{"id":36673,"date":"2025-02-20T17:06:06","date_gmt":"2025-02-20T16:06:06","guid":{"rendered":"https:\/\/aubin.telecomste.fr\/satellite-radar-imagery-a-tool-for-earth-observation\/"},"modified":"2026-07-17T23:38:04","modified_gmt":"2026-07-17T21:38:04","slug":"satellite-radar-imagery-a-tool-for-earth-observation","status":"publish","type":"page","link":"https:\/\/aubin.telecomste.fr\/en\/research\/research-areas\/satellite-radar-imagery-a-tool-for-earth-observation\/","title":{"rendered":"Satellite radar imagery, a tool for Earth observation"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"36673\" class=\"elementor elementor-36673 elementor-32388\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6e0f812 e-con-full e-flex e-con e-parent\" data-id=\"6e0f812\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-18599f76 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"18599f76\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Synthetic Aperture Radar (SAR) imaging is an active imaging technique that can be used day and night to \u201csee\u201d through clouds. It involves emitting an electromagnetic wave of centimetric wavelength and recording the echoes returned from the ground. <\/h3><p>Radar imagery is increasingly used in Earth observation. The wealth of information contained in these images (polarimetric and interferometric information) and the different response of the environment compared to optical wavelengths, enable us to better monitor the evolution of our planet. At T\u00e9l\u00e9com Saint-Etienne, work has been carried out to study tropical forests (in preparation for the European BIOMASS satellite mission, to be launched in 2022), characterize the urban environment (in collaboration with T\u00e9l\u00e9com Paris, ONERA and the University of Rennes) and monitor freshwater reserves in lakes and rivers (in preparation for the CNES-NASA SWOT satellite mission, to be launched in 2021).  <\/p><p>Radar tomography combines several images (typically between 4 and a few dozen) and reconstructs three-dimensional information by analyzing the phase shift seen by different radar antenna positions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54b63036 elementor-widget elementor-widget-image\" data-id=\"54b63036\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<noscript><img fetchpriority=\"high\" decoding=\"async\" width=\"1077\" height=\"430\" src=\"https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie.jpg\" class=\"attachment-full size-full wp-image-34587\" alt srcset=\"https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie.jpg 1077w, https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie-512x204.jpg 512w, https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie-1024x409.jpg 1024w, https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie-256x102.jpg 256w, https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie-768x307.jpg 768w\" sizes=\"(max-width: 1077px) 100vw, 1077px\"><\/noscript><img loading=\"lazy\" decoding=\"async\" width=\"1077\" height=\"430\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%201077%20430%22%3E%3C%2Fsvg%3E\" class=\"attachment-full size-full wp-image-34587 lazyload\" alt srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%201077%20430%22%3E%3C%2Fsvg%3E 1077w\" sizes=\"auto, (max-width: 1077px) 100vw, 1077px\" data-srcset=\"https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie.jpg 1077w, https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie-512x204.jpg 512w, https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie-1024x409.jpg 1024w, https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie-256x102.jpg 256w, https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie-768x307.jpg 768w\" data-src=\"https:\/\/aubin.telecomste.fr\/wp-content\/uploads\/2025\/02\/tomograpie.jpg\" loading=\"lazy\">\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Exemple de reconstruction de donn\u00e9es tridimensionnelles gr\u00e2ce \u00e0 la tomographie radar<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Research led by Lo\u00efc Denis, MCF HDR, Hubert Curien laboratory, Image Science &amp; Computer Vision team.<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":36712,"menu_order":121,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-36673","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - 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