Sensor · Spaceborne

INSAT-3DR Sounder

Nineteen-channel INSAT-3DR geostationary infrared sounder for temperature and humidity profiles, stability indices, water vapour, and total column ozone.

Sensor

INSAT-3DR Sounder is the mission's 19-channel geostationary atmospheric sounder, separate from the six-channel INSAT-3DR Imager ^[1]^[2]. It uses 18 infrared sounding channels plus one visible channel for cloud and Earth context, supporting temperature and humidity vertical profiles, atmospheric stability indices, water-vapour content, and total column ozone ^[1]^[3]. The channel groups cover VIS 0.67-0.72 um, SWIR/MWIR 3.74-4.58 um, and MIR/LWIR 6.51-14.71 um; the same sounder class can place the rounded longwave limit near 14.85 um, without changing the 18-IR-plus-VIS configuration ^[1]^[3]. Ground sampling is 10 km, with full-frame sounding every 3 hours; the 6000 km by 6000 km sounding area is listed at 160 minutes ^[1]. This makes the instrument relevant for geostationary profile and stability products where vertical thermal and moisture information is more important than high-resolution scene imaging ^[1].

Operator pricing

Pricing not publicly listed by operator

Supply chain position

carried by INSAT-3DR

Sources

[1]MOSDAC INSAT-3DR payloadsagency doc2026-06-16
[2]ISRO INSAT-3DR mission pageagency doc2026-06-16
[3]WMO OSCAR instrument record: INSAT Sounderagency doc2026-06-16

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How to cite this page

Plain text

INSAT-3DR Sounder. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/products/sensor/insat-3dr-sounder (CC BY 4.0)

BibTeX

@misc{eoatlas:products:sensor:insat-3dr-sounder,
  title = {INSAT-3DR Sounder},
  author = {{EO-Atlas}},
  publisher = {SpectraWorks B.V.},
  note = {CC BY 4.0},
  url = {https://eo-atlas.org/products/sensor/insat-3dr-sounder}
}