Inland Water Body Mapping Using CYGNSS Coherence Detection

被引：56

作者：

Al-Khaldi, Mohammad M. ^{[1
]}

Johnson, Joel T. ^{[2
,3
]}

Gleason, Scott ^{[1
]}

Chew, Clara C. ^{[1
]}

Gerlein-Safdi, Cynthia ^{[4
]}

Shah, Rashmi ^{[5
]}

Zuffada, Cinzia ^{[5
]}

机构：

[1] Univ Corp Atmospher Res UCAR, Constellat Observing Syst Meteorol Ionosphere & C, Boulder, CO 80301 USA

[2] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA

[3] Ohio State Univ, ElectroSci Lab, Columbus, OH 43210 USA

[4] Univ Michigan, Dept Climate & Space Sci & Engn CLASP, Ann Arbor, MI 48109 USA

[5] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2021年 / 59卷 / 09期

关键词：

Land surface; Surface roughness; Rough surfaces; Surface topography; Sea surface; Vegetation mapping; Coherence; Bistatic radar systems; coherency; cyclone global navigation satellite system (CYGNSS); Global Navigation Satellite Systems Reflectometry (GNSS-R); inland water dynamics; rough surface scattering; SOIL-MOISTURE; GNSS-R; SURFACE-WATER; SCATTERING; SIGNALS; REFLECTIONS; OCEAN; MASK;

D O I：

10.1109/TGRS.2020.3047075

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

This work demonstrates the creation of dynamic inland water body masks at spatial resolutions ranging from 1 to 3 km through the use of a recently developed coherence detector for the delay-Doppler maps produced by the cyclone global navigation satellite system (CYGNSS) constellation. The use of the coherence of the observed measurements reduces many of the uncertainties associated with previous signal-to-noise ratio-based water body detection approaches for CYGNSS. Using data from January 2018 to February 2020 and producing maps representing time intervals ranging from 3 months to 2 years, the water body masks created are found to be associated with a probability of detection that exceeds 80% as compared to the Pekel water mask developed from Landsat observations. The analysis presented in this work highlights the potential of using spaceborne Global Navigation Satellite Systems Reflectometry (GNSS-R) systems for dynamic inland water body mapping.

引用

页码：7385 / 7394

页数：10

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