Water information extraction based on GF-3 fully polarimetric SAR index features

doi:10.13474/j.cnki.11-2246.2025.0113

Abstract

Abstract: When extracting water information from single-polarization radar images, the ability to distinguish ground objects with similar scattering characteristics to water bodies is not high. Based on the image data of full-polarization GF-3 satellite, scattering characteristics of different polarization modes are analyzed and water index characteristics of different polarization modes are constructed to obtain the feature image data constructed by combining index features. The feature image combined with object-oriented method is used to extract water information quickly and accurately. Full polarization Gaofen-3 is selected as the experimental data, and the experimental results show that the water index feature image data constructed with different polarization data has better water extraction effect and higher precision.

Key words: fully polarimetric SAR, SDWI, feature image, GF-3

CLC Number:

P237

SONG Wei, SHI Mengchen, YANG Yang. Water information extraction based on GF-3 fully polarimetric SAR index features[J]. Bulletin of Surveying and Mapping, 2025, 0(1): 78-82.

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