SARDEMToAmplitude¶
Simu_SAR step for Diapason chain.
Description¶
This application executes the Simu_SAR step with three internal applications : SARDEMProjection, SARAmplitudeEstimation and SARMultiLook.
This application has several output images and supports “multi-writing”. Instead of computing and writing each image independently, the streamed image blocks are written in a synchronous way for each output. The output images will be computed strip by strip, using the available RAM to compute the strip size, and a user defined streaming mode can be specified using the streaming extended filenames (type, mode and value). Note that multi-writing can be disabled using the multi-write extended filename option: &multiwrite=false, in this case the output images will be written one by one. Note that multi-writing is not supported for MPI writers.
Parameters¶
Input DEM -indem image Mandatory
DEM to extract DEM geometry.
Input SAR image -insar image Mandatory
SAR Image to extract SAR geometry.
Output simulated amplitude Image (this output image is multilooked) -out image [dtype] Mandatory
Output simulated amplitude Image (this output image is multilooked).
Available RAM (MB) -ram int Default value: 256
Available memory for processing (in MB).
No Data values for the DEM -nodata int Default value: -32768
No Data values for the DEM.
Averaging on distance -mlran int Default value: 3
Averaging on distance
Averaging on azimut -mlazi int Default value: 3
Averaging on azimut
Gain to apply on ML image -mlgain float Default value: 1
Gain to apply on ML image
Examples¶
From the command-line:
otbcli_SARDEMToAmplitude -indem S21E055.hgt -insar s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_SLC.tiff -out s1a-s4-simu-amplitude.tiff
From Python:
import otbApplication
app = otbApplication.Registry.CreateApplication("SARDEMToAmplitude")
app.SetParameterString("indem", "S21E055.hgt")
app.SetParameterString("insar", "s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_SLC.tiff")
app.SetParameterString("out", "s1a-s4-simu-amplitude.tiff")
app.ExecuteAndWriteOutput()
Limitations¶
Only Sentinel 1 (IW and StripMap mode) and Cosmo products are supported for now.