Issue in SNAP 13.0.0 when trying to coregister using Graph

Microwave Toolbox
1

Hello,

I think that there is actually an issue when trying to coregister data using the Graph function. Either by creating my own “coregistration” graph or by using the one in .snap/graphs/Radar/Standard Graphs/Coregiser.xml.

I obtained the attached error: Error: [NodeId: Cross-Correlation] Cannot parse null string.

Coregistration_issue
Coregistration_issue1192×915 150 KB

It looks like when the graph updates with the data, it removes the default values of

      <fineRegistrationWindowAccAzimuth/>
      <fineRegistrationWindowAccRange/>
      <fineRegistrationOversampling/>

As you can see in the XML saved from the graph interface below, they are empty:

Coregister_ALOS_saved.xml (3.6 KB)

By changing these values to 16, I have been able to run the graph with gpt. The graph works well even though it did not create any logs.

Best regards,

Nathan

2

Have you installed the latest updates?

3

Yes, I am up-to-date.

4

FYI, I do not think it is the reason of the issue but I found another small issue:
In microwave-toolbox-master\sar-op-insar-ui\src\main\java\eu\esa\sar\insar\gpf\ui\coregistration\CrossCorrelationOpUI.java, lines 57 and 58 the value 32 is missing.
(same in s1tbx)

5

Change the “boolean” at line 107 and 109 in CrossCorrelationOp to “Boolean” and see if it helps.

6

Jira ticket SNAP-4150 created.

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