NDLI: Comparison of SAR and optical images of the rainforests of Borneo, Malaysia with field data

Content Provider	IEEE Xplore Digital Library
Author	Ouchi, K. Ipor, I.B.
Copyright Year	2002
Description	Author affiliation: Dept. of Environ. Syst. Eng., Kochi Univ. of Technol., Japan (Ouchi, K.)
Abstract	Preliminary results are described on the comparison of the optical and radar images of the rainforests of Sarawak, Malaysia, with the ground-truth data collected from the field survey. The test sites are the mangrove and adjacent virgin forests, and oil-palm plantation areas. Visible and infrared images acquired by the MOS-1b have shown their capability of extracting deforestation areas, but their applications to mangrove forests are limited. Operating at L-band with longer penetration depth, the JERS-1 SAR is superior to the ERS-2 C-band SAR for differentiating the mangrove from virgin forests, although both forests have biomass similar and well above the saturation range of the L-band RCS. The field data show that the mean tree diameter is about a half the radar wavelength in both the forests, indicating that the L-band microwave is "semi-transparent" in these forests. It is, thus, concluded that the lower (about 6 dB) RCS in the mangrove is due to specular reflection beneath the forests; while in the virgin forests there is a substantial amount of diffuse scattering by undergrowth. This hypothesis is supported by the difference in image intensity between the dry and wet seasons.
Sponsorship	IEEE IEEE Geosci. & Remote Sensing Soc. Canadian Remote Sensing Soc. Univ. Waterloo Natural Resources Canada (NRCan) Canadian Space Agency (CSA) Environ. Canada NASA Nat. Oceanic & Atmos. Adm. (NOAA) Office of Naval Res.(ONR) Nat. Space Dev. Agency of Japan (NASDA) Nat. Polar-orbiting Environ. Satellite Syst. (NPOESS)
Starting Page	2905
Ending Page	2907
File Size	437769
Page Count	3
File Format	PDF
ISBN	078037536X
DOI	10.1109/IGARSS.2002.1026817
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-06-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical scattering L-band Biomedical optical imaging Optical saturation Laser radar Radar cross section Radar imaging Testing Infrared imaging Data mining
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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