ESA/ESRIN
EC
This collection offers Sentinel-1 Level-1 Single Look Complex (SLC) products captured in the modes Interferometric Wide Swath (IW), Extra Wide Swath (EW), and Strip Map Mode (SM). Level-1 SLC products are images in the slant range by azimuth imaging plane, in the image plane of satellite data acquisition. Each image pixel is represented by a complex (I and Q) magnitude value and therefore contains both amplitude and phase information. Each I and Q value is 16 bits per pixel. The processing for all SLC products results in a single look in each dimension using the full available signal bandwidth. The imagery is geo-referenced using orbit and attitude data from the satellite. SLC images are produced in a zero Doppler geometry. This convention is common with the standard slant range products available from other SAR sensors.
Sentinel-1 Single Look Complex: IW, EW, SM
EARTH SCIENCE>AGRICULTURE>SOILS
C-SAR
Sentinel
Copernicus
ESA
SLC
SAR
C-Band
EU
IW
EW
SM
sar

Sentinel-1 Extended Time Annotation Products (ETAD)
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.
EARTH SCIENCE>AGRICULTURE>SOILS
C-SAR
Sentinel
Copernicus
ESA
ETAD
SAR
C-Band
EU
EC
IW
EW
SM
sar

Sentinel-1 Level-1 Ground Range Detected (GRD) products
Level-1 Ground Range Detected (GRD) products consist of focused SAR data that has been detected, multi-looked and projected to ground range using an Earth ellipsoid model such as WGS84. The ellipsoid projection of the GRD products is corrected using the terrain height specified in the product general annotation. The terrain height used varies in azimuth but is constant in range. Ground range coordinates are the slant range coordinates projected onto the ellipsoid of the Earth. Pixel values represent detected amplitude. Phase information is lost. The resulting product has approximately square resolution pixels and square pixel spacing with reduced speckle at a cost of reduced spatial resolution. For the IW GRD products, multi-looking is performed on each burst individually. All bursts in all sub-swaths are then seamlessly merged to form a single, contiguous, ground range, detected image per polarisation.
EARTH SCIENCE>SPECTRAL/ENGINEERING>RADAR
EARTH SCIENCE>AGRICULTURE>SOILS
EARTH SCIENCE>SPECTRAL/ENGINEERING>RADAR>RADAR BACKSCATTER
C-SAR
vito
terrascope
copernicus
esa
sentinel
orthoimagery
ground
c-sar
radar
radar backscatter
sar
ESA/ESRIN

Sentinel-1 Level-2 Ocean (OCN): IW, EW, SM
This collection offers Sentinel-1 Level-2 Ocean (OCN) products captured in Wave Mode (WV). Level-2 OCN products are specifically processed radar data. These products consist of geo-located geophysical parameters derived from Sentinel-1 Level-1 SAR data and are composed of three components: an Ocean Swell Spectra (OSW) component, an Ocean Wind Field (OWI) component, and a Radial Velocity (RVL) component. The OWI component is a ground-range gridded estimate of the surface wind speed and direction at 10 m above the surface. The OSW component is a two-dimensional ocean surface swell spectrum and includes an estimate of wind speed and direction for each swell spectrum. The OSW component provides continuous measurements of SAR swell spectra at C-band. The RVL surface radial velocity component is a ground-range gridded difference between the measured Level-2 Doppler grid and the geometrical Doppler calculated from Level-1 data. The RVL component provides continuity with the ASAR Doppler grid. OCN products are generated from all four Sentinel-1 imaging modes. In SM mode, the OCN product contains all three components. In IW and EW modes, the OCN product contains only OWI and RVL. In WV mode, the OCN product contains only OSW and RVL.
Sentinel
Copernicus
ESA
OCN
Ocean
SAR
C-Band
EU
EC
IW
EW
SM
OSW
OWI
RVL

ESA/ESRIN
Level-1 Ground Range Detected (GRD) products 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 specified in the product general annotation. The terrain height used varies in azimuth and it is constant in range (For IW/EW modes only the terrain height of first subswath is considered)
Sentinel-1 Ground Range Detected (GRD)
EARTH SCIENCE>SPECTRAL/ENGINEERING>RADAR
GRD

