Flood extent delineation using Sentinel-1 data as information source: systematic review of processing methods
نویسندگان
چکیده
Delineating the flood extent using SAR data has been an unexceptional activity since launch of first sensors. The methodologies applied to image classification vary in complexity and accuracy and, for Sentinel-1, technical procedures must be adapted considering their polarization, band, temporal resolution, other factors. Considering these aspects, this article aimed realize a systematic literature review discussing most frequent mapping employing Sentinel-1 data; describe preferred methods by areas expertise; inform about level. Results indicate that thresholding is common used delineation whatsoever researcher area work. Excellent levels (reaching 99%) can obtained as major method, with refinement provided additional correct limitations misclassification. Sentinel-1data good source information flooded but its small areas. choice methodology processing subjective requires specific knowledge remote sensing field from who executes hydrological study.Keywords: Flood mapping, thresholding, synthetic aperture radar, sensing. Delineamento de extensão inundação usando dados como fonte informação: revisão sistemática dos métodos processamento RESUMODelinear da tem sido uma atividade comum desde o lançamento primeiros sensores. As metodologias aplicadas à classificação imagens variam em complexidade e precisão e, para satélite os procedimentos técnicos devem ser adaptados considerando sua polarização, banda, resolução temporal, entre outros fatores. Considerando esses aspectos, este artigo teve objetivo realizar literatura discutindo frequentemente do mapeamento inundações empregando Sentinel-1; descrever preferidos por áreas especialização analista; informar sobre seu nível precisão. Os resultados indicam que limiarização é metodologia mais utilizada delineamento inundação, seja qual área trabalho pesquisador. Excelentes níveis (cerca podem obtidos método principal, com refinamento fornecido adicionais corrigir limitações erros classificação. são boa informação inundadas, mas têm suas pequenas. A escolha revela-se subjetiva, inerente ao campo estudo pesquisador, requer conhecimento específico na sensoriamento remoto quem executa um hidrológico.Palavras-chave: Mapeamento limiarização, radar abertura sintética, remoto.
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ژورنال
عنوان ژورنال: Revista Brasileira de Geografia Física
سال: 2022
ISSN: ['1984-2295']
DOI: https://doi.org/10.26848/rbgf.v15.6.p3047-3076