# LISS-IV
*sensor . products*

High-resolution three-band passive optical imager flown on Resourcesat missions.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: isro
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spectral_range_nm":{"min":520,"max":860},"spectral_band_count":3,"gsd_m":{"native":5.8},"swath_km":70,"bit_depth":10,"bands":[{"name":"Green","centre_nm":555,"fwhm_nm":70},{"name":"Red","centre_nm":650,"fwhm_nm":60},{"name":"NIR","centre_nm":815,"fwhm_nm":90}]}
- **entity type**: sensor
- **last verified date**: 2026-06-15
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: isro
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"isro","description":"High-resolution three-band passive optical imager flown on Resourcesat missions.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":520,\"max\":860},\"spectral_band_count\":3,\"gsd_m\":{\"native\":5.8},\"swath_km\":70,\"bit_depth\":10,\"bands\":[{\"name\":\"Green\",\"centre_nm\":555,\"fwhm_nm\":70},{\"name\":\"Red\",\"centre_nm\":650,\"fwhm_nm\":60},{\"name\":\"NIR\",\"centre_nm\":815,\"fwhm_nm\":90}]}"}
- **relevance**: in-scope

## Editorial
LISS-IV (Linear Imaging Self-Scanning Sensor 4) is a high-resolution three-band passive optical imager developed by ISRO for the Resourcesat series of land observation satellites.[^isro-resourcesat-2][^wmo-liss-iv] It provides the finest spatial detail within the Resourcesat imaging complement, suited to applications requiring sub-10 m ground resolution.

The instrument covers Green (555 nm), Red (650 nm), and Near-Infrared (815 nm) bands at 5.8 m spatial resolution and 10-bit radiometric depth.[^wmo-liss-iv][^isro-resourcesat-2] LISS-IV operates in two modes: a mono mode in which all three cameras image the same spectral band to produce a 70 km combined swath, and a multispectral mode in which each of the three cameras covers a different band to yield a 23.9 km swath with full three-band coverage.[^wmo-liss-iv][^eoportal-resourcesat-2]

LISS-IV flies on Resourcesat-2 and Resourcesat-2A alongside the medium-resolution LISS-III and the wide-swath AWiFS sensors.[^isro-resourcesat-2] Its three-band VIS-NIR spectral range supports vegetation index mapping, high-resolution land use change detection, agricultural monitoring, and multi-date image analysis.[^eoportal-resourcesat-2]

## Compositional position
- resourcesat-2 (missions) --[mission_payloads]--> LISS-IV
- resourcesat-2a (missions) --[mission_payloads]--> LISS-IV

## Sources
- [wmo-liss-iv] | LISS-4 - WMO OSCAR instrument record | https://space.oscar.wmo.int/instruments/view/liss_4 | tier=agency-doc | accessed=2026-06-15
- [isro-resourcesat-2] | RESOURCESAT-2 - ISRO | https://www.isro.gov.in/RESOURCESAT_2.html | tier=agency-doc | accessed=2026-06-15
- [eoportal-resourcesat-2] | Resourcesat-2 mission - eoPortal | https://eoportal.org/web/eoportal/satellite-missions/r/resourcesat-2 | tier=community | accessed=2026-06-15

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Source: https://eo-atlas.org/products/sensor/liss-iv
Maintainer: SpectraWorks B.V. (CC-BY 4.0)