I think the following website( Sentinel-1 Product Specification) merely introduces Sentinel-1 tiff file without the difference between calibration file and noise file.
https://sentinel.esa.int/documents/247904/349449/Sentinel-1_Product_Specification
The following website introduces thermal denoising of Products Generated by the S-1 IPF. Introducing how to remove noise using snappy.
https://sentinel.esa.int/documents/247904/2142675/Thermal-Denoising-of-Products-Generated-by-Sentinel-1-IPF
I just adopted a method that maybe wrong way , I don’t using the last line of calibration xml because I found the last second line number is same as Sentinel-1 image rows. For my given xml information , Sentinel-1 image is 8992 rows.
