Reservoir Water Level Monitoring Using CYGNSS's Level-1 Observations

被引:0
作者
Brendle, Nicholas J. [1 ,2 ]
Chan, Steven K. [3 ]
Hajj, George [3 ]
Al-Khaldi, Mohammad M. [1 ,2 ]
Johnson, Joel T. [1 ,2 ]
机构
[1] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA
[2] Ohio State Univ, Electrosci Lab, Columbus, OH 43210 USA
[3] CALTECH, NASA Jet Prop Lab, Pasadena, CA 91125 USA
关键词
GNSS reflectometry; inland water monitoring; microwave remote sensing; GNSS-R;
D O I
10.1109/JSTARS.2024.3384111
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The use of measurements from NASA's CYGNSS mission for the mapping of inland water bodies has been extensively demonstrated in past works. Despite this progress, the use of CYGNSS measurements for monitoring dynamic properties of water bodies, such as reservoir storage levels remains challenging given the need to combine observations over extended time periods or areas to improve water detection performance. This work explores the feasibility of an alternative sensing approach based on CYGNSS Level-1 products that has the potential to estimate reservoir water storage levels on intervals significantly finer compared to existing techniques. The method is explored using three example reservoirs with CYGNSS observations extending from October 2018 to December 2022. Retrieved water levels are found to be associated with relative water level root-mean-square-errors varying from 8-20% depending on the observed scenes' level of complexity. Correlations of up to approximate to 86% relative to in situ data are observed. The initial results presented in this work highlight the potential of spaceborne GNSS-R systems for reservoir water level monitoring.
引用
收藏
页码:9090 / 9098
页数:9
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