dataset · Global
Sentinel 1 Level-1 Ground Range Detected (GRD)
The [Sentinel-1](https://sentinel.esa.int/web/sentinel/missions/sentinel-1) mission is a constellation of two polar-orbiting satellites, operating day and night performing C-band synthetic aperture radar imaging. The Level-1 Ground Range Detected (GRD) products in this Collection consist of focused SAR data that has been detected, multi-looked and projected to ground range using the Earth ellipsoid model WGS84. The ellipsoid projection of the GRD products is corrected using the terrain height sp
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Licence: proprietary
Evidence quality: 36
Listed in planetary-computer public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata checked: 2026-10-14T13:20:00.000Z
What's in it
- Data offered llm-inferred
- C-band SAR ground range detected (GRD) imagery · multi-looked, ellipsoid-projected backscatter (WGS84)
- Coverage llm-inferred
- Global · 2014 onward (inferred from Sentinel-1 mission history; not stated in entry)
- Resolution llm-inferred
- approx. 10 m pixel spacing for IW mode (inferred from mission knowledge; not stated in entry)
- Formats llm-inferred
- GeoTIFF (COG) · STAC
- Access llm-inferred
- Free access via Microsoft Planetary Computer; no auth recorded in entry (auth: null). Entry licence is 'proprietary', which conflicts with the usual Copernicus open terms for Sentinel-1; verify before commercial use.
Useful for
- Use cases llm-inferred
- Flood extent mapping from pre- and post-event SAR for FRA evidence · Surface water and inundation change monitoring for catchment and drainage studies · Wetland and inundation baseline mapping for ecological or BNG-related assessments · Land-surface change screening for civils and site baselines
- Audience llm-inferred
- flood consultants · hydrologists · GIS analysts · ecologists
Limitations
- Constraints llm-inferred
- GRD is amplitude-only with speckle, so filtering is needed; it does not support InSAR (requires SLC data) · Licence recorded as 'proprietary' conflicts with typical Copernicus open terms; verify · No UK-specific coverage in entry (area is Global) · Radar geometry effects (look angle, wind-roughened water, urban layover) affect interpretation · Entry description is truncated, so terrain-correction processing is not fully confirmed
Evidence
- https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-1-grd
- https://planetarycomputer.microsoft.com/dataset/sentinel-1-grd
Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.