A Modified \omega- k Algorithm for HS-SAR Small-Aperture Data Imaging

Due to the skew data support region (DSR) of the 2-D wavenumber spectrum for high-squint synthetic aperture radar (HS-SAR), the conventional w-k algorithm cannot fully utilize the DSR and thus degrades the resolution if simply taking a rectangle region. Meanwhile, for the small-aperture data, direct...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on geoscience and remote sensing Vol. 54; no. 6; pp. 3710 - 3721
Main Authors Liang, Yi, Huai, Yuanyuan, Ding, Jinshan, Wang, Hongxian, Xing, Mengdao
Format Journal Article
LanguageEnglish
Published IEEE 01.06.2016
Subjects
Approximation algorithms
Azimuth
Azimuth resampling
Couplings
Focusing
high-squint synthetic aperture radar (HS-SAR)
modified omega- k algorithm
Signal processing algorithms
small-aperture data
SPECAN
Synthetic aperture radar
wavenumber domain
wavenumber domain
small-aperture data
SPECAN
modified omega– k algorithm
high-squint synthetic aperture radar (HS-SAR)
Azimuth resampling
Online AccessGet full text
ISSN0196-2892
1558-0644
DOI10.1109/TGRS.2016.2525787

Cover

Abstract Due to the skew data support region (DSR) of the 2-D wavenumber spectrum for high-squint synthetic aperture radar (HS-SAR), the conventional w-k algorithm cannot fully utilize the DSR and thus degrades the resolution if simply taking a rectangle region. Meanwhile, for the small-aperture data, direct azimuth imaging in the distance domain will lead to serious aliasing. A modified ω-k algorithm is derived in this paper to solve these problems. The maximum usage of DSR is achieved by the coordinate rotation. As for the azimuth dependence, the method of azimuth resampling is used to get the uniform focusing. Different from the traditional w-k method, the modified w-k algorithm focuses the small-aperture data in the azimuth wavenumber domain by SPECAN processing, which avoids padding a large number of zeros when imaging in the azimuth distance domain. Simulated and real-data results show the validity and effectiveness of the presented algorithm.
AbstractList Due to the skew data support region (DSR) of the 2-D wavenumber spectrum for high-squint synthetic aperture radar (HS-SAR), the conventional w-k algorithm cannot fully utilize the DSR and thus degrades the resolution if simply taking a rectangle region. Meanwhile, for the small-aperture data, direct azimuth imaging in the distance domain will lead to serious aliasing. A modified ω-k algorithm is derived in this paper to solve these problems. The maximum usage of DSR is achieved by the coordinate rotation. As for the azimuth dependence, the method of azimuth resampling is used to get the uniform focusing. Different from the traditional w-k method, the modified w-k algorithm focuses the small-aperture data in the azimuth wavenumber domain by SPECAN processing, which avoids padding a large number of zeros when imaging in the azimuth distance domain. Simulated and real-data results show the validity and effectiveness of the presented algorithm.