Sentinel-1 Level-1 Single Look Complex (SLC) products
Level-1 Single Look Complex (SLC) products consist of focused SAR data, geo-referenced using orbit and attitude data from the satellite, and provided in slant-range geometry. Slant range is the natural radar range observation coordinate, defined as the line-of-sight from the radar to each reflecting object. The products are in zero-Doppler orientation where each row of pixels represents points along a line perpendicular to the sub-satellite track. The products include a single look in each dimension using the full available signal bandwidth and complex samples (real and imaginary) preserving the phase information. The Interferometric Wide (IW) swath mode is the main acquisition mode over land and satisfies the majority of service requirements. It acquires data with a 250 km swath at 5 m by 20 m spatial resolution (single look). IW mode captures three sub-swaths using Terrain Observation with Progressive Scans SAR (TOPSAR). IW SLC products contain one image per sub-swath and one per polarisation channel, for a total of three (single polarisation) or six (dual polarisation) images in an IW product. Each sub-swath image consists of a series of bursts, where each burst has been processed as a separate SLC image. The individually focused complex burst images are included, in azimuth-time order, into a single sub-swath image with black-fill demarcation in between. There is sufficient overlap between adjacent bursts and between sub-swaths to ensure continuous coverage of the ground as provided in GRD products. The images for all bursts in all sub-swaths are resampled to a common pixel spacing grid in range and azimuth while preserving the phase information.
EARTH SCIENCE>SPECTRAL/ENGINEERING>RADAR
EARTH SCIENCE>SPECTRAL/ENGINEERING>RADAR>RADAR BACKSCATTER
vito
terrascope
copernicus
esa
sentinel
orthoimagery
ground
c-sar
radar
radar backscatter

NASA JPL
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).
OPERA Radiometric Terrain Corrected SAR Backscatter from Sentinel-1 (Version 1)
EARTH SCIENCE>OCEANS>OCEAN OPTICS>BACKSCATTER
EARTH SCIENCE>LAND SURFACE
opera
jpl
nasa
c-band
synthetic aperture radar
radiometric terrain correction
rtc
backscatter
land surface
earth observation
c-sar
ASF

UC-LONDON/CPOM
Geoscientific Information
CLIMATE APPLICATIONS: Ice contributions to sea level rise
EARTH SCIENCE>CRYOSPHERE>GLACIERS/ICE SHEETS>ICE SHEETS
ENVISAT
SIRAL
ASAR
RA
Envisat
Ice Sheets
ECV
SAR-C

Copernicus Sentinel-1 Level-1 Ground Range Detected (GRD) products consist of focused SAR data that has been detected, multi-looked and projected to ground range using the WGS84 Earth ellipsoid model. This dataset includes acquisitions over the Brazilian territory from all primary imaging modes, namely Stripmap (SM), Interferometric Wide Swath (IW), and Extra Wide Swath (EW). The GRD products are provided at different resolution classes depending on the acquisition mode. For Stripmap (SM), products are available in full (FR), high (HR), and medium (MR) resolutions, with pixel spacing ranging from approximately 3.5m to 40m. The IW mode, the main acquisition mode over land, is primarily available in high resolution (HR), with a typical pixel spacing of 10x10m, and in medium resolution (MR), with 40x40m. The EW mode, commonly used for wide-area and ocean applications, is provided in high (25x25m) and medium (40x40m) resolutions.
Sentinel-1 - Level-1 - Interferometric Wide Swath Ground Range Detected High Resolution
sentinel
c-band
grd
radar
earth observation
brazil

Sentinel-1 Level-2 Ocean (OCN): WV
This collection offers Sentinel-1 Level-2 Ocean (OCN) products captured in Wave Mode (WV). Level-2 OCN products are specifically processed radar data. These products consist of geo-located geophysical parameters derived from Sentinel-1 Level-1 SAR data and are composed of three components: an Ocean Swell Spectra (OSW) component, an Ocean Wind Field (OWI) component, and a Radial Velocity (RVL) component. The OWI component is a ground-range gridded estimate of the surface wind speed and direction at 10 m above the surface. The OSW component is a two-dimensional ocean surface swell spectrum and includes an estimate of wind speed and direction for each swell spectrum. The OSW component provides continuous measurements of SAR swell spectra at C-band. The RVL surface radial velocity component is a ground-range gridded difference between the measured Level-2 Doppler grid and the geometrical Doppler calculated from Level-1 data. The RVL component provides continuity with the ASAR Doppler grid. OCN products are generated from all four Sentinel-1 imaging modes. In SM mode, the OCN product contains all three components. In IW and EW modes, the OCN product contains only OWI and RVL. In WV mode, the OCN product contains only OSW and RVL.
OCN
Ocean
WV
OSW
RVL