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Assessment of EOS-04 (RISAT-1A) data calibration.

Authors :
Sharma, Shweta
Tripathi, Saurabh
Sowkhya, B.
Arora, Pragya
Tyagi, Shivani
Sanid, C.
Agrawal, Ritesh
Babu, K. N.
Mehra, Raghav
Ramanujam, V. M.
Jayasri, P. V.
Kesarkar, Ameya A.
Gupta, Maneesha
Borsadiya, Kalpesh Kumar
Bhandari, Vimalkumar
Agrawal, Puneet K.
Rai, Raksha
Nandy, Partha Sarathi
Putrevu, Deepak
Ryali, Usha S.
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]

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