{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:18:09Z","timestamp":1760242689634,"version":"build-2065373602"},"reference-count":26,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2016,1,20]],"date-time":"2016-01-20T00:00:00Z","timestamp":1453248000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Special Fund by Surveying &amp; Mapping and Geoinformation Research in the Public Interest","award":["201412002"],"award-info":[{"award-number":["201412002"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Synthetic Aperture Radar (SAR) ship detection is an important maritime application. However, azimuth ambiguities caused by the finite sampling of the Doppler spectrum are often visible in SAR images and are always mistaken as ships by classic detection techniques, like the Constant False Alarm Rate (CFAR). It is known that radar targets and azimuth ambiguities have different characteristics in polarimetric SAR (PolSAR) data, i.e., first ambiguities usually have strong odd- or double-bounce scattering and the maximum amplitude of the first ambiguity in SHV is always considerably smaller than that of the corresponding target for zero or high velocity. On the basis of this characteristics, this paper finds that first ambiguities usually have low volume scattering power relative to ships and almost have no helix scattering by Yamaguchi decomposition. But some residual ambiguities still exit in the volume scattering power and have similar scattering intensity to small ships, and some parts of a ship also have zero helix scattering owing to some physical factors (e.g., ship structure, radar incidence angle, etc.). Thus, for high-precision ship detection, a new ship detection method based on cross-correlation between the volume and helix scattering mechanisms derived from Yamaguchi decomposition is proposed to avoid false alarms caused by azimuth ambiguities and enhance Target-to-Clutter Ratio (TCR) for improving the miss detection rate of small ships. By experiments, it is proved that our method can work effectively and has high detection accuracy.<\/jats:p>","DOI":"10.3390\/rs8010074","type":"journal-article","created":{"date-parts":[[2016,1,20]],"date-time":"2016-01-20T11:19:41Z","timestamp":1453288781000},"page":"74","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["On the Use of Cross-Correlation between Volume Scattering and Helix Scattering from Polarimetric SAR Data for the Improvement of Ship Detection"],"prefix":"10.3390","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3626-393X","authenticated-orcid":false,"given":"Jujie","family":"Wei","sequence":"first","affiliation":[{"name":"Institute of Photogrammetry and Remote Sensing, Chinese Academy of Surveying &amp; Mapping, Beijing 100830, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jixian","family":"Zhang","sequence":"additional","affiliation":[{"name":"Institute of Photogrammetry and Remote Sensing, Chinese Academy of Surveying &amp; Mapping, Beijing 100830, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guoman","family":"Huang","sequence":"additional","affiliation":[{"name":"Institute of Photogrammetry and Remote Sensing, Chinese Academy of Surveying &amp; Mapping, Beijing 100830, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zheng","family":"Zhao","sequence":"additional","affiliation":[{"name":"Institute of Photogrammetry and Remote Sensing, Chinese Academy of Surveying &amp; Mapping, Beijing 100830, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2016,1,20]]},"reference":[{"key":"ref_1","unstructured":"Curlander, J.C., and Mcdonough, R.N. (1991). Synthetic Aperture Radar: Systems and Signal Processing, Wiley-Interscience."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"3197","DOI":"10.1080\/01431161.2011.633123","article-title":"Removal of azimuth ambiguities and detection of a ship: Using polarimetric airborne C-band SAR images","volume":"33","author":"Wang","year":"2012","journal-title":"Int. J. Remote Sens."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1383","DOI":"10.1109\/JSTARS.2013.2269996","article-title":"A new automatic ship detection method using L-band polarimetric SAR imagery","volume":"7","author":"Wei","year":"2014","journal-title":"IEEE J. Sel. Top. Appl. Earth Observ."},{"key":"ref_4","unstructured":"Crisp, D.J. (2004). The State-of the Art in Ship Detection in Synthetic Aperture Radar Imagery, DSTO Information Sciences Laboratory."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"885","DOI":"10.1109\/36.239912","article-title":"Suppressing the azimuth ambiguities in synthetic aperture radar images","volume":"31","author":"Moreira","year":"1993","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"625","DOI":"10.1109\/TGRS.2004.842476","article-title":"Adaptive removal of azimuth ambiguities in SAR images","volume":"43","year":"2005","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"3967","DOI":"10.1109\/JSTARS.2014.2320155","article-title":"Filtering of azimuth ambiguity in stripmap synthetic aperture radar images","volume":"7","author":"Iodice","year":"2014","journal-title":"IEEE J. Sel. Top. Appl. Earth Observ."