ENH : Add Doc for the new applications : SARAddBandInterferogram, SARAltAmbig, SARCompensatedComplex and SARPhaseFiltering

Applications/app_SARAddBandInterferogram.md

+# SARAddBandInterferogram
+
+Replace an amplitude for input interferogram.
+
+## Description
+
+Replace an amplitude for input interferogram and merge it to rebuild three bands (amp, pha and coh).
+
+## Parameters
+
+**Input Interferogram with correct amplitude** `-ininterfamp image` <br />
+Input Interferogram with correct amplitude.
+
+**Input Compensated complex image** `-incomplexamp image` <br />
+Input Compensated complex image.
+
+**Input Interferogram** `-ininterf image` *Mandatory* <br />
+Input Interferogram.
+
+**Averaging on distance for output interferogram** `-mlran int` *Default value: 1* <br />
+Averaging on distance for output interferogram.
+
+**Averaging on azimut for output interferogram** `-mlazi int` *Default value: 1* <br />
+Averaging on azimut for output interferogram.
+
+**Gain to apply on output amplitude** `-gain float` *Default value: 0.1* <br />
+Gain to apply on output amplitude
+
+**Output interferogram (after filtering)** `-out image [dtype]` *Mandatory* <br />
+Output Image : Interferogram after filtering with 3 corrected bands (amp, pha, coh).
+
+**Available RAM (MB)** `-ram int` *Default value: 256* <br />
+Available memory for processing (in MB).
+
+## Examples
+
+From the command-line:
+
+```
+otbcli_SARAddBandInterferogram -ininterfamp interferogram_amp.tiff -ininterf interferogram_phacoh.tiff -out outInterferogram.tiff
+```
+
+From Python:
+
+```
+import otbApplication
+
+app = otbApplication.Registry.CreateApplication("SARAddBandInterferogram")
+
+app.SetParameterString("ininterfamp", "interferogram_amp.tiff")
+app.SetParameterString("ininterf", "interferogram_phacoh.tiff")
+app.SetParameterString("out", "outInterferogram.tiff")
+
+app.ExecuteAndWriteOutput()
+```
+
+## Limitations
+
+Only Sentinel 1 (IW and StripMap mode) and Cosmo products are supported for now.