# SARCalibration

## Brief Description

Perform radiometric calibration of SAR images. Following sensors are supported: TerraSAR-X, Sentinel1 and Radarsat-2.Both Single Look Complex(SLC) and detected products are supported as input.

## Tags

Calibration,SAR

## Long Description

The objective of SAR calibration is to provide imagery in which the pixel values can be directly related to the radar backscatter of the scene. This application allows computing Sigma Naught (Radiometric Calibration) for TerraSAR-X, Sentinel1 L1 and Radarsat-2 sensors. Metadata are automatically retrieved from image products.The application supports complex and non-complex images (SLC or detected products).

## Parameters

- [param] -in <string> Input complex image. Mandatory: True. Default Value: ""
- [param] -out <string> Output calibrated image. This image contains the backscatter (sigmaNought) of the input image.. Mandatory: True. Default Value: ""
- [param] -ram <int32> Available memory for processing (in MB). Mandatory: False. Default Value: "128"
- [param] -noise <boolean> Flag to disable noise. For 5.2.0 release, the noise values are only read by TerraSARX product.. Mandatory: False. Default Value: "True"
- [param] -inxml <string> Load otb application from xml file. Mandatory: False. Default Value: ""
- [param] -outxml <string> Save otb application to xml file. Mandatory: False. Default Value: ""
[choice] -lut Lookup table values are not available with all SAR products. Products that provide lookup table with metadata are: Sentinel1, Radarsat2. sigma,gamma,beta,dn. Mandatory: True. Default Value: "sigma"

- [group] -sigma

- [group] -gamma

- [group] -beta

- [group] -dn

## Limitations

None

## Authors

OTB-Team

## See Also

## Example of use

- in: RSAT_imagery_HH.tif

- out: SarRadiometricCalibration.tif