A STUDY OF THE SECOND ORDER SMALL SLOPE APPROXIMATION FOR L-BAND BACKSCATTERING FROM SOIL SURFACES

被引：0

作者：

Horton, Dustin ^{[1
,2
]}

Johnson, Joel T. ^{[1
,2
]}

Al-Khaldi, Mohammad ^{[1
,2
]}

Park, Jeonghw An ^{[3
,4
]}

Bindlish, Rajat ^{[3
]}

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] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA

[4] Global Sci & Technol Inc, Greenbelt, MD 20770 USA

来源：

IGARSS 2024-2024 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, IGARSS 2024 | 2024年

关键词：

small slope approximation; SSA2; soil moisture; electromagnetic scattering; NISAR;

D O I：

10.1109/IGARSS53475.2024.10642505

中图分类号：

学科分类号：

摘要：

The development of soil moisture retrieval algorithms for the upcoming NASA/ISRO SAR mission motivates investigations into soil surface scattering effects and their influence on soil moisture retrievals. To better understand the conditions that impact retrieval performance, an investigation is performed into the second-order solution small slope approximation (SSA2) for rough surface backscattering. Scattering amplitudes are calculated for varying soil moisture and surface roughness conditions and compared to the first-order solution. The results show the ability of the second-order solution to model cross-pol scattering and help pinpoint physical conditions that may influence soil moisture retrievals. Overall, the results suggest that the first-order SSA solution should be applicable under the physical conditions where NISAR soil moisture retrievals are expected to be performed.

引用

页码：4354 / 4357

页数：4

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