NDLI: Extended source imaging using a single rotating modulation collimator

Content Provider	IEEE Xplore Digital Library
Author	Kowash, B.R. Wehe, D.K. Boyce, N.O.
Copyright Year	2009
Description	Author affiliation: Air Force Institute of Technology, Wright Patterson AFB, OH 45431 USA (Kowash, B.R.; Boyce, N.O.) \|\| University of Michigan, Ann Arbor, MI 48105 USA (Wehe, D.K.)
Abstract	Rotating modulation collimators (RMC) have traditionally been most sensitive for locating point sources, but have also been used for imaging time dependent extended sources such as solar flares. Current methods for RMC imaging of extended sources have relied upon multiple RMC systems each with their own detectors, electronics, and mask sets. The difference between systems is that each mask pair has a different set of slit spacings so that different spatial frequency components of the source field can be recorded. The data from the ensemble of RMCs is then combined to produce the final extended source image. This research considers a different approach for imaging extended sources with an RMC. This method relies on a single RMC system, and takes advantage of the fact that for terrestrial imaging the separation between masks is an easily changeable and free parameter. Changing the separation between the masks effectively represents changing the spatial frequency over which the RMC is most sensitive. By measuring multiple data sets with different values of the mask separation parameter, a more complete map of the frequency domain can be recorded. This data is then used with a maximum likelihood expectation maximization algorithm to generate the final image.
Starting Page	1897
Ending Page	1901
File Size	1249450
Page Count	5
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5402165
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Collimators Nuclear and plasma sciences Virtual reality Decision support systems
Content Type	Text
Resource Type	Article

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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