Sentinel-1 HV-pol noise rebuilding

Microwave Toolbox
#1

Due to noise in HV-pol images, it’s interferential for processing and physical parameters extracting.

I want to know whether is there a formula to achieve noise rebuilding? THX.

#2

I‘ve found the formula in Level-1 Radiometric Calibration of ESA website(https://sentinel.esa.int/web/sentinel/radiometric-calibration-of-level-1-products). THX.

#3

Use calibrate + thermal noise removal.