Dual polarisation products are represented by a single composite colour image in RGB with the red channel (R) representing the first polarisation, the green channel (G) represents the second polarisation and the blue channel (B) represents an average of the absolute values of the two polarisations. Single polarisation products are represented with a greyscale image. In the preview folder, quicklook data sets are power detected, averaged and decimated to produce a lower resolution version of the image. Level-2 products do not contain annotation data sets as all product metadata is contained within the netCDF product file. Annotated data sets are provided in XML format. Noise data annotations contain the estimated thermal noise look-up tables. Calibration annotations contain calibration information and the beta nought, sigma nought, gamma and digital number look-up tables that can be used for absolute product calibration. For each band of data there is a product annotation data set that contains metadata describing the main characteristics corresponding to that band such as the state of the platform during acquisition, image properties, polarisation, Doppler information, swath merging and geographic location. The manifest file is an XML file containing the mandatory product metadata common to all SENTINEL-1 products.Īnnotated data sets contain metadata describing the properties and characteristics of the measurement data or how they were generated. User Guides - Sentinel-1 SAR - SAR Formats - Sentinel Onlineįigure 1: Product Folder File Structure for Level-1 Products Access to Sentinel Data via the Copernicus Data Space Ecosystem.
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