EOS-04 or Earth Observation Satellite - 04 (formerly known as RISAT-1A) is an

Indian Space Research Organisation The Indian Space Research Organisation (ISRO ) is India's national List of government space agencies, space agency, headquartered in Bengaluru, Karnataka. It serves as the principal research and development arm of the Department of Space (DoS), ...

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. It is a follow on to

RISAT-1 Radar Imaging Satellite 1 or RISAT-1, was an Indian remote sensing satellite built and operated by the Indian Space Research Organisation (ISRO). The second RISAT satellite to be launched, it used a C-band 5.35 GHz synthetic-aperture radar ( ...

satellite with similar configuration. The satellite is developed by the ISRO and it is the sixth in a series of

RISAT RISAT (Radar Imaging Satellite) is a series of Indian radar imaging reconnaissance satellites built by the ISRO, Indian Space Research Organization (ISRO). They provide all-weather surveillance using synthetic aperture radars (SAR). The ''RIS ...

satellites.

Satellite description

Synthetic aperture radar can be used for

Earth observation Earth observation (EO) is the gathering of information about the physical, chemical, and biosphere, biological systems of the planet Earth. It can be performed via remote sensing, remote-sensing technologies (Earth observation satellites) or throu ...

irrespective of the light and weather conditions of the area being imaged. It complements/supplements data from Resourcesat,

Cartosat The Cartosat is a series of Indian optical Earth observation satellites built and operated by the Indian Space Research Organisation (ISRO). The Cartosat series is a part of the Indian Remote Sensing Program. They are used for Earth's resource ...

and RISAT-2B Series. The satellite carries a

C-band C band may refer to: * C band (IEEE), a radio frequency band from 4 to 8 GHz * C band (infrared), an infrared band from 1530 to 1565 nm (roughly 200 THz) * C band (NATO) The NATO C-band is the obsolete designation given to the radio frequen ...

synthetic-aperture radar Synthetic-aperture radar (SAR) is a form of radar that is used to create two-dimensional images or three-dimensional reconstructions of objects, such as landscapes. SAR uses the motion of the radar antenna over a target region to provide fine ...

(SAR) and has a liftoff mass of . The EOS-04 orbit is polar and Sun-synchronous at 06:00 AM LTDN, at approximate altitude of 529 km. Assembly Integration and Testing of spacecraft was done by a consortium led by Alpha Design Technologies Ltd. Approximate cost of EOS-04 is .

Launch

EOS-04 was launched on the

Polar Satellite Launch Vehicle The Polar Satellite Launch Vehicle (PSLV) is an expendable medium-lift launch vehicle designed and operated by the Indian Space Research Organisation (ISRO). It was developed to allow India to launch its Indian Remote Sensing (IRS) satellite ...

(PSLV-C52) from First Launch Pad(FLP), SDSC, SHAR, Sriharikota at 05:59 hrs IST (00:29 hrs

UTC Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communica ...

) on 14 February 2022. It was launched along with two ridesharing satellites, INS-2TD a technology demonstrator by ISRO and INSPIREsat-1 a university satellite. EOS-04 captured first images on 25 February 2022 after launch.

References

Earth observation satellites of India Space synthetic aperture radar Spacecraft launched by India in 2022 RISAT {{India-spacecraft-stub

Satellite description

Launch

See also

References