Item talk:Q56073

{

 "USGS Publications Warehouse": {
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     "additionalType": "USGS Numbered Series",
     "name": "System characterization report on Planet\u2019s Dove Classic",
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         "value": "ofr20211030C",
         "url": "https://pubs.usgs.gov/publication/ofr20211030C"
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         "value": 70222385
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         "propertyID": "DOI",
         "value": "10.3133/ofr20211030C",
         "url": "https://doi.org/10.3133/ofr20211030C"
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     "inLanguage": "en",
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     "datePublished": "2021",
     "dateModified": "2021-08-25",
     "abstract": "Executive SummaryThis report addresses system characterization of Planet\u2019s Dove Classic satellites and is part of a series of system characterization reports produced and delivered by the U.S. Geological Survey Earth Resources Observation and Science Cal/Val Center of Excellence. These reports present and detail the methodology and procedures for characterization; present technical and operational information about the specific sensing system being evaluated; and provide a summary of test measurements, data retention practices, data analysis results, and conclusions.Since 2013, Planet has launched more than 360 Dove 3U CubeSats, where U stands for 10-centimeter (cm) x 10-cm x 10-cm stowed dimensions, each weighing about 5 kilograms. Since 2015, all Dove satellites have had four-band imagers with about a 4-meter (m) pixel ground sample distance. Since 2016, all Doves have been launched into Sun-synchronous orbits varying from 474 to 524 kilometers, with inclinations between 97 and 98 degrees. The Dove series satellites do not have orbit maintenance capabilities; thus, their orbits decay slowly over time, contributing to shorter lifetimes of about 3 years. More information on Planet satellites and sensors is available in the \u201c2020 Joint Agency Commercial Imagery Evaluation\u2014Remote Sensing Satellite Compendium\u201d and from the manufacturer at https://www.planet.com/.The Earth Resources Observation and Science Cal/Val Center of Excellence system characterization team completed data analyses to characterize the geometric (interior and exterior), radiometric, and spatial performances. Results of these analyses indicate that Dove Classic has an interior geometric performance in the range of \u22120.218 (\u22120.073 pixel) to \u22120.037 m (\u22120.012 pixel) in easting and \u22120.167 (\u22120.056 pixel) to \u22120.111 m (\u22120.037 pixel) in northing in band-to-band registration, an exterior geometric error of \u22126.841 (\u22122.280 pixels) in easting and \u22126.235 m (\u22122.078 pixels) in northing offset in comparison to Landsat 8 Operational Land Imager, a radiometric performance in the range of \u22120.057 to \u22120.010 in offset and 0.963 to 1.298 in slope, and a spatial performance in the range of 2.77 to 3.35 pixels for full width at half maximum, with a modulation transfer function at a Nyquist frequency in the range of 0.003 to 0.010.",
     "description": "v, 28 p.",
     "publisher": {
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       "name": "U.S. Geological Survey"
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     "author": [
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         "@type": "Person",
         "name": "Stensaas, Gregory L. stensaas@usgs.gov",
         "givenName": "Gregory L.",
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