![]() ![]() To illustrate the difference between various resolutions of satellite image data, look at these two satellite images of Venice. – High to very high resolution: 30cm ‒ 5m/pixel.The finest resolution as of now is 30cm provided by very high-resolution commercial satellites. What was considered high resolution back in the 80s ‒ for example, NASA satellite data from Landsat with its 60m per pixel ‒ has become low in today’s standards. This subdivision into low, medium and high is provisional, as imaging technology advances all the time. ![]() It’s considered a medium-resolution image, which can cover an entire city area alone, but the level of detail isn’t fine enough to distinguish individual objects like houses or cars. Landsat data, for example, has a 30m resolution, meaning each pixel stands for a 30m x 30m area on the ground. A pixel is that smallest ‘dot’ that makes up an optical satellite image and basically determines how detailed a picture is. ![]() Spatial resolution refers to the size of one pixel on the ground. What Is Spatial Resolution Of Satellite Imagery Data? So you’ve decided to start using satellite data but have absolutely no idea what kind of image has the information you need? Our first tip is: figure out what spatial resolution is good for you.
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