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- Title
PLÉIADES SATELLITES IMAGE QUALITY COMMISSIONING.
- Authors
Lebègue, Laurent; Greslou, Daniel; Blanchet, Gwendoline; de Lussy, Françoise; Fourest, Sébastien; Martin, Vincent; Latry, Christophe; Kubik, Philippe; Delvit, Jean-Marc; Dechoz, Cécile; Amberg, Virginie
- Abstract
Pléiades is the highest resolution civilian earth observing system ever developed in Europe. This imagery program is conducted by the French National Space Agency, CNES. The first satellite has been launched December 17th 2011, and the second one December 2nd 2012. Each satellite is designed to provide optical images to civilian and defense users. Images are simultaneously acquired in Panchromatic (PA) and multi-spectral (XS) mode, which allows, in nadir acquisition condition, to deliver 20 km wide, false or natural colored scenes with a 70 cm ground sampling distance after PA+XS fusion. Coverage is almost world-wide with a revisit interval of 24 h for the 2 satellites. The assessment of the image quality and the calibration operation has been performed by CNES Image Quality team during the 6 month commissioning phases that followed each satellite launch. These activities cover many topics such as absolute calibration, the normalization coefficients computation, the refocusing operations, the MTF assessment, the estimation of signal to noise ratio, the geometric model calibration, the assessment of localization accuracy, multispectral overlapping, static and dynamic stability, planimetric and altimetric accuracy. These operations required specific control of the payload and dedicated guidance of the satellite platform. The new capabilities offered by Pléiades satellites agility have allowed imagining new methods of image calibration and performances assessment. Starting from an overview of the satellite characteristics, this presentation shows all the calibration operations that were conducted during the commissioning phases and also give the main results for every image quality performance.
- Subjects
REMOTE-sensing images of Earth; IMAGE quality analysis; REMOTE-sensing images
- Publication
Revue Francaise de Photogrammetrie et de Teledetection, 2015, Issue 209, p5
- ISSN
1768-9791
- Publication type
Article
- DOI
10.52638/rfpt.2015.137