ISRO's INSAT-3DS Satellite Successfully Commences Earth Observation Operations
by Simon Mansfield
Sydney, Australia (SPX) Mar 13, 2024
The Indian Space Research Organisation's (ISRO) meteorological satellite, INSAT-3DS, has begun its mission to observe Earth, successfully capturing its initial imagery on March 7, 2024. The satellite, launched on February 17, 2024, underwent a series of orbit-raising maneuvers before settling into its geostationary orbit on February 28, 2024.

Subsequently, it completed its In Orbit Testing (IOT) for satellite communications from February 29 to March 3, 2024, followed by the meteorological payload testing on March 7, 2024. These tests confirmed that the satellite's instruments are functioning within their specified parameters.

Equipped with advanced imaging and sounding instruments akin to its predecessors INSAT-3D and INSAT-3DR, INSAT-3DS boasts enhancements in radiometric accuracy, calibration capabilities, thermal management, and imaging efficiency. The Space Applications Centre (SAC) in Ahmedabad is credited with the design and development of these sophisticated payloads. The first set of images from the satellite was processed and disseminated by the Master Control Facility in Hasan.

INSAT-3DS's 6-channel imager captures detailed observations of the Earth's surface and atmospheric conditions across various spectral bands. This capability enables the satellite to collect data on a wide range of environmental factors, including cloud cover, aerosols, surface temperatures, vegetation health, and moisture levels in the atmosphere.

Additionally, the satellite's 19-channel sounder precisely measures the Earth's atmospheric emission, providing vital data on atmospheric constituents such as water vapor, ozone, and carbon dioxide, along with temperature variations across different atmospheric layers.

The satellite's payload generates over 40 distinct geophysical data products, addressing needs across sea surface temperature, precipitation, land surface temperature, fog intensity, and many more. This wealth of data is pivotal for enhancing weather prediction accuracy, climate monitoring, and our overall understanding of atmospheric dynamics.

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