SARDEMProjection

Projects a DEM into SAR geometry.

Description

This application puts a DEM file into SAR geometry and estimates two additional coordinates. In all for each point of the DEM input four components are calculated : C (colunm into SAR image), L (line into SAR image), Z and Y.

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 perform projection on.

Input SAR image -insar image Mandatory
SAR Image to extract SAR geometry.

Input file to get precise metadata -infilemetadata filename [dtype]
Input file to get precise metadata.

Set H components into projection -withh bool Default value: false
If true, then H components into projection.

Set XYZ Cartesian components into projection -withxyz bool Default value: false
If true, then XYZ Cartesian components into projection.

Set SatPos components into projection -withsatpos bool Default value: false
If true, then SatPos components into projection.

No Data values for the DEM -nodata int Default value: -32768
No Data values for the DEM.

Output Vector Image -out image [dtype] Mandatory
Output Vector Image (C,L,Z,Y).

gain value (output of this application) -gain float Default value: 0
Gain value.

direction in range into DEM geometry to across SAR geometry from Near range to Far range (output of this applicxation) -directiontoscandemc int Default value: 1
Range direction for DEM scan.

direction in range into DEM geometry to across SAR geometry from Near range to Far range (output of this application) -directiontoscandeml int Default value: 1
Azimut direction for DEM scan.

Available RAM (MB) -ram int Default value: 256
Available memory for processing (in MB).

Examples

From the command-line:

otbcli_SARDEMProjection -indem S21E055.hgt -insar s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_SLC.tiff -out S21E55_proj.tif

From Python:

import otbApplication

app = otbApplication.Registry.CreateApplication("SARDEMProjection")

app.SetParameterString("indem", "S21E055.hgt")
app.SetParameterString("insar", "s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_SLC.tiff")
app.SetParameterString("out", "S21E55_proj.tif")

app.ExecuteAndWriteOutput()

Limitations

Only Sentinel 1 (IW and StripMap mode) and Cosmo products are supported for now.