I’m developing snap operator.
my operator 's formula is similar original operator(same s-1 thermal noise removal)
I just want to add some parameter in s-1 thermal noise removal.
but how can I use s1tbx library and add code in there??
You should follow our Developer Guide
If you want to modify the existing code the SNAP development section will be of interest for you.
If you want to create a new operator based on the thermal noise removal you can have a look at How to integrate a new processor
But I think the operator is not intended to be extended by external code. If you have suggestions for an extension you can get in contact with the developer @junlu. You can provide a pull request or a patch an then it might be included in one of the next releases.
thank you!!