Radiometric calibration of the SkySat constellation of satellites (Conference Presentation)

Andreas Brunn; Ellyne K. Kinney-Spano; Adrian Gonzalez; Joshua Greenberg; Nicolas Smith; Karim Lenhard; Sara Bahloul; Ignacio A. Zuleta

doi:10.1117/12.2325624

11 October 2018 Radiometric calibration of the SkySat constellation of satellites (Conference Presentation)

Andreas Brunn, Ellyne K. Kinney-Spano, Adrian Gonzalez, Joshua Greenberg, Nicolas Smith, Karim Lenhard, Sara Bahloul, Ignacio A. Zuleta

Author Affiliations +

Proceedings Volume 10785, Sensors, Systems, and Next-Generation Satellites XXII; 107851H (2018) https://doi.org/10.1117/12.2325624
Event: SPIE Remote Sensing, 2018, Berlin, Germany

Abstract

Planet’s mission is to image the entire Earth, every day, and make global change visible, accessible, and actionable. Planet designs, builds and launches satellites faster than any company or government in history, now operating the largest network of diversified and disaggregated sensors in orbit. Planet relies on quick iterations and space-based testing of satellites, optics, software and systems to create increasingly technology-dense and cost-effective spacecraft. Planet owns and operates fleets of over 100 Dove satellites capturing the whole earth land surface every day at 3.9m with 4 spectral bands (blue, green, red, nir), 5 RapidEye satellites capturing up to 7Mio Sqkm of land surface at 6.5m with 5 spectral bands and 13 SkySat satellites capturing 51k sqkm of earth surface at 0.72m gsd. The proposed presentation will show the full on-orbit radiometric calibration process for the SkySat constellation. This calibration includes the creation of per detector correction gain and offset tables serving the correction of non uniform response of the individual detectors. Additionally the procedures and results for the conversion of raw DN counts into absolute calibrated top of atmosphere radiance products will be shown. The latter shows the application of vicarious calibration methods based on the RadCalNet network of automated calibration sites and cross calibration between the individual satellites of the constellation, other planet owned constellations (especially RapidEye) and other available satellites like e.g. Landsat8

Conference Presentation

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Andreas Brunn, Ellyne K. Kinney-Spano, Adrian Gonzalez, Joshua Greenberg, Nicolas Smith, Karim Lenhard, Sara Bahloul, and Ignacio A. Zuleta "Radiometric calibration of the SkySat constellation of satellites (Conference Presentation)", Proc. SPIE 10785, Sensors, Systems, and Next-Generation Satellites XXII, 107851H (11 October 2018); https://doi.org/10.1117/12.2325624

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KEYWORDS

Satellites

Calibration

Planets

Sensors

Earth observing sensors

Landsat

Optical testing

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