Author Mengdao Xing
Hongxian Wang
Yuanyuan Huai
Yi Liang
Jinshan Ding
Author_xml – sequence: 1
  givenname: Yi
  surname: Liang
  fullname: Liang, Yi
– sequence: 2
  givenname: Yuanyuan
  surname: Huai
  fullname: Huai, Yuanyuan
– sequence: 3
  givenname: Jinshan
  surname: Ding
  fullname: Ding, Jinshan
– sequence: 4
  givenname: Hongxian
  surname: Wang
  fullname: Wang, Hongxian
– sequence: 5
  givenname: Mengdao
  surname: Xing
  fullname: Xing, Mengdao
BookMark eNp90EFLwzAYxvEgE9ymH0C85Auk5k3bJD2WObfBRFjnTShpmtRo24y0Hvz2OjY8ePD0nn7vA_8ZmvS-NwjdAo0AaHa_X-2KiFHgEUtZKqS4QFNIU0koT5IJmlLIOGEyY1doNgzvlEKSgpiiZY6ffO2sMzV-9Z1pFMEfOG8bH9z41mHrA14XpMh3uOhU25L8YML4GQx-UKPCm041rm-u0aVV7WBuzneOXh6X-8WabJ9Xm0W-JRokHYmVjGsLpuKgYqiEFbqWtqpTKo2OtY2rmtsUdF1ZkWlRWUk1WBknicmYpCKeIzj91cEPQzC2PATXqfBVAi2PHcpjh_LYoTx3-DHij9FuVKPz_RiUa_-VdyfpjDG_SyJhjEoefwNc12x4
CODEN IGRSD2
CitedBy_id crossref_primary_10_3390_rs13142807
crossref_primary_10_1109_TGRS_2017_2678763
crossref_primary_10_1109_JSTARS_2025_3525774
crossref_primary_10_1109_TGRS_2020_3036452
crossref_primary_10_1109_TGRS_2023_3255518
crossref_primary_10_1109_TGRS_2021_3138018
crossref_primary_10_3390_rs15122976
crossref_primary_10_1016_j_sigpro_2020_107506
crossref_primary_10_1109_LGRS_2023_3335650
crossref_primary_10_1109_JSTARS_2020_2993466
crossref_primary_10_1109_LGRS_2020_3035806
crossref_primary_10_1109_TGRS_2022_3228282
crossref_primary_10_1109_TGRS_2021_3063780
crossref_primary_10_1109_LGRS_2022_3140865
crossref_primary_10_1109_TGRS_2018_2848249
crossref_primary_10_1117_1_JRS_13_014529
crossref_primary_10_1109_TGRS_2023_3268318
crossref_primary_10_1049_iet_rsn_2017_0068
crossref_primary_10_1109_ACCESS_2020_3015437
Cites_doi 10.1109/TGRS.2011.2145384
10.1109/TGRS.2012.2183606
10.1109/TGRS.2015.2447393
10.1109/LGRS.2012.2195634
10.1049/ip-f-1.1985.0006
10.1109/TGRS.2012.2213342
10.1109/TAES.2011.6034676
10.1109/7.78293
10.1109/TGRS.2008.2010852
10.1109/TGRS.2008.2007591
10.1049/iet-rsn.2014.0384
10.1109/MGRS.2013.2248301
10.1109/LGRS.2013.2254106
10.1109/36.536528
10.1109/TGRS.2012.2190937
10.1109/LGRS.2014.2306433
10.1049/ip-rsn:20045087
10.1109/JSTARS.2013.2258893
10.1109/TGRS.2011.2174460
10.1137/0914081
10.1109/36.921412
10.1109/LGRS.2012.2226139
10.1109/TGRS.2010.2102040
10.1109/JSEN.2011.2175216
10.1109/TAES.2003.1238734
10.1109/36.298008
ContentType Journal Article
DBID 97E
RIA
RIE
AAYXX
CITATION
DOI 10.1109/TGRS.2016.2525787
DatabaseName IEEE All-Society Periodicals Package (ASPP) 2005–Present
IEEE All-Society Periodicals Package (ASPP) 1998–Present
IEEE Xplore
CrossRef
DatabaseTitle CrossRef
DatabaseTitleList
Database_xml – sequence: 1
  dbid: RIE
  name: IEEE Xplore
  url: https://proxy.k.utb.cz/login?url=https://ieeexplore.ieee.org/
  sourceTypes: Publisher
DeliveryMethod fulltext_linktorsrc
Discipline Engineering
Physics
EISSN 1558-0644
EndPage 3721
ExternalDocumentID 10_1109_TGRS_2016_2525787
7422086
Genre orig-research
GrantInformation_xml – fundername: Public Science and Technology Research Funds Projects of Ocean
  grantid: 201405001
GroupedDBID -~X
0R~
29I
4.4
5GY
5VS
6IK
97E
AAJGR
AARMG
AASAJ
AAWTH
ABAZT
ABQJQ
ABVLG
ACGFO
ACGFS
ACIWK
ACNCT
AENEX
AETIX
AFRAH
AGQYO
AGSQL
AHBIQ
AI.
