Reduced Complexity multi-frequency imaging using active aperture synthesis.

Active imaging utilizes an may of transmitting elements to illuminate a Scene and an array of receiving elements to capture and process the reflections. The narrowband coarray defmition provides a convenient framework for understanding active imaging, and designing schemes to reduce the number of transmining and receiving elements required. Widehand signals have been used for active aperture synthetic imaging to obtain range resolution, as well as to improve angular resolution The step- frequency method achieves the effect of short duration pulses through frequency synthesis, and the coarray idea can be applied in this situation also. In this paper, we investigate approaches to reduce the signal processing time and hardware complexity of multkfrequency imging schemes, while still maintaining a reasonable image quality. In one approach we randomly drop points in the frequencycoarray space. Another scheme uses n m w band traosmissions (groups of frequencies) fmm multiple transmitters and results in a pseudorandom placement of frequencycoarray points. Orthogonal transmission of multifrequencies allows simultaneous detection at receivers and reduces image acquisition time. Simulation results show good performance and hardware complexity and acquisition time trade-offs.

Main Author: Guo, Yi.
Other Authors: Kassam, A., Ahmad, Fauzia., Amin, Moeness.
Format: Villanova Faculty Authorship
Language: English
Published: 2004
Online Access: http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:173591
PID vudl:173591
id vudl:173591
modeltype_str_mv vudl-system:CoreModel
vudl-system:CollectionModel
vudl-system:ResourceCollection
datastream_str_mv DC
PARENT-QUERY
PARENT-LIST-RAW
PARENT-LIST
MEMBER-QUERY
MEMBER-LIST-RAW
LEGACY-METS
LICENSE
AGENTS
PROCESS-MD
THUMBNAIL
STRUCTMAP
RELS-EXT
hierarchytype
sequence_vudl_173023_str 0000000190
has_order_str no
hierarchy_top_id vudl:641262
vudl:641262
hierarchy_top_title Villanova faculty author
Villanova faculty author
hierarchy_parent_id vudl:173023
vudl:469169
hierarchy_parent_title Amin Moeness
Fauzia Ahmad
hierarchy_sequence 0000000190
0000000000
hierarchy_first_parent_id_str vudl:173591
hierarchy_sequence_sort_str 0000000190
hierarchy_all_parents_str_mv vudl:173023
vudl:469169
vudl:172968
vudl:641262
vudl:172968
vudl:173023
vudl:469169
vudl:172968
vudl:641262
vudl:172968
first_indexed 2014-01-11T21:56:02Z
last_indexed 2021-04-12T19:38:29Z
recordtype vudl
fullrecord <root> <url> http://digital.library.villanova.edu/files/vudl:173591/DC </url> <thumbnail> http://digital.library.villanova.edu/files/vudl:173591/THUMBNAIL </thumbnail> </root>
spelling
institution Villanova University
collection Digital Library
language English
dc_source_str_mv Proceedings of the IEEE AP-S International Symposium 2004 Digest, Monterey, CA, June 2004.
author Guo, Yi.
author_facet_str_mv Guo, Yi.
Kassam, A.
Ahmad, Fauzia.
Amin, Moeness.
author_or_contributor_facet_str_mv Guo, Yi.
Kassam, A.
Ahmad, Fauzia.
Amin, Moeness.
author_s Guo, Yi.
spellingShingle Guo, Yi.
Reduced Complexity multi-frequency imaging using active aperture synthesis.
author-letter Guo, Yi.
author_sort_str Guo, Yi.
author2 Kassam, A.
Ahmad, Fauzia.
Amin, Moeness.
author2Str Kassam, A.
Ahmad, Fauzia.
