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Computation

 
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Level 1 processing algorithm applied to Sentinel 1 raw data, Instrument Processing Facility (IPF) v3

Status: Not defined
Publication State:

Abstract

This computation involves the Level 1 processing algorithm applied to raw Synthetic Aperture Radar (SAR) data. This consists of Level 1 preprocessing, special handling for TOPSAR mode, Doppler centroid estimation, Level 1 Single Look Complex (SLC) processing algorithms and Level 1 post-processing to generate the output Single Look Complex (SLC) and Ground Range Detected (GRD) products as well as quicklook images.

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 products have been geo-referenced using the orbit and attitude data from the satellite and have been corrected for azimuth bi-static delay, elevation antenna pattern and range spreading loss.

For more information on the changes for this processing version please see the Sentinel 1 document libary under the docs tab.

Abbreviation: Not defined
Keywords: Synthetic Aperture Radar, Sentinel 1, Level 1, algorithm, SAR

keywords:      Synthetic Aperture Radar, Sentinel 1, Level 1, algorithm, SAR
inputDescription:      None
outputDescription:      None
softwareReference:      None
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