Sentinel-1 Single Look Complex: IW, EW, SM

This collection offers Sentinel-1 Level-1 Single Look Complex (SLC) products captured in Wave Mode (WV). 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.

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.

This collection offers Sentinel-1 Level-1 Single Look Complex (SLC) bursts

The Level-1C product is composed of 110x110 km2 tiles (ortho-images in UTM/WGS84 projection). Earth is subdivided on a predefined set of tiles, defined in UTM/WGS84 projection and using a 100 km step. However, each tile has a surface of 110x110 km² in order to provide large overlap with the neighbouring. The Level-1C product results from using a Digital Elevation Model (DEM) to project the image in cartographic geometry. Per-pixel radiometric measurements are provided in Top Of Atmosphere (TOA) reflectances along with the parameters to transform them into radiances.

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-1 monthly mosaics are generated from monthly stacks of Sentinel-1 GRD data by calculating the weighted sum of the terrain corrected backscatter observations. Two different Sentinel-1 mosaics are being produced for each month: IW mosaic and DH mosaic.