Sentinel-1 Extended Time Annotation Products (ETAD)
type: Dataset
modified: 2026-08-08T00:00:00.000Z
keyword: DIF10
keyword: Sentinel
keyword: Copernicus
keyword: ESA
keyword: ETAD
keyword: SAR
keyword: C-Band
keyword: EU
keyword: EC
keyword: IW
keyword: EW
keyword: SM
keyword: sentinel-1a
keyword: sentinel-1b
keyword: sentinel-1c
keyword: sentinel-1d
keyword: sar
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was generated by: Activity
  started at time: 2023-07-21T12:01:54.017Z
was generated by: Activity
  started at time: 2023-07-21T12:01:54.017Z
was generated by: Activity
  used: Sentinel-1C
  started at time: 2023-07-21T12:01:54.017Z
was generated by: Activity
  used: Sentinel-1D
  started at time: 2023-07-21T12:01:54.017Z
type: http://inspire.ec.europa.eu/metadata-codelist/ResourceType/series
language: EN
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description: This collection provides Sentinel-1 Extended Time Annotation Products (ETAD), auxiliary datasets designed to improve the geometric accuracy of Sentinel-1 SAR products. ETAD products contain multiple timing correction layers that can be applied to Sentinel-1 Interferometric Wide Swath (IW), Strip Map (SM), and Extra Wide Swath (EW) acquisitions. The data are distributed in NetCDF format and include corrections for ionospheric and tropospheric delays, solid Earth tides, and system timing effects such as Doppler shifts, bi-static corrections, and height-dependent FM-rate mismatches.
temporal: PeriodOfTime
  start date: 2023-07-21T12:01:54.017Z

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

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

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

CatalogRecord
modified: 2026-08-08T01:01:00Z
source: https://fedeo.ceos.org/collections/sentinel-1-etad
conforms to: https://joinup.ec.europa.eu/release/geodcat-ap/20

https://fedeo.ceos.org/collections/sentinel-1-etad
type: CatalogRecord
conforms to: ISO19139-2

EARTH SCIENCE>AGRICULTURE>SOILS
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

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