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"51","DOI":"10.5589\/m06-013","article-title":"Effects of target motion on polarimetric SAR images","volume":"32","author":"Liu","year":"2006","journal-title":"Can. J. Remote Sens."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"237","DOI":"10.5589\/m07-019","article-title":"Time-frequency analysis of PolSAR moving target data","volume":"33","author":"Liu","year":"2007","journal-title":"Can. J. Remote Sens."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"3426","DOI":"10.1109\/TGRS.2007.907192","article-title":"A new application for PolSAR imagery in the field of moving target indication\/ship detection","volume":"45","author":"Liu","year":"2007","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Velotto, D., Soccorsi, M., and Lehner, S. (2012, January 22\u201327). Azimuth ambiguities removal for ship detection using full polarimetric X-band SAR data. Proceedings of the 2012 International Geoscience Remote Sensing Symposium (IGARSS), Munich, Germany.","DOI":"10.1109\/IGARSS.2012.6351863"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1109\/TGRS.2012.2236337","article-title":"Azimuth ambiguities removal for ship detection using full polarimetric X-band SAR data","volume":"52","author":"Velotto","year":"2014","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_13","unstructured":"Lee, J.S., and Pottier, E. (2009). Polarimetric Radar Imaging: From Basics to Applications, CRC Pressl Llc."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"2725","DOI":"10.1109\/TGRS.2003.817809","article-title":"On the use of complex SAR image spectral analysis for target detection: Assessment of polarimetry","volume":"41","author":"Souyris","year":"2003","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"391","DOI":"10.1109\/LGRS.2009.2037341","article-title":"On a novel approach using MLCC and CFAR for the improvement of ship detection by Synthetic Aperture Radar","volume":"7","author":"Hwang","year":"2010","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_16","unstructured":"Freeman, A. (1993, January 18\u201321). The effects of noise on polarimetric SAR data. Proceedings of the 1993 International Geoscience Remote Sensing Symposium (IGARSS), Tokyo, Japan."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1699","DOI":"10.1109\/TGRS.2005.852084","article-title":"Four-component scattering model for polarimetric SAR image decomposition","volume":"43","author":"Yamaguchi","year":"2005","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1667","DOI":"10.1109\/TGRS.2008.916326","article-title":"POLSAR image analysis of wetlands using a modified four-component scattering power decomposition","volume":"46","author":"Yajima","year":"2008","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"2251","DOI":"10.1109\/TGRS.2010.2099124","article-title":"Four-component scattering power decomposition with rotation of coherency matrix","volume":"49","author":"Yamaguchi","year":"2011","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"166","DOI":"10.1109\/LGRS.2011.2162935","article-title":"Four-component scattering power decomposition with extended volume scattering model","volume":"9","author":"Sato","year":"2012","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"3014","DOI":"10.1109\/TGRS.2012.2212446","article-title":"General four-component scattering power decomposition with unitary transformation of coherency matrix","volume":"51","author":"Singh","year":"2013","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_22","unstructured":"Arnaud, A. (July, January 28). Ship detection by SAR interferometry. Proceedings of the 1999 International Geoscience Remote Sensing Symposium (IGARSS), Hamburg, Germany."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"184","DOI":"10.1109\/LGRS.2004.827462","article-title":"Ship detection based on coherence images derived from cross correlation of multilook SAR images","volume":"1","author":"Ouchi","year":"2004","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1221","DOI":"10.3390\/s90201221","article-title":"Improving ship detection with polarimetric SAR based on convolution between co-polarization channels","volume":"9","author":"Li","year":"2009","journal-title":"Sensors"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"4173","DOI":"10.1109\/TGRS.2012.2189011","article-title":"A hierarchical ship detection scheme for high-resolution SAR images","volume":"50","author":"Wang","year":"2012","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"545","DOI":"10.1109\/LGRS.2010.2041322","article-title":"Ship detection using TerraSAR-X images in the campos basin (Brazil)","volume":"7","author":"Paes","year":"2010","journal-title":"IEEE Geosci. Remote Sens. Lett."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/8\/1\/74\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T19:18:00Z","timestamp":1760210280000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/8\/1\/74"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,1,20]]},"references-count":26,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2016,1]]}},"alternative-id":["rs8010074"],"URL":"https:\/\/doi.org\/10.3390\/rs8010074","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2016,1,20]]}}}