A Comprehensive Multi-feature and Superpixel SAR Wetland Flooding Frequency Calculation Method
The changes in wetland water bodies affect the development of wetland ecological functions,and studying the frequency of wetland flooding is helpful for wetland monitoring and management.To investigate the application of multi polarization features of Synthetic Aperture Radar(SAR)in wetland flooding frequency.This article proposes a SAR wetland flooding fre-quency calculation method based on Sentinel-1 radar data,which integrates multi polarization features and superpixel optimization.This method combines optimized radar water index,uses statistical voting,integrates multi polarization features and superpixel spatial contextual information,and can accurately identify water bodies,thereby calculating the annual wetland flooding frequency.This article uses the Google Earth Engine(GEE)platform to conduct experi-ments on Sentinel-1 SAR data from Dongting Lake in 2020.The accuracy of the water body proposed by this method is 93.96%,and the calculated frequency distribution of flooding is consistent with the terrain characteristics of Dongtinghu lake.
Synthetic Aperture Radarmulti-polarization characteristicsuperpixelflood-ing frequency
万方数据
维普