AIBXA
AKJIK
AKQYR
ALLEH
ALMA_UNASSIGNED_HOLDINGS
ASUFR
ATWAV
BEFXN
BFFAM
BGNUA
BKEBE
BPEOZ
CS3
DU5
EBS
EJD
F5P
HZ~
H~9
IBMZZ
ICLAB
IFIPE
IFJZH
IPLJI
JAVBF
LAI
M43
O9-
OCL
P2P
RIA
RIE
RNS
RXW
TAE
TN5
VH1
Y6R
AAYXX
CITATION
ID FETCH-LOGICAL-c180t-f826cf1eb61a31b7f7cd8fbd508ec3cf3bd6f51cdbf79c7bf80c1f8344e928073
IEDL.DBID RIE
ISSN 0196-2892
IngestDate Wed Oct 01 02:19:41 EDT 2025
Thu Apr 24 22:52:54 EDT 2025
Tue Aug 26 16:42:45 EDT 2025
IsPeerReviewed true
IsScholarly true
Issue 6
Keywords wavenumber domain
small-aperture data
SPECAN
modified omega– k algorithm
high-squint synthetic aperture radar (HS-SAR)
Azimuth resampling
Language English
License https://ieeexplore.ieee.org/Xplorehelp/downloads/license-information/IEEE.html
LinkModel DirectLink
MergedId FETCHMERGED-LOGICAL-c180t-f826cf1eb61a31b7f7cd8fbd508ec3cf3bd6f51cdbf79c7bf80c1f8344e928073
PageCount 12
ParticipantIDs crossref_primary_10_1109_TGRS_2016_2525787
ieee_primary_7422086
crossref_citationtrail_10_1109_TGRS_2016_2525787
ProviderPackageCode CITATION
AAYXX
PublicationCentury 2000
PublicationDate 2016-June
2016-6-00
PublicationDateYYYYMMDD 2016-06-01
PublicationDate_xml – month: 06
  year: 2016
  text: 2016-June
PublicationDecade 2010
PublicationTitle IEEE transactions on geoscience and remote sensing
PublicationTitleAbbrev TGRS
PublicationYear 2016
Publisher IEEE
Publisher_xml – name: IEEE
References ref13
ref12
ref15
ref14
ref31
cumming (ref11) 2005
ref30
ref33
ref32
ref10
ref17
nguyen (ref25) 0
ref16
curlander (ref1) 1991
wu (ref20) 0
soumekh (ref2) 1999
ref24
ref23
ref21
wu (ref26) 2014; 7
ref28
zhang (ref22) 2012; 12
ref27
carrara (ref7) 1995
subiza (ref19) 0
ref29
ref8
ref9
ref4
ref3
ref6
reigber (ref18) 2006; 153
ref5
References_xml – ident: ref30
  doi: 10.1109/TGRS.2011.2145384
– ident: ref13
  doi: 10.1109/TGRS.2012.2183606
– ident: ref14
  doi: 10.1109/TGRS.2015.2447393
– ident: ref27
  doi: 10.1109/LGRS.2012.2195634
– ident: ref29
  doi: 10.1049/ip-f-1.1985.0006
– ident: ref23
  doi: 10.1109/TGRS.2012.2213342
– ident: ref33
  doi: 10.1109/TAES.2011.6034676
– ident: ref15
  doi: 10.1109/7.78293
– ident: ref16
  doi: 10.1109/TGRS.2008.2010852
– ident: ref4
  doi: 10.1109/TGRS.2008.2007591
– start-page: 2489
  year: 0
  ident: ref20
  article-title: Improved RMA based on nonuniform fast Fourier transforms
  publication-title: Proc 9th Int Conf Signal Process
