Wetland mapping

Hello Friends am trying to map wetland using Sentinel 1 image but am not familiar. please anyone help?

have you considered a supervised classification?

yeah…using both Landsat and sentinel 2 using pixel and index based classification method. but my intention is to use microwave image in order to map both wetland and flooding

In the second link I make suggestions on how to compensate the lack of spectral variety and how to increase your feature space for SAR classification.