{"id":1207,"date":"2023-01-05T08:57:11","date_gmt":"2023-01-05T07:57:11","guid":{"rendered":"https:\/\/au.feri.um.si\/losdv\/?page_id=1207"},"modified":"2023-02-15T13:53:31","modified_gmt":"2023-02-15T12:53:31","slug":"sar_obdelava_slik","status":"publish","type":"page","link":"https:\/\/au.feri.um.si\/losdv\/en\/sar_obdelava_slik\/","title":{"rendered":"Obdelava slik z umetno odprtino &#8211; SAR"},"content":{"rendered":"<p>V laboratoriju za obdelavo signalov in daljinska vodenja se ukvarjamo z analizo slik radarja z umetno odprtino ali ang. Synthetic Aperture Radar ali na kratko SAR. Radarske slike za svoj nastanek potrebujejo izvor elektromagnetnega valovanja. Slike SAR nastanejo s po\u0161iljanjem frekven\u010dno moduliranega signala od izvora do sprejemnika. Radarske slike uporabljamo za zaznavanje sprememb, avtomatsko izlo\u010danje informacij, dolo\u010danje premikov in zaznavanje vla\u017enosti tal.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" src=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-17-1024x422.png\" alt=\"\" class=\"wp-image-1349\" width=\"768\" height=\"317\" srcset=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-17-1024x422.png 1024w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-17-300x124.png 300w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-17-768x317.png 768w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-17-18x7.png 18w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-17-360x148.png 360w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-17.png 1433w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption>Slika 1. Slika Maribora posneta s satelitom TerraSAR-X leta 2015 v RGB predstavitvi<\/figcaption><\/figure>\n\n\n\n<p>Zaznavanje sprememb<\/p>\n\n\n\n<p>S slikami SAR lahko posnamemo stanje pred in po dogodku. Na podlagi obdelave obeh slik lahko dolo\u010dimo spremembe. Slika 2 prikazuje blokovni diagram, kjer lahko ocenimo vi\u0161ino objekta prek in po dogodku. Primer je bil uporabljen leta 2015 za oceno vi\u0161ine gozdov.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" src=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-43-1024x402.png\" alt=\"\" class=\"wp-image-1425\" width=\"792\" height=\"311\" srcset=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-43-1024x402.png 1024w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-43-300x118.png 300w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-43-768x302.png 768w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-43-18x7.png 18w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-43-360x141.png 360w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-43.png 1444w\" sizes=\"(max-width: 792px) 100vw, 792px\" \/><figcaption>Slika 2. Blokovni diagram procesiranja slik za zaznavanje sprememb vi\u0161ine objektov.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" src=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-46-1024x791.png\" alt=\"\" class=\"wp-image-1429\" width=\"765\" height=\"592\" srcset=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-46-1024x791.png 1024w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-46-300x232.png 300w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-46-768x593.png 768w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-46-16x12.png 16w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-46-350x270.png 350w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-46.png 1146w\" sizes=\"(max-width: 765px) 100vw, 765px\" \/><figcaption>Slika 3. Interferometri\u010dni posnetek iz leta 2013 in 2014.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" src=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-1024x479.png\" alt=\"\" class=\"wp-image-1569\" width=\"768\" height=\"359\" srcset=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-1024x479.png 1024w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-300x140.png 300w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-768x359.png 768w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-18x8.png 18w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-360x168.png 360w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image.png 1048w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption>Slika 4. Detekcija sprememb<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"940\" height=\"316\" src=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-4.png\" alt=\"\" class=\"wp-image-1573\" srcset=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-4.png 940w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-4-300x101.png 300w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-4-768x258.png 768w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-4-18x6.png 18w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-4-360x121.png 360w\" sizes=\"(max-width: 940px) 100vw, 940px\" \/><figcaption>Slika 5. Primer zaznave sprememb v slikah SAR.<\/figcaption><\/figure>\n\n\n\n<p>\u0160tudentski ultrazvo\u010dni SAR senzor<\/p>\n\n\n\n<p>S \u0161tudenti smo izdelali ultrazvo\u010dni SAR senzor. S pomo\u010djo ultrazvoka smo generirali 50kHz frekven\u010dno modulirani signal in uporabili SAR fokusiranje.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" src=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-5.png\" alt=\"\" class=\"wp-image-1574\" width=\"647\" height=\"387\" srcset=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-5.png 862w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-5-300x180.png 300w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-5-768x460.png 768w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-5-18x12.png 18w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/02\/image-5-360x215.png 360w\" sizes=\"(max-width: 647px) 100vw, 647px\" \/><figcaption>Slika 6. Ultrazvo\u010dni senzor SAR na tra\u010dnici<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" src=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-42-1024x768.png\" alt=\"\" class=\"wp-image-1423\" width=\"768\" height=\"576\" srcset=\"https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-42-1024x768.png 1024w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-42-300x225.png 300w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-42-768x576.png 768w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-42-16x12.png 16w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-42-360x270.png 360w, https:\/\/au.feri.um.si\/losdv\/wp-content\/uploads\/sites\/4\/2023\/01\/image-42.png 1462w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption>Slika 7. Fokusirana slika SAR<\/figcaption><\/figure>","protected":false},"excerpt":{"rendered":"<p>V laboratoriju za obdelavo signalov in daljinska vodenja se ukvarjamo z analizo slik radarja z umetno odprtino ali ang. Synthetic Aperture Radar ali na kratko SAR. Radarske slike za svoj nastanek potrebujejo izvor elektromagnetnega valovanja. Slike SAR nastanejo s po\u0161iljanjem <a href=\"https:\/\/au.feri.um.si\/losdv\/en\/sar_obdelava_slik\/\" class=\"read-more\">Read More &#8230;<\/a><\/p>","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/au.feri.um.si\/losdv\/en\/wp-json\/wp\/v2\/pages\/1207"}],"collection":[{"href":"https:\/\/au.feri.um.si\/losdv\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/au.feri.um.si\/losdv\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/au.feri.um.si\/losdv\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/au.feri.um.si\/losdv\/en\/wp-json\/wp\/v2\/comments?post=1207"}],"version-history":[{"count":7,"href":"https:\/\/au.feri.um.si\/losdv\/en\/wp-json\/wp\/v2\/pages\/1207\/revisions"}],"predecessor-version":[{"id":1576,"href":"https:\/\/au.feri.um.si\/losdv\/en\/wp-json\/wp\/v2\/pages\/1207\/revisions\/1576"}],"wp:attachment":[{"href":"https:\/\/au.feri.um.si\/losdv\/en\/wp-json\/wp\/v2\/media?parent=1207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}