Potential of soil moisture retrieval for tropical peatlands in Indonesia using ALOS-2 L-band full- polarimetric SAR data

Nasucha, Mohammad Potential of soil moisture retrieval for tropical peatlands in Indonesia using ALOS-2 L-band full- polarimetric SAR data. International Journal of Remote Sensing. ISSN 1366-5901

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2019_Journ_IJRS_Taylor&Francis_Soil Moisture_ALOS 2_Polarimetry SAR_YI_MN_Q1.pdf
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Official URL: https://doi.org/10.1080/01431161.2019.1584927

Abstract

In this paper, a soil moisture retrieval from full-polarimetric syn- thetic aperture radar (SAR) data is investigated for sparsely vege- tated soil surfaces. An improved retrieval method adapting the variations in vegetation is proposed by incorporating the general- ized volume model into the polarimetric two-scale two- component model (PTSTCM). The feasibility of the method, termed as the adaptive PTSTCM, has been tested for tropical peatland sites in Indonesia which exhibit a variety of sparse vege- tation cover on soil after land clearing activities. The in situ data were collected in March and August 2017 with the time domain reﬂectometry (TDR) probe for a total of 18 sample points over 11 regions. The method was applied to ALOS-2 L-band quad-pol SAR data that were acquired simultaneously with ﬁeld measurements. We compared the results between the proposed adaptive PTSTCM and the original PTSTCM that utilizes speciﬁc types of volume model (i.e., randomly, horizontally, and vertically oriented volume models). Scatterplots of estimated versus measured in situ results reveal that the adaptive PTSTCM yields a root-mean-square error (RMSE) of 5.1vol.% and inversion rate of 35.0% and 58.5% for March and August data, respectively, which are found to be super- ior to those of the original PTSTCM.

Item Type:	Artikel
Subjects:	T Technology > T Technology (General)
Divisions:	Fakultas Teknologi dan Desain > Informatika
Depositing User:	Admin Repository
Date Deposited:	17 May 2022 04:27
Last Modified:	17 May 2022 04:27
URI:	http://eprints.upj.ac.id/id/eprint/2608

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