Engineering:EOS-04

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EOS-04
EOS-04 Satellite
NamesRadar Imaging Satellite-1A
Mission typeImaging radar
OperatorISRO
COSPAR ID2022-013A
SATCAT no.51656
Websitewww.isro.gov.in/launcher/pslv-c52-eos-04-mission
Mission duration10 years (planned)[1]
4 years, 7 months, 24 days (in progress)
Spacecraft properties
SpacecraftEOS-04
ManufacturerIndian Space Research Organisation
Launch mass1,710 kg (3,770 lb)[1]
Power2280 watts[1]
Start of mission
Launch date14 February 2022, 00:29 UTC
RocketPSLV-C52
Launch siteSatish Dhawan Space Centre, First Launch Pad (FLP)
ContractorIndian Space Research Organisation
Orbital parameters
Reference systemGeocentric orbit[2]
RegimeSun-synchronous orbit
Perigee altitude526.7 km (327.3 mi)
Apogee altitude543.4 km (337.7 mi)
Inclination97.6°
Period95.2 minutes
Instruments
Synthetic Aperture Radar (C-band) (SAR-C)
← EOS-03
EOS-02 →
 

EOS-04 or Earth 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.

Satellite description

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 ₹490 crore or US$69 million in 2023).[9][10]

Launch

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]

See also

References

  1. ↑ 1.0 1.1 1.2 "PSLV-C52/EOS-04 Mission". https://www.isro.gov.in/sites/default/files/pslv-c52-eos-04-v4.pdf. 
  2. ↑ 2.0 2.1 "PSLV-C52/EOS-04 Mission". ISRO. https://www.isro.gov.in/launcher/pslv-c52-eos-04-mission. 
  3. ↑ "EOS-04 - ISRO". https://www.isro.gov.in/Spacecraft/eos-04. 
  4. ↑ "CEOS Instrument: Synthetic Aperature Radiometer (RISAT)". http://ceos-sysdb.com/CEOS/db/db_instrument_low_level.php?id=790. 
  5. ↑ Raj, N. Gopal (25 April 2012). "RISAT-1's radar can see through clouds and work in darkness". The Hindu (Chennai, India). https://www.thehindu.com/sci-tech/technology/risat1s-radar-can-see-through-clouds-and-work-in-darkness/article3350204.ece. 
  6. ↑ 6.0 6.1 "PSLV-C52/EOS-04 Brochure - ISRO". https://www.isro.gov.in/pslv-c52-eos-04-mission/pslv-c52-eos-04-brochure. 
  7. ↑ Reddy, O.V. Raghav (3 February 2016). "Future Earth Observation Missions of ISRO, NRSC User Interaction Meet 2016". http://nrsc.gov.in/sites/all/pdf/modnrscUIM%20_Raghava%20Reddy_1.pdf. 
  8. ↑ Chethan Kumar (Feb 15, 2022). "isro: Consortium led by Adani-backed firm assembled, integrated and tested Isro's earth observation satellite | India News - Times of India" (in en). https://timesofindia.indiatimes.com/india/consortium-led-by-adani-backed-firm-assembled-integrated-and-tested-isros-earth-observation-satellite/articleshow/89575752.cms. 
  9. ↑ "Lok Sabha Unstarred Question No. 4446, Observation Satellite EOS-4". 30 March 2022. http://164.100.24.220/loksabhaquestions/annex/178/AU4446.pdf. "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." 
  10. ↑ Kumar, Chethan (December 1, 2021). "Teething troubles with indigenous tech cause for delay in 2 Sat launches; humidity halts SSLV - Times of India" (in en). https://timesofindia.indiatimes.com/home/science/teething-troubles-with-indigenous-tech-cause-for-delay-in-2-sat-launches-humidity-halts-sslv/articleshow/88037127.cms. 
  11. ↑ 11.0 11.1 "Successful launch of PSLV-C52 with EOS-04 Satellite - ISRO". https://www.isro.gov.in/update/14-feb-2022/successful-launch-of-pslv-c52-with-eos-04-satellite. 
  12. ↑ "14న పీఎస్‌ఎల్‌వీ ప్రయోగం" (in te). https://www.eenadu.net/telugu-news/india/general/0702/122019336. 
  13. ↑ "EOS-04, INS-2TD and INSPIRESat-1: Update - ISRO". https://www.isro.gov.in/update/26-mar-2022/eos-04-ins-2td-and-inspiresat-1-update. 

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