典型水循环参数星载GNSS-R/SoOP-R遥感探测的研究现状
A Review of GNSS-R/SoOP-R for Essential Hydrological Climate Variables Detection
吴学睿 1宋少辉 2马文骁 1郭鹏 1胡小工 1严哲3
作者信息
- 1. 中国科学院上海天文台天文地球动力学研究中心,上海,200030
- 2. 南京信息工程大学遥感与测绘工程学院,江苏 南京,210044
- 3. 南京大学学科服务部,江苏 南京,210093
- 折叠
摘要
全球导航卫星系统反射测量(global navigation satellite system-reflectometry,GNSS-R)技术是利用导航卫星的反射信号进行遥感的一种新兴的对地观测方式,其在海洋领域的研究相对较早和成熟,但是近年来随着星载探测计划的发展,如英国的TechDemoSat-1、美国的旋风全球导航卫星系统(cyclone GNSS,CYGNSS)以及中国的风云三号E星,其在陆地领域遥感研究的优势和潜质已经逐步显现.首先,总结了 目前机理模型的研究现状;然后,回顾了星载GNSS-R及其他机会卫星反射信号遥感(signal of opportunity reflection remote sensing,SoOP-R)的典型陆面水循环参数的研究现状,以及GNSS-R技术在土壤水分、植被、地表冻融监测上的应用,并梳理了最新SoOP-R技术在根区土壤水分和雪水当量的研究现状;最后,总结了 目前在前向机理模型研究和后续反演算法开发中存在的潜在问题,以期在一定程度上推动该项技术在水循环主要气候气象参数探测的发展.
Abstract
Global navigation satellite system-reflectometry(GNSS-R)is a kind of promising remote sensing technique,which utilizes the reflected signals of GNSS for geophysical parameters detection.Its applica-tions on ocean surface are earlier and more mature.However,in recent years,with the development of spaceborne satellite exploration programs such as TechDemoSat-1,cyclone GNSS(CYGNSS)and Fengyun 3E,its advantages and potential in land remote sensing research have gradually emerged.The re-search work of the existing mechanism model is summarized.Meanwhile,this paper reviews the research status of spaceborne GNSS-R and other signal of opportunity reflection remote sensing(SoOP-R).GNSS-R's applications on soil moisture,vegetation,soil freeze-thaw monitoring are focused on,while the research status of the latest SoOP-R technology in root zone soil moisture and snow water equivalent is also summa-rized.In this way,we hope to promote the development of this technology in the detection of major climatic and meteorological parameters for the hydrological cycle to a certain extent.
关键词
GNSS-R/SoOP-R/土壤水分/植被/地表冻融/根区土壤水分/雪水当量Key words
GNSS-R/SoOP-R/soil moisture/vegetation/soil freeze-thaw detection/root zone soil moisture/snow water equivalent引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据