{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T11:17:15Z","timestamp":1780053435419,"version":"3.54.0"},"reference-count":26,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2019,12,6]],"date-time":"2019-12-06T00:00:00Z","timestamp":1575590400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000844","name":"European Space Agency","doi-asserted-by":"publisher","award":["4000118576\/16\/NL\/FF\/MG"],"award-info":[{"award-number":["4000118576\/16\/NL\/FF\/MG"]}],"id":[{"id":"10.13039\/501100000844","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001859","name":"Swedish National Space Agency","doi-asserted-by":"publisher","award":["164-16"],"award-info":[{"award-number":["164-16"]}],"id":[{"id":"10.13039\/501100001859","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Hildur and Sven Wingquist Foundation for Forest Research","award":["M\u00e4ttorn f\u00f6r tidsserieanalys"],"award-info":[{"award-number":["M\u00e4ttorn f\u00f6r tidsserieanalys"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Ground-based tomographic radar measurements provide valuable knowledge about the electromagnetic scattering mechanisms and temporal variations of an observed scene and are essential in preparation for space-borne tomographic synthetic aperture radar (SAR) missions. Due to the short range between the radar antennas and a scene being observed, the tomographic radar observations are affected by several systematic errors. This article deals with the modelling and calibration of three systematic errors: mutual antenna coupling, magnitude and phase errors and the pixel-variant impulse response of the tomographic image. These errors must be compensated for so that the tomographic images represent an undistorted rendering of the scene reflectivity. New calibration methods were described, modelled and validated using experimental data. The proposed methods will be useful for future ground-based tomographic radar experiments in preparation for space-borne SAR missions.<\/jats:p>","DOI":"10.3390\/rs11242924","type":"journal-article","created":{"date-parts":[[2019,12,6]],"date-time":"2019-12-06T10:41:44Z","timestamp":1575628904000},"page":"2924","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Calibration of a Ground-Based Array Radar for Tomographic Imaging of Natural Media"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6086-9328","authenticated-orcid":false,"given":"Albert R.","family":"Monteith","sequence":"first","affiliation":[{"name":"Department of Space, Earth and Environment, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5757-9517","authenticated-orcid":false,"given":"Lars M. 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