航天器工程2018，Vol.27Issue(2)：129-134,6.DOI:10.3969/j.issn.1673-8748.2018.02.020
高分四号卫星在洪泽湖汛期水体范围变化监测中的应用
Application of GF-4 Satellite in Changes Monitoring for Water Body Extent of Hongze Lake in Flood Season
摘要
Abstract
Hongze Lake is the boundary between the middle and lower reaches of the Huaihe Riv-er,and it is important to monitor the changes of Hongze Lake water body extent in flood season. In this paper,the GF-4 satellite data with high time resolution is applied to monitor the changes of Hongze Lake water body extent during a completed process of flood season.The water body extent is automatically extracted based on water index model,and the change detection algorithm based on correlation analysis is used to quickly extract water body extent change.The results in-dicate that in the same flood season,the area of the water body is inversely proportional to the perimeter in various months of flood season,the area change of water body is significant,and the increase and decrease exist at the same period.The monitoring results can provide obj ective data for regional disaster risk assessment and loss assessment.关键词
高分四号卫星/洪泽湖/水体范围/变化检测Key words
GF-4 satellite/Hongze Lake/water body extent/change detection分类
信息技术与安全科学引用本文复制引用
张磊..高分四号卫星在洪泽湖汛期水体范围变化监测中的应用[J].航天器工程,2018,27(2):129-134,6.基金项目
国家自然科学基金"年度洪涝灾害风险评估方法及综合防范模式研究"(41771541) （41771541）
