EOS-04 Satellite
| |
| Names | Radar Imaging Satellite-1A |
|---|---|
| Mission type | Imaging radar |
| Operator | ISRO |
| COSPAR ID | 2022-013A  |
| SATCAT no. | 51656 |
| Website | www |
| Mission duration | 10 years (planned)[1] 2 years, 4 months, 29 days (in progress) |
| Spacecraft properties | |
| Spacecraft | EOS-04 |
| Manufacturer | Indian Space Research Organisation |
| Launch mass | 1,710 kg (3,770 lb)[1] |
| Power | 2280 watts[1] |
| Start of mission | |
| Launch date | 14 February 2022, 00:29 UTC |
| Rocket | PSLV-C52 |
| Launch site | Satish Dhawan Space Centre, First Launch Pad (FLP) |
| Contractor | Indian Space Research Organisation |
| Orbital parameters | |
| Reference system | Geocentric orbit[2] |
| Regime | Sun-synchronous orbit |
| Perigee altitude | 526.7 km (327.3 mi) |
| Apogee altitude | 543.4 km (337.7 mi) |
| Inclination | 97.6° |
| Period | 95.2 minutes |
| Instruments | |
| Synthetic Aperture Radar (C-band) (SAR-C) | |
EOS-04orEarth Observation Satellite - 04 (formerly known as RISAT-1A) is an Indian Space Research Organisation Radar Imaging Satellite designed to provide high-quality images under all weather conditions for applications such as Agriculture, Forestry & Plantations, Soil Moisture & Hydrology and Flood mapping.[3][4] It is a follow on to RISAT-1 satellite with similar configuration. The satellite is developed by the ISRO and it is the sixth in a series of RISAT satellites.
Synthetic aperture radar can be used for Earth observation irrespective of the light and weather conditions of the area being imaged.[5] It complements/supplements data from Resourcesat, Cartosat and RISAT-2B Series.[6] The satellite carries a C-band synthetic-aperture radar (SAR) and has a liftoff mass of 1,710 kg (3,770 lb).[2] The EOS-04 orbit is polar and Sun-synchronous at 06:00 AM LTDN, at approximate altitude of 529 km.[7]
Assembly Integration and Testing of spacecraft was done by a consortium led by Alpha Design Technologies Ltd.[8] Approximate cost of EOS-04 is ₹490 crore (equivalent to ₹550 crore or US$66 million in 2023).[9][10]
EOS-04 was launched on the Polar Satellite Launch Vehicle (PSLV-C52) from First Launch Pad(FLP), SDSC, SHAR, Sriharikota at 05:59 hrs IST (00:29 hrs UTC) on 14 February 2022.[6][11][12] It was launched along with two ridesharing satellites, INS-2TD a technology demonstrator by ISRO and INSPIREsat-1 a university satellite.[11]
EOS-04 captured first images on 25 February 2022 after launch.[13]
The total time taken to realize the satellite is 63 months from date of financial sanction and the expenditure towards realization of satellite is nearly Rs. 490 crore.
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