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Assessment of EOS-04 (RISAT-1A) data calibration.
- Source :
-
Current Science (00113891) . 5/10/2024, Vol. 126 Issue 9, p1033-1040. 8p. - Publication Year :
- 2024
-
Abstract
- Radar imaging SATellite (RISAT-1A), also known as Earth observation satellite-04 (EOS-04), is a follow-on mission of India’s first indigenously developed spaceborne C-band synthetic aperture radar (SAR) on-board RISAT-1 satellite. This article provides a description of the post-launch calibration and data quality evaluation of EOS-04 launched on 14 February 2022. Calibration devices (corner reflectors) of different shapes and sizes were deployed at Ahmedabad and Amrapur calibration sites in Gujarat, India from 2 to 24 April 2022, and their response in the EOS-04 data was used to assess the radiometric and polarimetric calibration. The results of the analysis showed satisfactory radiometric and polarimetric data quality. Geolocation accuracy was assessed using the ground-surveyed position of the corner reflectors and was found to be in accordance with the specified values of less than 50 m. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SYNTHETIC aperture radar
*CALIBRATION
*REMOTE-sensing images
Subjects
Details
- Language :
- English
- ISSN :
- 00113891
- Volume :
- 126
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Current Science (00113891)
- Publication Type :
- Academic Journal
- Accession number :
- 177206510
- Full Text :
- https://doi.org/10.18520/cs/v126/i9/1033-1040