– ident: ref10
  doi: 10.1049/iet-rsn.2014.0384
– ident: ref3
  doi: 10.1109/MGRS.2013.2248301
– ident: ref9
  doi: 10.1109/LGRS.2013.2254106
– ident: ref28
  doi: 10.1109/36.536528
– ident: ref17
  doi: 10.1109/TGRS.2012.2190937
– start-page: 1
  year: 0
  ident: ref25
  article-title: Range cell migration correction for phase error compensation of highly squinted SAR
  publication-title: Proc Eur Conf Synthetic Aperture Radar
– ident: ref31
  doi: 10.1109/LGRS.2014.2306433
– volume: 153
  start-page: 301
  year: 2006
  ident: ref18
  article-title: extended wavenumber-domain synthetic aperture radar focusing with integrated motion compensation
  publication-title: Radar Sonar and Navigation IEE Proceedings -
  doi: 10.1049/ip-rsn:20045087
– year: 2005
  ident: ref11
  publication-title: Digital Processing of Synthetic Aperture Radar Data
– year: 1991
  ident: ref1
  publication-title: Synthetic Aperture Radar System and Signal Processing
– volume: 7
  start-page: 213
  year: 2014
  ident: ref26
  article-title: An azimuth frequency non-linear chirp scaling (FNCS) algorithm for TOPS SAR imaging with high squint angle
  publication-title: IEEE J Sel Topics Appl Earth Observ Remote Sens
  doi: 10.1109/JSTARS.2013.2258893
– ident: ref24
  doi: 10.1109/TGRS.2011.2174460
– start-page: 4089
  year: 0
  ident: ref19
  article-title: Non-uniform FFT's (NUFFT) algorithms applied to SAR imaging
  publication-title: Proc IEEE Int Geosci Remote Sens Symp
– ident: ref21
  doi: 10.1137/0914081
– year: 1999
  ident: ref2
  publication-title: Synthetic Aperture Radar Signal Processing with Matlab Algorithms
– ident: ref6
  doi: 10.1109/36.921412
– ident: ref5
  doi: 10.1109/LGRS.2012.2226139
– ident: ref8
  doi: 10.1109/TGRS.2010.2102040
– year: 1995
  ident: ref7
  publication-title: Spotlight Synthetic Aperture Radar Signal Processing Algorithm
– volume: 12
  start-page: 1574
  year: 2012
  ident: ref22
  article-title: Wavenumber-domain autofocusing for highly squinted UAV SAR imagery
  publication-title: IEEE Sens J
  doi: 10.1109/JSEN.2011.2175216
– ident: ref32
  doi: 10.1109/TAES.2003.1238734
– ident: ref12
  doi: 10.1109/36.298008
SSID ssj0014517
Score 2.2913928
Snippet Due to the skew data support region (DSR) of the 2-D wavenumber spectrum for high-squint synthetic aperture radar (HS-SAR), the conventional w-k algorithm...
