EOS-09 or Earth Observation Satellite - 09 (formerly known as RISAT-1B) is an Indian Space Research OrganisationRadar 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.[5][6][7]
Synthetic aperture radar can be used for Earth observation irrespective of the light and weather conditions of the area being imaged.[8] It complements/supplements data from Resourcesat, Cartosat and RISAT-2B Series.[9] The satellite carries a C-bandsynthetic-aperture radar (SAR) and has a liftoff mass of 1,710 kg (3,770 lb).[2] The EOS-09 orbit is polar and Sun-synchronous at 05:30 AM LTDN, at approximate altitude of 529 km.[10]
Assembly Integration and Testing of spacecraft was done by a consortium led by Alpha Design Technologies Ltd.[11] Approximate cost of EOS-09 is ₹490 crore (equivalent to ₹550 crore or US$64 million in 2023).[12][13]
^Krebs, Gunter (8 October 2021). "RISAT 1, 1A, 1B (EOS 04)". Gunter's Space Page. Archived from the original on 26 December 2021. Retrieved 26 December 2021.
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
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