Amin, Moeness.
dc_title_str Reduced Complexity multi-frequency imaging using active aperture synthesis.
title Reduced Complexity multi-frequency imaging using active aperture synthesis.
title_short Reduced Complexity multi-frequency imaging using active aperture synthesis.
title_full Reduced Complexity multi-frequency imaging using active aperture synthesis.
title_fullStr Reduced Complexity multi-frequency imaging using active aperture synthesis.
title_full_unstemmed Reduced Complexity multi-frequency imaging using active aperture synthesis.
collection_title_sort_str reduced complexity multi-frequency imaging using active aperture synthesis.
title_sort reduced complexity multi-frequency imaging using active aperture synthesis.
format Villanova Faculty Authorship
description Active imaging utilizes an may of transmitting elements to illuminate a Scene and an array of receiving elements to capture and process the reflections. The narrowband coarray defmition provides a convenient framework for understanding active imaging, and designing schemes to reduce the number of transmining and receiving elements required. Widehand signals have been used for active aperture synthetic imaging to obtain range resolution, as well as to improve angular resolution The step- frequency method achieves the effect of short duration pulses through frequency synthesis, and the coarray idea can be applied in this situation also. In this paper, we investigate approaches to reduce the signal processing time and hardware complexity of multkfrequency imging schemes, while still maintaining a reasonable image quality. In one approach we randomly drop points in the frequencycoarray space. Another scheme uses n m w band traosmissions (groups of frequencies) fmm multiple transmitters and results in a pseudorandom placement of frequencycoarray points. Orthogonal transmission of multifrequencies allows simultaneous detection at receivers and reduces image acquisition time. Simulation results show good performance and hardware complexity and acquisition time trade-offs.
publishDate 2004
normalized_sort_date 2004-01-01T00:00:00Z
dc_date_str 2004
license_str protected
REPOSITORYNAME FgsRepos
REPOSBASEURL http://hades.library.villanova.edu:8088/fedora
fgs.state Active
fgs.label Reduced Complexity multi-frequency imaging using active aperture synthesis.
fgs.ownerId diglibEditor
fgs.createdDate 2013-01-22T02:59:35.773Z
fgs.lastModifiedDate 2021-04-12T19:09:57.343Z
dc.title Reduced Complexity multi-frequency imaging using active aperture synthesis.
dc.creator Guo, Yi.
Kassam, A.
Ahmad, Fauzia.
Amin, Moeness.
dc.description Active imaging utilizes an may of transmitting elements to illuminate a Scene and an array of receiving elements to capture and process the reflections. The narrowband coarray defmition provides a convenient framework for understanding active imaging, and designing schemes to reduce the number of transmining and receiving elements required. Widehand signals have been used for active aperture synthetic imaging to obtain range resolution, as well as to improve angular resolution The step- frequency method achieves the effect of short duration pulses through frequency synthesis, and the coarray idea can be applied in this situation also. In this paper, we investigate approaches to reduce the signal processing time and hardware complexity of multkfrequency imging schemes, while still maintaining a reasonable image quality. In one approach we randomly drop points in the frequencycoarray space. Another scheme uses n m w band traosmissions (groups of frequencies) fmm multiple transmitters and results in a pseudorandom placement of frequencycoarray points. Orthogonal transmission of multifrequencies allows simultaneous detection at receivers and reduces image acquisition time. Simulation results show good performance and hardware complexity and acquisition time trade-offs.
dc.date 2004
dc.format Villanova Faculty Authorship
dc.identifier vudl:173591
dc.source Proceedings of the IEEE AP-S International Symposium 2004 Digest, Monterey, CA, June 2004.
dc.language en
license.mdRef http://digital.library.villanova.edu/copyright.html
agent.name Falvey Memorial Library, Villanova University
KHL
has_thumbnail true
THUMBNAIL_contentDigest_type MD5
THUMBNAIL_contentDigest_digest 203c69e18f4f46c81e9892448d2c07cd
THUMBNAIL_contentLocation_type INTERNAL_ID
THUMBNAIL_contentLocation_ref http://hades-vm.library.villanova.edu:8088/fedora/get/vudl:173591/THUMBNAIL/2013-01-22T02:59:37.794Z
relsext.hasModel info:fedora/vudl-system:CoreModel
info:fedora/vudl-system:CollectionModel
info:fedora/vudl-system:ResourceCollection
relsext.itemID oai:digital.library.villanova.edu:vudl:173591
relsext.isMemberOf info:fedora/vudl:173023
info:fedora/vudl:469169
relsext.hasLegacyURL http://digital.library.villanova.edu/Villanova%20Digital%20Collection/Faculty%20Fulltext/Amin%20Moeness/AminMoeness-7587ce20-ceb2-4eb9-88e0-6848bd79524d.xml
relsext.sortOn title
relsext.sequence vudl:173023#190
_version_ 1696864728471568384
score 13.540066
subpages