I received some Sentinel-1 tiff images that were downloaded via the WCS service, so they're just the tiff files, not the full SAFE-format products. They're for the IW GRD product, and my understanding from the documentation of that product is that to use the data, you're first supposed to radiometrically calibrate the digital numbers from the tiff files, to get eg backscattering coefficient sigma-naught. The documentation says that the calibration vectors for doing this conversion are in the Annotation section of the product. Is there a way to get that information from Sentinel Hub, or maybe to specify when doing the download that we want it to apply the calibration before giving us the file?
If you want to get sigma-naught, you can use backscatter coefficient parameter (see https://docs.sentinel-hub.com/api/latest/#/API/data/Sentinel-1-GRD) or configure the Sentinel Hub layer accordingly: