EO·Atlas
SAR-C (EOS-04)
C-band synthetic aperture radar payload flown on EOS-04 / RISAT-1A.
SAR-C (EOS-04) is the C-band synthetic aperture radar payload flown on EOS-04 / RISAT-1A, using active microwave imaging for orbital SAR collection.[1][2][3] Its working centre frequency is 5.350 GHz, while NRSC EOS-04 material also gives 5.4 GHz for the C-band payload, so buyers should treat frequency matching as a 5.35-5.4 GHz C-band context rather than a separate sensor variant.[3][1] The instrument has multiple C-band operation modes, including Stripmap and ScanSAR hybrid-polarimetric data.[1][4] SAR backscatter, SAR backscatter change detection and polarimetric SAR decomposition are demonstrated through EOS-04.[1][4] EOS-04 launched in February 2022 and is recorded as an operational RISAT-programme satellite.[2][3]
Compositional position
- SAR backscatter imagingvia EOS-04
SAR-C on EOS-04 is a C-band synthetic aperture radar payload.
- SAR backscatter - change detectionvia EOS-04
EOS-04 SAR-C supports all-weather radar imaging applications including flood mapping.
- Polarimetric SAR - target decompositionvia EOS-04
EOS-04 calibration source describes Stripmap and ScanSAR hybrid polarimetric data used for polarimetric decomposition sensitivity analysis.
None on record.
- [1]EOS-04 (RISAT-1A) Handbook, NRSCagency doc2026-06-16
- [2]PSLV-C52/EOS-04 Mission, ISROagency doc2026-06-16
- [3]EOS-04 satellite record, WMO OSCARthird party2026-06-16
- [4]Calibration and Validation of EOS-04 Hybrid Polarimetric ScanSAR Dataagency doc2026-06-16