NDLI: Comparison of stereo-optical and dual-band InSAR DEMs in Papua New Guinea

Content Provider	IEEE Xplore Digital Library
Author	Tadono, T. Williams, M.L. Hensley, S.
Copyright Year	2012
Description	Author affiliation: Cooperative Research Centre for Spatial Information, Level 5, 204 Lygon Street, Carlton VIC 3053 Australia (Williams, M.L.) \|\| Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, 91109 US (Hensley, S.) \|\| Japan Aerospace Exploration Agency, 2-1-1, Sengen, Tsukuba, Ibaraki 305-8505 Japan (Tadono, T.)
Abstract	This paper describes comparison of digital elevation data derived from synthetic aperture radar (SAR) and stereo optical imagery used to understand temporal changes of tropical forest and to estimate tree height in tropical regions. Tree height information is important for forest management and global carbon cycle studies. An intereferometric SAR (InSAR) potentially unhampered by tropical cloud cover. InSAR heights depend on the microwave frequency: low frequency P-band penetrates to the forest floor and ground-volume scattering yields a height close to terrain height, high frequency X-band displays only shallow canopy penetration, and may yield heights several metres below the canopy surface. The exact behaviours depend on the nature of both terrain and forest. A stereo-optical sensor may be used to derive digital elevation data using photogrammetry. Several recent satellite-based stereo-optical instruments operate with fine spatial resolution however optical imagery is affected by clouds. The forest height derived from optical images is essentially the top of the canopy. This research investigates whether it is possible to understand forest changes in tropical regions by comparing digital elevations from dual-frequency, single-pass airborne InSAR with satellite-based stereo-optical data in Papua New Guinea. The results indicate the possibility of forest change and tree height estimation using this combination of data.
Starting Page	3158
Ending Page	3161
File Size	1781597
Page Count	4
File Format	PDF
ISBN	9781467311601
ISSN	21536996
e-ISBN	9781467311595
e-ISBN	9781467311588
DOI	10.1109/IGARSS.2012.6350755
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-22
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Synthetic aperture radar Optical sensors Optical imaging Optical interferometry Laser radar Adaptive optics Vegetation ALOS Tree height GeoSAR PRISM
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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