Lurker Posted March 28, 2015 Report Share Posted March 28, 2015 The Landsat program is a joint effort of the U.S. Geological Survey and NASA. First launched in 1972, the Landsat series of satellites has produced the longest, continuous record of Earth’s land surface as seen from space. NASA is in charge of developing remote-sensing instruments and spacecraft, launching the satellites, and validating their performance. USGS develops the associated ground systems, then takes ownership and operates the satellites, as well as managing data reception, archiving, and distribution. Since late 2008, Landsat data have been made available to all users free of charge. Carefully calibrated Landsat imagery provides the U.S. and the world with a long-term, consistent inventory of vitally important global resources. AWS has made Landsat 8 data freely available on Amazon S3 so that anyone can use our on-demand computing resources to perform analysis and create new products without needing to worry about the cost of storing Landsat data or the time required to download it. http://aws.amazon.com/public-data-sets/landsat/ 1 Quote Link to comment Share on other sites More sharing options...
maggis Posted March 6, 2019 Report Share Posted March 6, 2019 It would be less time-consuming to access Landsat data while using Landviewer. This tool has a vast database of satellite imagery that is publicly available and is updated on a regular basis. Besides that here are many tools available for image analysis and any user may use them at ease. For example, there are already ready-made tools for obtaining multispectral indices, flexible processing of data on AOI, elementary clustering, using a raster calculator, visualization of scenes in 3D using digital elevation models, changes in territories based on multi-temporal multispectral analysis, as well as creating ready-made animations of changes in terrain and so much more. You could also use WMS to connect with Landviewer satellite imagery or connect to any other CRM\ERP system via its publicly API. Here’s a brief guide to free satellite data that can be found on LandViewer: Landsat 4 - archive 1982-1993 Landsat 5 - archive 1984-2013 Landsat 7 - archive since 1999 MODIS - archive since 2012 Landsat 8 - archive since 2013 Sentinel-1 - archive since 2014 Sentinel-2 - archive since 2015 An example of such imagery can be seen below: 2100 Coruche, Portugal. Feb 13, 2019 - Land Viewer | EOS Quote Link to comment Share on other sites More sharing options...
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