GMT5SAR InSAR - Stripmap


GMT5SAR InSAR - Stripmap

GMT5SAR is an open source (GNU General Public License) InSAR processing system. This service provides standard 2-pass processing of a master product against one or more slave products.

EO sources supported:

  • ERS-1/2 SAR
  • Envisat ASAR Image Mode Level 1 (ASA_IMS_1P)

Output specifications

  • amplitude of interferogram ( )
  • phase of interferogram (
  • correlation of interferogram (

This tutorial covers the typical InSAR processing to form an interferogram using two SAR images and a digital elevation model.

The GMT5SAR processing service can also process several pairs master/slave (same master).

Select the processing

  • Login to the platform (see user section)
  • Select the processing service “GMT5SAR InSAR - Stripmap”:

The “GMT5SAR InSAR - Stripmap” panel is displayed with parameters values to be filled-in.


Parameters comes with default pre-filled values which are the same as the ones used in this tutorial, so you may skip the following section and directly use the pre-filled parameters.

Fill the parameters


slave and master can be picked up by using the following data package (alternatively to the search steps described): BajaCaliforniaEQ

Slave product reference

  • Select EO Data / Envisat as data collection.
  • Type ASA_IM__0P in the Search Terms field (1):
  • Click on Show Other Parameters and apply the date value 2010-05-02 in both:
  • time:start field
  • time:end field

then click on the button Search:

  • Drag and Drop the first result in the Slave product reference field:

Master product reference

  • Perform the same procedure described previously (Slave product reference), using the value 2010-03-28 in both the time:start field and the time:end field:
  • Drag and drop the first result in the Master product reference field:
  • Select the Snaphu threshold

Run the job

  • Click on the button Run Job and see the Running Job
  • After about 25 minutes, see the Successful Job:
  • Click on the button Show results on map, then on the phase_mask_ll.tiff result on the Results Table in the bottom left side
  • See the result on map: