Applications/app_SARFineMetadata.md

+# SARFineMetadata
+
+SAR metadata correction.
+
+## Description
+
+This application corrects two metadata : the time of the first line and the slant near range.
+
+## Parameters
+
+**Input correlation grid** `-ingrid image` *Mandatory* <br />
+Correlation grid with shifts for the two dimensions and associated correlation rate between two images (for instance : ML Master and simulated amplitude image).
+
+**Input SAR image** `-insar image` *Mandatory* <br />
+SAR Image to extract initial metadata.
+
+**Output file to store new metadata values** `-outfile filename [dtype]` <br />
+Output file to store new metadata values.
+
+**Max step for histogram** `-stepmax float` *Default value: 0.1* <br />
+Max step for histogram.
+
+**Threshold on correlation rate** `-threshold float` *Default value: 0.3* <br />
+Threshold on correlation rate.
+
+**Time of the first line (output of this application)** `-timefirstline string` *Mandatory* <br />
+Time of the first line (output of this application).
+
+**Slant near range (output of this application)** `-slantrange float` *Mandatory* <br />
+Slant near range (output of this application).
+
+**Output image with precise metadata** `-out image [dtype]` *Mandatory* <br />
+Output image with precise metadata.
+
+**Available RAM (MB)** `-ram int` *Default value: 256* <br />
+Available memory for processing (in MB).
+
+## Examples
+
+From the command-line:
+
+```
+otbcli_SARFineMetadata -ingrid corGrid.tiff -outfile fine_metadata.txt
+```
+
+From Python:
+
+```
+import otbApplication
+
+app = otbApplication.Registry.CreateApplication("SARFineMetadata")
+
+app.SetParameterString("ingrid", "corGrid.tiff")
+app.SetParameterString("outfile", "fine_metadata.txt")
+
+app.ExecuteAndWriteOutput()
+```
+
+## Limitations
+
+Only Sentinel 1 products are supported for now.