{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:20:20Z","timestamp":1760235620231,"version":"build-2065373602"},"reference-count":12,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2021,9,6]],"date-time":"2021-09-06T00:00:00Z","timestamp":1630886400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61991421","61725105"],"award-info":[{"award-number":["61991421","61725105"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The azimuth multi-channel synthetic aperture radar (SAR) is widely used in marine observation, because of its excellent imaging ability of high-resolution and wide-swath (HRWS) signals. Different from the static targets, the azimuth ambiguity of the ships on the open sea resulting from the radial motion seriously affects the SAR image quality and ship detection probability. As a result, two methods of azimuth ambiguity suppression for moving ships based on motion phase compensation are proposed to apply to different practical application conditions. The simulation and real measured data experiments verify the ability of image quality improvement by proposed methods.<\/jats:p>","DOI":"10.3390\/rs13173543","type":"journal-article","created":{"date-parts":[[2021,9,6]],"date-time":"2021-09-06T21:47:38Z","timestamp":1630964858000},"page":"3543","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Motion Phase Compensation Methods for Azimuth Ambiguity Suppression in HRWS SAR"],"prefix":"10.3390","volume":"13","author":[{"given":"Junying","family":"Yang","sequence":"first","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Technology in Geo-Spatial Information Processing and Application Systems, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China"},{"name":"School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8517-3415","authenticated-orcid":false,"given":"Xiaolan","family":"Qiu","sequence":"additional","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Technology in Geo-Spatial Information Processing and Application Systems, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China"},{"name":"School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingyang","family":"Shang","sequence":"additional","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Technology in Geo-Spatial Information Processing and Application Systems, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China"},{"name":"School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lihua","family":"Zhong","sequence":"additional","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"Key Laboratory of Technology in Geo-Spatial Information Processing and Application Systems, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China"},{"name":"School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chibiao","family":"Ding","sequence":"additional","affiliation":[{"name":"Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China"},{"name":"School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China"},{"name":"National Key Laboratory of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,9,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"320","DOI":"10.1109\/36.823926","article-title":"The \u201cMyth\u201d of the minimum SAR antenna area constraint","volume":"38","author":"Freeman","year":"2000","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"963","DOI":"10.1109\/LGRS.2011.2144563","article-title":"Airborne Demonstration of Multichannel SAR Imaging","volume":"8","author":"Gebert","year":"2011","journal-title":"IEEE Geosci Remote Sens. Lett."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"548","DOI":"10.1109\/LGRS.2012.2212873","article-title":"Channel error estimation methods for multichannel SAR systems in azimuth","volume":"10","author":"Yang","year":"2013","journal-title":"IEEE Geosci Remote Sens. Lett."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"564","DOI":"10.1109\/TAES.2009.5089542","article-title":"Digital beamforming on receive: Techniques and optimization strategies or high-resolution wideswath SAR imaging","volume":"45","author":"Gebert","year":"2009","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"5015","DOI":"10.1109\/JSTARS.2015.2450019","article-title":"Simultaneous high-resolution wide-swath SAR imaging and ground moving target indication: Processing approaches and system concepts","volume":"8","author":"Baumgartner","year":"2015","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"5333","DOI":"10.1109\/TGRS.2013.2288269","article-title":"A Novel Moving Target Imaging Algorithm for HRWS SAR Based on Local Maximum-Likelihood Minimum Entropy","volume":"52","author":"Zhang","year":"2014","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1147","DOI":"10.1109\/TAES.2017.2667858","article-title":"A Moving Target Imaging Algorithm for HRWS SAR\/GMTI Systems","volume":"53","author":"Yang","year":"2017","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"doi-asserted-by":"crossref","unstructured":"Jin, T., Qiu, X., Hu, D., and Ding, C. (2017). Unambiguous imaging of static scenes and moving targets with the first Chinese dual-channel spaceborne SAR sensor. Sensors, 17.","key":"ref_8","DOI":"10.3390\/s17081709"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"3787","DOI":"10.1109\/JSTARS.2021.3068573","article-title":"Radial Velocity Estimation of Ships on Open Sea in the Azimuth Multichannel SAR System","volume":"14","author":"Yang","year":"2021","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens."},{"doi-asserted-by":"crossref","unstructured":"Yang, J., Qiu, X., Zhong, L., Shang, M., and Ding, C. (2019). A Simultaneous Imaging Scheme of Stationary Clutter and Moving Targets for Maritime Scenarios with the First Chinese Dual-Channel Spaceborne SAR Sensor. Remote Sens., 11.","key":"ref_10","DOI":"10.3390\/rs11192275"},{"unstructured":"Cumming, I., Dettwiler, M., and Wong, F. (2004). Digital Signal Processing of Synthetic Aperture Radar Data: Algorithms and Implementation, Artech House.","key":"ref_11"},{"doi-asserted-by":"crossref","unstructured":"Shang, M., Qiu, X., Han, B., Ding, C., and Hu, Y. (2019). Channel imbalances and along-track baseline estimation for the GF-3 azimuth multichannel mode. Remote Sens., 11.","key":"ref_12","DOI":"10.3390\/rs11111297"}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/17\/3543\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T06:57:35Z","timestamp":1760165855000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/13\/17\/3543"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,9,6]]},"references-count":12,"journal-issue":{"issue":"17","published-online":{"date-parts":[[2021,9]]}},"alternative-id":["rs13173543"],"URL":"https:\/\/doi.org\/10.3390\/rs13173543","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2021,9,6]]}}}