So I got in an error message “java.lang.nullpointerexception” while I am pre-processing (Thermal noise removal) my data. I have a time series and the error starts fromt eh one that was from 2018.03.14, before this time, the pre-processing went very well. I saw one of the users suggested that it might mean that the data after March 12th 2018 does not need this pre-processing step. Is that true? Does it mean that these newer images/files do not need any Thermal Noise Removal pre-processing at all and I have to skip this process for the images after mid-march 2018?
Thanks for your reply in advance
No, it means that after mid March we are using new IPF to generate S-1 products. These new data contain both “Range noise vector list” and “Azimuth noise vector list” as expleined in https://sentinel.esa.int/documents/247904/2142675/Thermal-Denoising-of-Products-Generated-by-Sentinel-1-IPF
The IPF changes were implemented in SNAP.
If you keep receiving errors please check if you have all the new updates of SNAP installed (you shall have v 6.0.2 of SNAP implementation)
Conclusion: you still need to apply Thermal Noise removal as before but with new (updated) version of SNAP