# High Resolution Microwave Radiometer
*sensor . products*

Experimental high-resolution microwave radiometer channels included in Sentinel-6 AMR-C for coastal atmospheric correction support.

## Specifications
- **manufacturer**: nasa-jpl
- **deployment context**: orbital
- **sensor**: {"instrument_family":"radiometer","measurement_principle":"passive","frequency_bands_ghz":[90,130,168],"scan_type":"static"}
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: nasa-jpl
- **attributes**: {"kind":"sensor","manufacturer":"nasa-jpl","deployment_context":"orbital","description":"Experimental high-resolution microwave radiometer channels included in Sentinel-6 AMR-C for coastal atmospheric correction support.","sensor":"{\"instrument_family\":\"radiometer\",\"measurement_principle\":\"passive\",\"frequency_bands_ghz\":[90,130,168],\"scan_type\":\"static\"}"}
- **relevance**: in-scope

## Editorial
The High Resolution Microwave Radiometer is an experimental millimetre-wave subsystem within the AMR-C microwave-radiometer context on Sentinel-6A and Sentinel-6B, scoped to coastal altimetry correction rather than an independent mission payload.[^sentinel6-payload] It uses 90, 130 and 168 GHz channels, complementing AMR-C heritage 18.7, 23.8 and 34 GHz channels used for wet-tropospheric correction.[^sentinel6-payload] Its role is to extend microwave wet-tropospheric retrievals closer to coasts under cloud-free conditions and to support Poseidon-4 high-resolution SAR mode.[^sentinel6-payload] For satellite-altimetry users, the relevant application is coastal wet-tropospheric path-delay correction support where land proximity makes standard radiometer correction harder.[^sentinel6-payload] HRMR is an experimental supporting capability with no independent HRMR mission requirements or objectives.[^sentinel6-payload]

## Compositional position
- sentinel-6b (missions) --[mission_payloads]--> High Resolution Microwave Radiometer
- sentinel-6a (missions) --[mission_payloads]--> High Resolution Microwave Radiometer

## Sources
- [sentinel6-payload] | Sentinel-6 instrument payload, Copernicus Sentinel Online | https://sentinels.copernicus.eu/missions/sentinel-6/instrument-payload | tier=agency-doc | accessed=2026-06-16
- [nasa-earthdata-s6] | Sentinel-6/Jason-CS platform, NASA Earthdata | https://www.earthdata.nasa.gov/data/platforms/space-based-platforms/sentinel-6-jason-cs | tier=agency-doc | accessed=2026-06-16

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