# Argos-4 Data Collection System
*sensor . products*

Data collection and relay instrument flown on EOS-06 / Oceansat-3.

## Specifications
- **product status**: operational
- **deployment context**: orbital
- **manufacturer**: isro
- **sensor**: {"instrument_family":"radiometer","measurement_principle":"passive","frequency_bands_ghz":[0.40165],"notes":"Argos-4 is a data collection/relay instrument rather than an EO retrieval sensor. Atlas has no data-collection payload sensor family; this candidate uses the closest schema branch with low confidence pending curator modelling."}
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: isro
- **attributes**: {"kind":"sensor","product_status":"operational","deployment_context":"orbital","manufacturer":"isro","description":"Data collection and relay instrument flown on EOS-06 / Oceansat-3.","sensor":"{\"instrument_family\":\"radiometer\",\"measurement_principle\":\"passive\",\"frequency_bands_ghz\":[0.40165],\"notes\":\"Argos-4 is a data collection/relay instrument rather than an EO retrieval sensor. Atlas has no data-collection payload sensor family; this candidate uses the closest schema branch with low confidence pending curator modelling.\"}"}
- **relevance**: ancillary

## Compositional position
- oceansat-3 (missions) --[mission_payloads]--> Argos-4 Data Collection System

## Sources
- [wmo-argos4] | WMO OSCAR instrument record: Argos-4 | https://space.oscar.wmo.int/instruments/view/argos_4 | tier=agency-doc | accessed=2026-06-16
- [noaa-argos-dcs] | Argos Data Collection and location System, NOAA OSPO | https://www.ospo.noaa.gov/operations/dcs/argos/index.html | tier=agency-doc | accessed=2026-06-16
- [cnes-argos] | Argos programme overview, CNES | https://cnes.fr/en/projects/argos | tier=agency-doc | accessed=2026-06-16
- [isro-eos06] | EOS-06 mission page, ISRO | https://www.isro.gov.in/EOS_06.html | tier=agency-doc | accessed=2026-06-16

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Source: https://eo-atlas.org/products/sensor/argos-4
Maintainer: SpectraWorks B.V. (CC-BY 4.0)