Georeferencing from GeoTIFF is supported in the form of one tiepoint and pixel size, a transformation matrix, or a list of GCPs[1].
Result after Thermal Noise Removal of Sentinel-1 imagery contain georeferencing information composed of one tiepoint and pixel size. Add georeference information refer to reference [2].
The georeference information like this :
Georeference information adding method is in 2.2.3 Adding georeferencing.
[1] https://www.gdal.org/frmt_gtiff.html
[2] https://download.osgeo.org/gdal/workshop/foss4ge2015/workshop_gdal.pdf