{"id":3912,"date":"2023-04-18T16:35:08","date_gmt":"2023-04-18T16:35:08","guid":{"rendered":"https:\/\/skywatch.com\/?p=3912"},"modified":"2024-04-17T08:34:32","modified_gmt":"2024-04-17T08:34:32","slug":"what-is-sar","status":"publish","type":"post","link":"https:\/\/skywatch.com\/what-is-sar\/","title":{"rendered":"What is SAR?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3912\" class=\"elementor elementor-3912\" 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data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7203973 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7203973\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b22c85d\" data-id=\"b22c85d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-55220ee elementor-widget elementor-widget-spacer\" data-id=\"55220ee\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div 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id=\"Content1\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3b5101e\" data-id=\"3b5101e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a6a61a8 elementor-widget elementor-widget-spacer\" data-id=\"a6a61a8\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ec1cf33 elementor-widget elementor-widget-text-editor\" data-id=\"ec1cf33\" data-element_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<p><span style=\"font-weight: 400;\">Synthetic Aperture Radar (SAR) is a specific satellite that can capture imagery in all weather conditions, day or night. SAR<\/span><span style=\"font-weight: 400;\"> sends a microwave radar signal to the earth\u2019s surface to detect physical properties. Depending on the ground feature\u2019s properties, some or all of the signal will bounce back up to the sensor creating an image of the ground.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">It<\/span><span style=\"font-weight: 400;\"> is a great tool for capturing images of areas of the world with significant cloud cover, where optical satellites cannot see through the clouds to the ground. SAR imagery can also be useful during severe weather and disaster management. The ability to capture imagery at night also increases how often the satellite can collect imagery.<\/span><\/p><p><span style=\"font-weight: 400;\">There are various SAR sensors, which are classified based on the wavelength of their radar signal that is emitted. The different SAR wavelengths are called bands and are designated by letters (ex. X, L, P).\u00a0 EarthCache has X-Band SAR, which is a common type of high resolution SAR. The use cases for SAR data vary depending on the band wavelength.<\/span><\/p><p><b>When is SAR used?<\/b><\/p><p><span style=\"font-weight: 400;\">Below are some example use cases for X-Band SAR:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Top-of-canopy analysis for vegetation management. A longer wavelength (X-band is shorter than the SAR wavelengths) is needed to get information on the lower canopy on a forest floor.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Waterbody monitoring &#8211; change in the extent of waterbodies, monitoring of wave heights<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Soil moisture measurements<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">3D modelling &#8211; SAR can be used for the generation of digital elevation models<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ground deformation or subsidence mapping &#8211; Interferometric SAR (InSAR) technique can be used to monitor the movement of the ground which can help to generate warning systems for infrastructure instability, landslides, mine wall collapses, right of way monitoring and more.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Oil spill detection and monitoring<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Port and Ship monitoring<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Flood monitoring &#8211; Good at detecting water and can be useful when clouds often coincide with flooding events.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Check out our partners who provide SAR data through our <\/span><a href=\"https:\/\/skywatch.com\/earthcache-x\/\"><span style=\"font-weight: 400;\">EarthCache-X program<\/span><\/a><span style=\"font-weight: 400;\">. Here is an example of a SAR image provided by <a href=\"https:\/\/www.iceye.com\/\">ICEYE<\/a>.<\/span><\/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-ea7cd1b elementor-widget elementor-widget-image\" data-id=\"ea7cd1b\" data-element_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\t\t\t<img decoding=\"async\" src=\"https:\/\/skywatch.com\/wp-content\/uploads\/2022\/11\/ICEYE-United_States_New_York_City_03_2020-2.webp\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\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-ed28638 elementor-widget elementor-widget-spacer\" data-id=\"ed28638\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-393a78f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"393a78f\" data-element_type=\"section\" id=\"Content2\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b81f8a5\" data-id=\"b81f8a5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-07e1586 elementor-widget elementor-widget-menu-anchor\" data-id=\"07e1586\" data-element_type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"Watch\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-99b3401 elementor-widget elementor-widget-video\" data-id=\"99b3401\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=4wGVMPyyJBY&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-58afa8c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"58afa8c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4073399\" data-id=\"4073399\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c23e0cc hidden elementor-widget elementor-widget-html\" data-id=\"c23e0cc\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style> \n.elementor-editor-active .hidden { \n    display:block; 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SAR sends a microwave radar signal to the earth\u2019s surface to detect physical properties.<\/p>\n","protected":false},"author":11,"featured_media":3914,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":""},"categories":[313],"tags":[317,226,318],"class_list":["post-3912","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-what-is-series","tag-sar","tag-sar-data","tag-what-is-sar"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/posts\/3912","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/comments?post=3912"}],"version-history":[{"count":3,"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/posts\/3912\/revisions"}],"predecessor-version":[{"id":989436,"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/posts\/3912\/revisions\/989436"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/media\/3914"}],"wp:attachment":[{"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/media?parent=3912"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/categories?post=3912"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/skywatch.com\/wp-json\/wp\/v2\/tags?post=3912"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}