OPERA Radiometric Terrain Corrected SAR Backscatter from Sentinel-1 (Version 1)
type: Dataset
keyword: c-sar
keyword: sar
keyword: sentinel-1
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keyword: sentinel-1c
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  agent: Organization
    has URL: https://asf.alaska.edu/
    has name: ASF
  had role: processor
endpoint description: https://fedeo.ceos.org/collections/series/items/opera-s1-rtc-v1/api
keyword: DIF10
keyword: rtc
keyword: synthetic aperture radar
keyword: sentinel-1b
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description: The Observational Products for End-Users from Remote Sensing Analysis (OPERA) Radiometric Terrain Corrected (RTC) SAR Backscatter from Sentinel-1 (S1) validated product consists of radar backscatter normalized with respect to the topography. The product maps signals related to the physical properties of ground scattering objects, such as surface roughness and soil moisture and/or vegetation. The OPERA RTC-S1 product is derived from Copernicus Sentinel-1 Interferometric Wide (IW) Single Look Complex (SLC) data with a near-global scope and temporal sampling coincident with the availability of S1 SLC data.Each OPERA RTC-S1 product corresponds to a single S1 burst projected onto a pre-defined UTM/Polar stereographic map grid with 30-metre spacing. The Copernicus global 30 m (GLO-30) Digital Elevation Model (DEM) is the reference DEM used for topographic correction and geocoding. The product is normalized to the gamma-naught (Î³0) backscatter coefficient and distributed as Cloud Optimized GeoTIFFs (one per polarization), with metadata in HDF5 and ISOâ 19115-2 XML formats.Static radar-geometry layers (incidence angle, local incidence angle, number of looks, RTC Area Normalization Factor) are provided separately as the OPERA RTC-S1-STATIC product.The OPERA RTC-S1 product contains modified Copernicus Sentinel data (2014âpresent). The OPERA project is funded by NASAâs Satellite Needs Working Group (SNWG).
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identifier: Identifier
  notation: https://doi.org/10.71570/sqpg-0564
  creator: https://doi.org/
was generated by: Activity
  started at time: 2016-04-14T00:00:00Z
modified: 2026-08-07T00:00:00.000Z
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keyword: gamma-0
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language: EN
keyword: sentinel-1a
keyword: radiometric terrain correction
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keyword: backscatter
keyword: earth observation
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keyword: c-band
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contact point: Organization
  has URL: https://www.jpl.nasa.gov/
  has name: NASA JPL
keyword: nasa
was generated by: Activity
  used: Sentinel-1C
  started at time: 2016-04-14T00:00:00Z
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type: http://inspire.ec.europa.eu/metadata-codelist/ResourceType/series
keyword: jpl
temporal: PeriodOfTime
  start date: 2016-04-14T00:00:00Z
keyword: land surface
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keyword: opera

CatalogRecord
source: https://fedeo.ceos.org/collections/series/items/opera-s1-rtc-v1
modified: 2026-08-07T00:58:08Z
conforms to: https://joinup.ec.europa.eu/release/geodcat-ap/20

https://fedeo.ceos.org/collections/series/items/opera-s1-rtc-v1
type: CatalogRecord
conforms to: ISO19139-2

EARTH SCIENCE>OCEANS>OCEAN OPTICS>BACKSCATTER
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

EARTH SCIENCE>AGRICULTURE>SOILS
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

Sentinel-1A
type: Entity
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms
type: Concept

Sentinel-1B
type: Entity
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms
type: Concept

C-SAR
type: Entity
in scheme: https://earth.esa.int/concepts/concept_scheme/instruments
type: Concept

Sentinel-1
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

Sentinel-1B
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms

C-SAR
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments

Sentinel-1
type: Entity
in scheme: https://earth.esa.int/concepts/concept_scheme/platforms
type: Concept

EARTH SCIENCE>LAND SURFACE
type: Concept
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EARTH SCIENCE>SPECTRAL/ENGINEERING>RADAR
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

Sentinel-1A
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms