SAR Deburst

Brief Description

This application performs deburst of Sentinel1 IW SLC images by removing redundant lines.

Tags

SAR, Calibration

Long Description

Sentinel1 IW SLC products are composed of several burst overlapping in azimuth time for each subswath, separated by black lines [1]. The deburst operation consist in generating a continuous image in terms of azimuth time, by removing black separation lines as well as redundant lines between bursts.

Note that the output sensor model is updated accordingly. This deburst operation is the perfect preprocessing step to orthorectify S1 IW SLC product with OTB [2] without suffering from artifacts caused by bursts separation.

Parameters

• Input Sentinel1 IW SLC Image (in): Raw Sentinel1 IW SLC image, or any extract of such made by OTB (geom file needed)

• Output Image (out): Deburst image, with updated geom file that can be further used by Orthorectification application. If the input image is a raw Sentinel1 product, uint16 output type should be used (encoding of S1 product). Otherwise, output type should match type of input image.

• Available RAM (Mb) (ram): Available memory for processing (in MB)

• Load otb application from xml file (inxml): Load otb application from xml file

• Save otb application to xml file (outxml): Save otb application to xml file

Limitations

Only Sentinel1 IW SLC products are supported for now. Processing of other Sentinel1 modes or TerrasarX images will result in no changes in the image and metadata. Images from other sensors will lead to an error.

Authors

OTB-Team

See also

[1] Sentinel1 User Handbook, p. 52: https://sentinel.esa.int/documents/247904/685163/Sentinel-1_User_Handbook
[2] OrthoRectification application

Example of use

• Values for GUIs:

• in: s1_iw_slc.tif

• out: s1_iw_slc_deburst.tif

• Command line to execute:

otbcli_SARDeburst -in s1_iw_slc.tif -out s1_iw_slc_deburst.tif