Applications/app_SARCorrelationGrid.md

+# SARCorrelationGrid
+
+Computes SAR correlation shift (into temporal domain).
+
+## Description
+
+This application computes correlation shifts between two images : shift in range and shift in azimut. The inputs of this application are MultiLooked images (real images).
+
+## Parameters
+
+**Input Master image (real image)** `-inmaster image` *Mandatory* <br />
+Master Image (real image).
+
+**Input Slave image (real image)** `-inslave image` *Mandatory* <br />
+Slave Image (real image).
+
+**MultiLook factor on distance** `-mlran int` *Default value: 3* <br />
+MultiLook factor on distance.
+
+**MultiLook factor on azimut** `-mlazi int` *Default value: 3* <br />
+MultiLook factor on azimut.
+
+**Grid step for range dimension (into SLC/SAR geometry)** `-gridsteprange int` *Default value: 150* <br />
+Grid step for range dimension (into SLC/SAR geometry).
+
+**Grid step for azimut dimension (into SLC/SAR geometry)** `-gridstepazimut int` *Default value: 150* <br />
+Grid step for azimut dimension (into SLC/SAR geometry).
+
+**Set 0 to offset of first Line and Colunm of output grid** `-nooffset int` *Default value: 0* <br />
+If 1, then no offset for the first L/C if output grid.
+
+**Output Correlation grid (Vector Image)** `-out image [dtype]` *Mandatory* <br />
+Output Correlation Grid Vector Image (Shift_ran, Shift_azi, Correlation_rate).
+
+**Available RAM (MB)** `-ram int` *Default value: 256* <br />
+Available memory for processing (in MB).
+
+## Examples
+
+From the command-line:
+
+```
+otbcli_SARCorrelationGrid -inmaster s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_ML.tiff -inslave s1b-s4-slc-vv-20160929t014610-20160929t014634-002277-003d71-002_ML.tiff -out out_CorrelationGrid.tiff
+```
+
+From Python:
+
+```
+import otbApplication
+
+app = otbApplication.Registry.CreateApplication("SARCorrelationGrid")
+
+app.SetParameterString("inmaster", "s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_ML.tiff")
+app.SetParameterString("inslave", "s1b-s4-slc-vv-20160929t014610-20160929t014634-002277-003d71-002_ML.tiff")
+app.SetParameterString("out", "out_CorrelationGrid.tiff")
+
+app.ExecuteAndWriteOutput()
+```
+
+## Limitations
+
+Only Sentinel 1 products and Cosmo are supported for now.