WMO OSCAR | Details for Instrument HRSAT-1

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Instrument: HRSAT-1

Instrument details

Acronym	HRSAT-1
Full name	High Resolution Satellite - 1
Purpose	High resolution land observation
Short description	Information only partially available. It should iinclude a panchromatic channel (PAN), a VIS/NIR multispectral radiometer (MX, presumably 4 channels), and a so-called LWIR channel, presumably in MWIR.
Background	New development
Scanning Technique	Push-broom, swath 15 km (PAN and MX), 6 km (LWIR). Addressable within a field-of-regard of 400 km
Resolution	1 m (PAN, 4 m (MX), 20 m (LWIR)
Coverage / Cycle	Depending on pointing strategy. Minimum I day, in daylight
Mass		Power	Data Rate

Providing Agency	ISRO
Instrument Maturity	Flown on an R&D satellite
Utilization Period:	2022 to 2029
Last update:	2022-07-27

Detailed characteristics

Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

High Resolution Satellite - 1 (ISRO)
- HRSAT-1A (see instrument status) 2025 - 2029
- HRSAT-1B (see instrument status) 2025 - 2029

Instrument classification

Earth observation instrument
Passive optical radiometer or spectrometer
High resolution optical imager

WIGOS Subcomponents No WIGOS subcomponents have been defined.

Mission objectives

Primary mission objectives

Biomass
Fire fractional cover
Fraction of vegetated land
Leaf Area Index (LAI)
Normalised Difference Vegetation Index (NDVI)
Vegetation type

Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
Note: * Primary mission objective.

Search:

Variable	Relevance for measuring this variable	Operational limitations	Explanation
Fire fractional cover*	2 - very high	Infrequent coverage.. Cloud sensitive.. Daylight only.	MWIR window channel(s) around 3.7 micrometers
Fraction of vegetated land*	2 - very high	Cloud sensitive.. Daylight only.	VIS and NIR channels
Land cover	2 - very high	Cloud sensitive.. Daylight only.	VIS and NIR channels
Normalised Difference Vegetation Index (NDVI)*	2 - very high	Cloud sensitive.. Infrequent coverage.	VIS and NIR channels
Soil type	2 - very high	Cloud sensitive.. Daylight only.	VIS and NIR channels
Cloud drop effective radius	3 - high	At cloud top.. Daylight only.. Infrequent coverage.	Channels in VIS, NIR and the MWIR window around 3.7 micrometers (for differentiation)
Cloud ice effective radius	3 - high	At cloud top.. Daylight only.. Infrequent coverage.	Channels in VIS, NIR and the MWIR window around 3.7 micrometers (for differentiation)
Fire radiative power	3 - high	Cloud sensitive.. Infrequent coverage.	MWIR window channel(s) around 3.7 micrometers
Fire temperature	3 - high	Cloud sensitive.. Infrequent coverage.	MWIR window channel(s) around 3.7 micrometers
Vegetation type*	3 - high	Cloud sensitive.. Daylight only.	VIS and NIR channels
Cloud optical depth	4 - fair	Low-density cloud only.. Infrequent coverage.. Daylight only.	VIS and NIR channels
Glacier cover	4 - fair	Cloud sensitive.. Long time for mapping.. Daylight only.	VIS and NIR channels; and panchromatic channel with high resolution, for glacier boundary detection
Land surface temperature	4 - fair	Cloud sensitive.. Infrequent coverage.. Affected by sunlight.	MWIR window channel(s) around 3.7 micrometers (high sensitivity to high temperature, cloud impact reduction)
Leaf Area Index (LAI)*	4 - fair	Cloud sensitive.. Daylight only.. Infrequent coverage.	VIS and NIR channels. LAI inferred from NDVI
Sea surface temperature	4 - fair	Cloud sensitive.. Infrequent coverage.. Affected by sunlight.	MWIR window channel(s) (cloud impact reduction)
Snow cover	4 - fair	Cloud sensitive.. Infrequent coverage.. Daylight only.	VIS, NIR and panchromatic (higher resolution) channels
Biomass*	5 - marginal	Cloud sensitive.. Index only.. Infrequent coverage.. Daylight only.	VIS and NIR channels. Biomass inferred from NDVI
Cloud cover	5 - marginal	Infrequent coverage.. Daylight only.	VIS and NIR channels
Photosynthetically Active Radiation (PAR)	5 - marginal	Cloud sensitive.. Infrequent coverage.	VIS channels, range undersampled
Short-wave cloud reflectance	5 - marginal	Infrequent coverage.	VIS and NIR channels. Unsuitable dynamic range (saturation)
Soil moisture at surface	5 - marginal	Cloud sensitive.. Index only.. Infrequent coverage.. Daylight only.	VIS and NIR channels. Soil moisture inferred from differential brightness
Upward short-wave irradiance at TOA	5 - marginal	Spectral interpolation needed.. Information on BRDF needed.. Infrequent coverage.	VIS and NIR channels
Aerosol volcanic ash	5 - marginal	Cloud sensitive.. Infrequent coverage.. Daylight only.	VIS and NIR channels
Aerosol volcanic ash Total Column	5 - marginal	Cloud sensitive.. Infrequent coverage.. Daylight only.	VIS and NIR channels
Sea-ice cover	5 - marginal	Cloud sensitive.. Daylight only.	VIS and NIR (for contour enhancement) channels

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