SARDEMGrid¶
Computes deformation DEM grid.
Description¶
This application creates a deformation grid related to the DEM with projections into Master and Slave SAR geometries. The output grid is a VectorImage composed of three values : shift in range, shift in azimut and a number of DEM points for contribution. The inputs of this application are SAR images. This application can directly take the projected DEM as inputs.
Parameters¶
Input SAR Master image -insarmaster image Mandatory
Master SAR Image.
Input SAR Slave image -insarslave image Mandatory
Slave SAR Image.
Input DEM -indem image Mandatory
Input DEM.
Input vector of DEM projected into SAR Master geometry -indemprojmaster image
Input vector of DEM projected into SAR Master geometry.
Input vector of DEM projected into SAR Slave geometry -indemprojslave image
Input vector of DEM projected into SAR Slave geometry.
Output DEM grid (Vector Image) -out image [dtype] Mandatory
Output DEM Grid Vector Image (Shift_ran, Shift_azi, NbDEMPts for contribution).
MultiLook factor on distance -mlran int Default value: 3
MultiLook factor on distance.
MultiLook factor on azimut -mlazi int Default value: 3
MultiLook factor on azimut.
Grid step for range dimension (into SLC/SAR geometry) -gridsteprange int Default value: 150
Grid step for range dimension (into SLC/SAR geometry).
Grid step for azimut dimension (into SLC/SAR geometry) -gridstepazimut int Default value: 150
Grid step for azimut dimension (into SLC/SAR geometry).
Available RAM (MB) -ram int Default value: 256
Available memory for processing (in MB).
Examples¶
From the command-line:
otbcli_SARDEMGrid -indem ./S21E055.hgt -insarmaster s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_ML.tiff -insarslave s1b-s4-slc-vv-20160929t014610-20160929t014634-002277-003d71-002_ML.tiff -out demGrid.tif
From Python:
import otbApplication
app = otbApplication.Registry.CreateApplication("SARDEMGrid")
app.SetParameterString("indem", "./S21E055.hgt")
app.SetParameterString("insarmaster", "s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_ML.tiff")
app.SetParameterString("insarslave", "s1b-s4-slc-vv-20160929t014610-20160929t014634-002277-003d71-002_ML.tiff")
app.SetParameterString("out", "demGrid.tif")
app.ExecuteAndWriteOutput()
Limitations¶
Only Sentinel 1 products are supported for now.