS-R technology has many signal sources with wide coverage and stable long-term operation. This article mainly introduces the research progress of GNSS-R marine remote sensing technology and sea surface altimetry, and it ranges from signal-to-noise ratio (SNR) data measurement method, C/A code phase measurement method, carrier phase measurement method, and carrierbased measurement method. The common methods of GNSS-R in sea level measurement are analyed and summarized .
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Key words:
- GNSS /
- GNSS-R /
- marine remote sensing /
- sea surface altimetry /
- SNR
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