NDLI: Detection of Sulfur Dioxide in AIRS Data With the Wavelet Packet Subspace

Content Provider	IEEE Xplore Digital Library
Author	Salvador, M.Z. Resmini, R.G. Gomez, R.B.
Copyright Year	2004
Abstract	A generalized method for trace-gas detection in hyperspectral data using the wavelet packet transform is being developed. This new method decomposes the input signal using a wavelet packet transform. A best basis that is optimized for the target signature is selected for pattern matching. The wavelet packet transform, an extension of the wavelet transform, fully decomposes a signal into a library of wavelet packet bases. The application of the wavelet packet transform to hyperspectral data for the detection of trace gases takes advantage of the ability of the wavelet transform to locate spectral features in both scale and location. By analyzing the wavelet packet tree of a specific target gas, the nodes of the tree that represent an orthogonal best basis are selected. The best basis represents the significant spectral features of that gas. This is then used to identify pixels in the scene using existing matching algorithms such as spectral angle. Using data from NASA's Advanced Infrared Sounder, this method is used to detect sulfur dioxide. Initial results demonstrate a promising wavelet-packet-subspace technique for trace-gas-detection applications.
Sponsorship	IEEE Geoscience and Remote Sensing Society
Starting Page	137
Ending Page	141
Page Count	5
File Size	737620
File Format	PDF
ISSN	1545598X
Volume Number	6
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gas detectors Wavelet packets Wavelet transforms Hyperspectral imaging Infrared detectors Pattern matching Libraries Gases Wavelet analysis Layout wavelet transform Advanced Infrared Sounder (AIRS) hyperspectral sulfur dioxide wavelet packet wavelet packet subspace (WPS)
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Geotechnical Engineering and Engineering Geology

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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