Flood inundation range dynamic simulation method integrated with active and passive microwave remote sensing information

Abstract

A flood inundation range dynamic simulation method integrated with active and passive microwave remote sensing information comprises the steps of extracting a time sequence of M / C signals by satellite-borne passive microwave brightness temperature data, and preliminarily determining the occurrence time of a flood event; searching a satellite-borne active microwave remote sensing SAR image corresponding to the flood event based on the occurrence time of the flood event, and performing water body / land classification based on a machine learning method; based on the SAR image water body / land classification result, the surface water area ratio FWS of M pixels is extracted, making correlation analysis on the surface water area ratio FWS and corresponding M / C signals, and creating a relation model of M / C and FWS; utilizing the M / C signal to deduce the space-time distribution of the FWS at a permanent water body pixel, and realizing the dynamic simulation of the flood inundation range at the permanent water body. Based on real-time or quasi-real-time satellite microwave remote sensing observation information, the flood dynamic inundation range can be solved, flood simulation is practicallyguided, and important data support and decision basis are provided for flood emergency rescue and prevention.

Description

technical field [0001] The invention relates to the technical field of flood dynamic simulation, in particular to a method for dynamic simulation of flood submersion range by integrating active and passive microwave remote sensing information. Background technique [0002] Flood disaster prevention and control is an important field of national scientific research and development. The correct prevention and control of flood disasters is a major demand for national development and an important guarantee for the sustainable development of social economy and ecological environment. The dynamic simulation of flood submersion range can provide direct guidance for flood disaster prevention and control, and has great scientific research significance and practical application value. [0003] The dynamic simulation of flood submersion range has always been an important field of interdisciplinary research in hydrology, remote sensing, and disasters. Generally, in order to effectively...

AI Technical Summary

Problems solved by technology

The inherent properties of remote sensing observations determine that using any one of them alone is difficult to meet the high temporal and spatial accuracy requirements of flood simulation, which is a bottleneck problem in existing scientific research and technical applications

The inventors of the present application found through research in China during the process of realizing the present invention that the fusion of active and passive microwave remote sensing information for dynamic simulation of flood range can be used as a breakthrough point to solve this bottleneck problem, and related technologies have not yet been reported in the literature

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