期刊
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
卷 19, 期 -, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LGRS.2022.3214496
关键词
Coastline extraction; constant false alarm rate (CFAR); Doppler parameters; polarization; synthetic aperture radar (SAR)
类别
资金
- Marie Sklodowska-Curie Actions Innovative Training Networks (MSCA-ITNs) through the Multimodal Environmental Exploration Systems-Novel Technologies (MENELAOS-NT) [GA 860370]
This letter proposes a novel method for coastline extraction using synthetic aperture radar data, which relies on the Doppler parameter to delineate coastlines in the absence of in-situ data and cloud-free optical images. Results indicate that utilizing scattering from dual and cross-polarization for coastline extraction is more reliable than using co-polarization.
Coastline extraction by exploiting optical images is challenging during adverse weather conditions. This letter proposes coastline extraction from synthetic aperture radar (SAR) data. Since collecting in-situ data is expensive and not always possible, the Doppler parameter is used to delineate coastlines when neither in-situ data nor cloud-free optical images are available. We propose a novel coastline extraction method based on classic coastal dynamic variation, such as Doppler centroid (f(DC)), since the coastline is static and has zero Doppler with respect to the dynamic sea-state. The results of the Doppler-based novel technique allow us to investigate the impact of natural hazards on coastline degradation. We compare the proposed method to state-of-the-art (SOA) coastline extraction methods based on polarimetric correlations and the reference method from Sentinel-2. The results show that using scattering from dual and cross-polarization for coastline extraction is more reliable than using co-polarization. Based on empirical distributions and using the constant false alarm rate (CFAR) method, the relevant threshold has been adapted to distinguish land and sea in an unsupervised manner. We compare the results of polarimetric and Sentinel-2 with Doppler-based coastline extraction, which emphasizes the accuracy of the proposed f(DC) method for extracting coastlines at full resolution.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据