{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T00:03:41Z","timestamp":1783641821725,"version":"3.55.0"},"reference-count":21,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2016,3,10]],"date-time":"2016-03-10T00:00:00Z","timestamp":1457568000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>This paper develops a continuous tangent motion model by approximating the relative trajectories between spaceborne Synthetic Aperture Radar (SAR) and its targets during every transmitting period and every receiving period as tangential segments. Compared with existing motion models, including the stop-go model and the continuous rectilinear model, the continuous tangent model is much closer to the actual relative motion. Based on the new motion model, an imaging compensation algorithm is proposed that considers the space-variant property of SAR echoes more fully by introducing three space-variant factors: the time-scaling factor, the transmitting\u2013receiving rate, and the transmitting\u2013receiving constant. As a result, spaceborne SAR imaging with 0.21-meter resolution and wide-swath, up to 15 km \u00d7 15 km, is achieved. Simulation results indicate that the novel algorithm provides a superior and more consistent focusing quality across the whole swath compared with existing algorithms based on the stop-go or continuous rectilinear models.<\/jats:p>","DOI":"10.3390\/rs8030223","type":"journal-article","created":{"date-parts":[[2016,3,10]],"date-time":"2016-03-10T10:53:48Z","timestamp":1457607228000},"page":"223","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["An Imaging Compensation Algorithm for Spaceborne High-Resolution SAR Based on a Continuous Tangent Motion Model"],"prefix":"10.3390","volume":"8","author":[{"given":"Ze","family":"Yu","sequence":"first","affiliation":[{"name":"School of Electronics and Information Engineering, BeiHang University, Beijing 100191, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shusen","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Electronics and Information Engineering, BeiHang University, Beijing 100191, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhou","family":"Li","sequence":"additional","affiliation":[{"name":"Beijing Institute of Remote Sensing Information, Beijing 100192, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2016,3,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Sadjadi, F. (2014, January 19\u201323). New comparative experiments in range migration mitigation methods using polarimetric inverse synthetic aperture radar signatures of small boats. Proceedings of the 2014 IEEE Radar Conference, Cincinnati, OH, USA.","DOI":"10.1109\/RADAR.2014.6875664"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Sadjadi, F.A. (2014, January 5\u20139). New Experiments in Inverse synthetic aperture radar image exploitation for maritime surveillance. Proceedings of the SPIE Defense+ Security, 2014 International Society for Optics and Photonics, Baltimore, MD, USA.","DOI":"10.1117\/12.2053797"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"3903","DOI":"10.1109\/JSEN.2014.2356580","article-title":"Integrated wireless sensor systems via near-space and satellite platforms: A review","volume":"14","author":"Wang","year":"2014","journal-title":"IEEE Sens. J."},{"key":"ref_4","unstructured":"Cumming, I.G., and Wong, F.H. (2005). Digital Processing of Synthetic Aperture Radar Data: Algorithms and Implementation, Artech House."},{"key":"ref_5","unstructured":"Curlander, J., and McDonough, R. (1991). Synthetic Aperture Radar: Systems and Signal Processing, John Wiley & Sons."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"8224","DOI":"10.3390\/s8128224","article-title":"A Modified subpulse SAR processing procedure based on the range-doppler algorithm for synthetic wideband waveforms","volume":"8","author":"Lim","year":"2008","journal-title":"Sensors"},{"key":"ref_7","unstructured":"Bamler, R., Breit, H., Steinbrecher, U., and Just, D. (1993, January 18\u201321). Algorithms for X-SAR processing. Proceedings of the International Geoscience and Remote Sensing Symposium, Tokyo, Japan."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1292","DOI":"10.3390\/rs5031292","article-title":"Azimuth-variant signal processing in high-altitude platform passive SAR with spaceborne\/airborne transmitter","volume":"5","author":"Wang","year":"2013","journal-title":"Remote Sens."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1109\/7.481254","article-title":"A chirp scaling approach for processing squint mode SAR data","volume":"32","author":"Davidson","year":"1996","journal-title":"IEEE Trans. Aerosp. Electron. Syst."},{"key":"ref_10","unstructured":"Janoth, J., Gantert, S., Schrage, T., and Kaptein, A. (2014, January 3\u20135). From TerraSAR-X towards TerraSAR next generation. Proceedings of the 10th European Conference on Synthetic Aperture Radar, Berlin, Germany."},{"key":"ref_11","unstructured":"Novak, L.M., Benitz, G.R., Owirka, G.J., and Bessette, L.A. (1996, January 10). ATR performance using enhanced resolution SAR, aerospace\/defense sensing and controls. Proceedings of the International Society for Optics and Photonics, Orlando, FL, USA."},{"key":"ref_12","first-page":"11","article-title":"Performance of a high-resolution polarimetric SAR automatic target recognition system","volume":"6","author":"Novak","year":"1993","journal-title":"Lincoln Lab. J."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"6003","DOI":"10.1109\/TGRS.2013.2294353","article-title":"On the processing of very high resolution spaceborne SAR data","volume":"52","author":"Scheiber","year":"2014","journal-title":"IEEE Trans. Geosci. Remote Sen."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"3695","DOI":"10.1109\/TGRS.2013.2274821","article-title":"The TerraSAR-X staring spotlight mode concept","volume":"52","author":"Mittermayer","year":"2014","journal-title":"IEEE Trans. Geosci. Remote Sen."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"933","DOI":"10.1109\/TGRS.2011.2162243","article-title":"Echo model analyses and imaging algorithm for high-resolution SAR on high-speed platform","volume":"50","author":"Liu","year":"2012","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"3519","DOI":"10.1109\/TGRS.2007.906140","article-title":"Signal processing for FMCW SAR","volume":"45","author":"Meta","year":"2007","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"396","DOI":"10.1109\/LGRS.2010.2078486","article-title":"Time-domain reconstruction algorithms for FMCW-SAR","volume":"8","author":"Ribalta","year":"2011","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_18","unstructured":"Teng, L., Wu, J., Huang, Y., and Yang, J. (2012, January 18\u201320). A deramping based Omega-k algorithm for wide scene spotlight SAR. Proceedings of the International Conference on Systems and Informatics, Yantai, China."},{"key":"ref_19","unstructured":"Carrara, W.G., Goodman, R.S., and Majewski, R.M. (1995). Spotlight Synthetic Aperture Radar: Signal Processing Algorithms, Artech House."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"2198","DOI":"10.1109\/36.789617","article-title":"Spotlight SAR data processing using the frequency scaling algorithm","volume":"37","author":"Mittermayer","year":"1999","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_21","unstructured":"Wang, G.D. (2004, January 18\u201321). A deramp chirp scaling algorithm for processing spaceborne spotlight SAR data. Proceedings of the ICMMT 4th International Conference on Microwave and Millimeter Wave Technology, Beijing, China."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/8\/3\/223\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T19:20:30Z","timestamp":1760210430000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/8\/3\/223"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,3,10]]},"references-count":21,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2016,3]]}},"alternative-id":["rs8030223"],"URL":"https:\/\/doi.org\/10.3390\/rs8030223","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2016,3,10]]}}}