PRISI: A novel piecewise radar impervious surface index for urban monitoring using Sentinel-1 data

Yulin Ding, Qing Ding, Jie Yang, Zhenfeng Shao, Xiao Huang

Abstract: Highlights•We propose a novel piecewise radar impervious surface index (PRISI).•High backscatter and strong coherence of impervious surfaces are considered jointly.•We design an adaptive impervious surface extraction strategy using finite mixture models.•The proposed PRISI owns robust regional universality and seasonal suitability.