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It is sometimes easy to forget how much information we can get from historical satellite data. One of our oldest land observation systems is the USGS/NASA Landsat series dating back to 1972. There have been many iterations of the Landsat platform, but it does maintain a high degree of backwards compatibility. You can read more…
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Besides using remote Sensing data in general purposes, Geospatial software such as ArcGIS Pro and QGIS Google Eathe Engine delivers a rather easy approach (although some simple coding is necessary) An interesting area is Using historical Satellites for Change Detection
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In the following articles, I try to present some of the key (mostly danish) data sets in the context they are most commonly used.
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There are many different methods for collecting GeoSpatial information as data; however, before jumping into the different methods described below, it might be adventitious to read the article “Representing Reality: How Geospatial Data Captures Phenomena” from the theoretical foundation section, especially the part about ontologies and world of discourse.
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This is really a rather complex issue and is described in several sub articles This article need rewrite to insure that it also covers aspects such as world of discourse and ontology When discussing how geospatial information is represented as geospatial data it is common to distinguish between two aspects of geospatial data namely attribute…