SourceID crossref
ieee
SourceType Enrichment Source
Index Database
Publisher
StartPage 3710
SubjectTerms Approximation algorithms
Azimuth
Azimuth resampling
Couplings
Focusing
high-squint synthetic aperture radar (HS-SAR)
modified omega- k algorithm
Signal processing algorithms
small-aperture data
SPECAN
Synthetic aperture radar
wavenumber domain
Title A Modified \omega- k Algorithm for HS-SAR Small-Aperture Data Imaging
URI https://ieeexplore.ieee.org/document/7422086
Volume 54
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
journalDatabaseRights – providerCode: PRVIEE
  databaseName: IEEE Xplore
  customDbUrl:
  eissn: 1558-0644
  dateEnd: 99991231
  omitProxy: false
  ssIdentifier: ssj0014517
  issn: 0196-2892
  databaseCode: RIE
  dateStart: 19800101
  isFulltext: true
  titleUrlDefault: https://ieeexplore.ieee.org/
  providerName: IEEE
link http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwjV3dS8MwED90IOiDH5viN3nwScxs2q3tHotOpzAf9gF7EEpzSeawW8fsXvzrTdI6VER8KyGB9O7gfpe7-x3AhdRWonG4eXFHpA2OgobasVJh2L-ZKx0XbZXvk98ZNh5HzdEaXK16YaSUtvhM1s2nzeWLDJfmqexah3GuhuDrsB6EftGrtcoYNJqsbI32qQ4i3DKDyZzW9eC-1zdFXH7dbVoL_eaDvgxVsT7lbge6n7cpSkle68uc1_H9B1Hjf6-7C9sluCRRYQ17sCZnVdj6QjlYhQ1b8olvNWhHpJuJidIYlDxnUzlOKHklUTrOFpP8ZUo0miWdPu1HPdKfJmlKo7lcmHwDuU3yhDxM7XyjfRjetQc3HVoOVaDIQienSscTqJjkPks8xgMVoAgVFxqoSfRQeVz4qslQcBW0MOAqdJApM41DtgxzjncAlVk2k4dAhCOYaWU1jJP6V5WO_EKjcoZeIDTyOwLnU8wxlozjZvBFGtvIw2nFRjOx0UxcauYILldH5gXdxl-ba0boq42lvI9_Xz6BTXO4KPM6hUq-WMozDShyfm4t6QOW_cPW
linkProvider IEEE
linkToHtml http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwjV1LT8MwDLZ4CAEH3og3OXBCZGv63rHiNR7jwIbEAalqnATQHp1Gd-HXk6RlAoQQt6pKqtS25M-x_RngSGor0Tjc3LgjUp-joLF2rFQY9m_mSsdFW-V7FzYf_OvH4HEKTia9MFJKW3wma-bR5vJFjmNzVVbXYZyrIfg0zAa-7wdlt9YkZ-AHrGqODqkOI9wqh8mcRr1zed82ZVxhzQ2sjX7zQl_GqlivcrEMrc_zlMUk3dq44DV8_0HV-N8Dr8BSBS9JUtrDKkzJwRosfiEdXIM5W_SJb-twnpBWLl6VRqHkKe_L54ySLkl6z_notXjpE41nSbNN28k9afezXo8mQzkyGQdylhUZuerbCUcb8HBx3jlt0mqsAkUWOwVVOqJAxSQPWeYxHqkIRay40FBNoofK4yJUAUPBVdTAiKvYQabMPA7ZMNw53ibMDPKB3AIiHMFMM6vhnNS_qnTsFxulM_QiobHfNjifYk6x4hw3oy96qY09nEZqNJMazaSVZrbheLJlWBJu_LV43Qh9srCS987vrw9hvtlp3aa3V3c3u7BgPlQWfe3BTDEay30NLwp-YK3qAwiVxyM
openUrl ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=A+Modified+%24%5Comega%24+%E2%80%93+%24k%24+Algorithm+for+HS-SAR+Small-Aperture+Data+Imaging&rft.jtitle=IEEE+transactions+on+geoscience+and+remote+sensing&rft.au=Liang%2C+Yi&rft.au=Huai%2C+Yuanyuan&rft.au=Ding%2C+Jinshan&rft.au=Wang%2C+Hongxian&rft.date=2016-06-01&rft.issn=0196-2892&rft.eissn=1558-0644&rft.volume=54&rft.issue=6&rft.spage=3710&rft.epage=3721&rft_id=info:doi/10.1109%2FTGRS.2016.2525787&rft.externalDBID=n%2Fa&rft.externalDocID=10_1109_TGRS_2016_2525787
thumbnail_l http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=0196-2892&client=summon
thumbnail_m http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=0196-2892&client=summon
thumbnail_s http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=0196-2892&client=summon