The determination method of flood inundation range based on the coherence of Sentinel data

doi:10.13474/j.cnki.11-2246.2022.0332

Abstract

Abstract: Flood disaster can cause farmland inundation, residential damage and other hazards. When the optical sensor extracts the flooded area, it can't penetrate the clouds, so it can't get effective ground information. SAR uses microwave band, which is not affected by weather conditions and can be imaged at night. Therefore, SAR has become a powerful tool for flood disaster assessment. This paper uses Sentinel-1A data of three SAR radar images on September 23, October 5 and October 17, 2021 to calculate the coherence coefficient. The threshold value is set to 0.2 to extract the water inundation range, and the expansion range and change trend are analyzed. According to the generated deformation map, the change of water level rise is analyzed. It is confirmed that the coherence coefficient threshold extraction method based on radar data is feasible in monitoring the flood inundation range. It is verified that InSAR technology can accurately extract water boundary and analyze water level rising trend.

Key words: SAR radar image data, coherence coefficient, threshold selection, submerged range, water level change

CLC Number:

P237

WU Yanru, LIAN Xugang, GAO Yurong. The determination method of flood inundation range based on the coherence of Sentinel data[J]. Bulletin of Surveying and Mapping, 2022, 0(11): 96-100.

References

[1] 马定国, 刘影, 陈洁, 等. 鄱阳湖区洪灾风险与农户脆弱性分析[J]. 地理学报, 2007, 62(3):321-332.
[2] 毛德华, 何梓霖, 贺新光, 等. 洪灾风险分析的国内外研究现状与展望(Ⅰ):洪水为害风险分析研究现状[J]. 自然灾害学报, 2009, 18(1):139-149.
[3] 李戈伟. 基于遥感和GIS的洪灾监测与评估方法研究[D]. 北京:中国科学院研究生院(遥感应用研究所), 2002.
[4] 郁淑华. 西南地区洪涝灾害的监测与预报[M]. 北京:气象出版社, 2004.
[5] 陈桂亚, 袁雅鸣, 郭进修, 等. 山洪灾害防治水文气象站网布设研究[J]. 中国水利, 2007(14):42-43.
[6] 覃志豪, 李文娟. 基于高分卫星遥感影像农业洪涝灾害范围监测系统及方法:中国,CN111008941A[P]. 2020-04-14.
[7] 王志豪, 李刚, 蒋骁. 基于光学和SAR遥感图像融合的洪灾区域检测方法[J]. 雷达学报, 2020, 9(3):539-553.
[8] 罗玉彬, 马浩录, 吕莉. HJ-1A/B在2012年黄河上中游洪水监测中的应用[J]. 测绘通报, 2013(6):54-58.
[9] 窦建方, 陈鹰, 翁玉坤. 基于序列非线性滤波SAR影像水体自动提取[J]. 测绘通报, 2008(9):37-39, 45.
[10] 周红妹, 陆贤, 段项锁. 基于遥感和GIS的华东区域洪涝灾害动态监测系统的研究和建立[J]. 自然灾害学报, 2001, 10(2):84-88.
[11] 韦嫦, 付波霖, 覃娇玲, 等. 基于多时相Sentinel-1A的沼泽湿地水面时空动态变化监测[J]. 自然资源遥感, 2022, 34(2):251-260.
[12] 王嘉芃, 刘婷, 俞志强, 等. 基于COSMO-SkyMed和SPOT-5的城镇洪水淹没信息快速提取研究[J]. 遥感技术与应用, 2016, 31(3):564-571.
[13] 邱凤婷, 过志峰, 张宗科, 等. 基于改进SVM分类法的SAR图像水体面积提取研究[J]. 地球信息科学学报, 2022, 24(5):940-948.
[14] 姜爱辉. 文化遗产地SAR图像相干目标机理与洪灾监测技术研究[D]. 青岛:山东科技大学, 2014.
[15] 黄佳宾, 郭云开, 罗伟茂. 利用Sentinel-1监测武汉市地面沉降[J]. 测绘通报, 2021(9):53-58.
[16] SIMONS M, ROSEN P A. Interferometric synthetic aperture radar geodesy[M]//Treatise on Geophysics. Amsterdam:Elsevier, 2007:391-446.
[17] 刘国祥, 丁晓利, 陈永奇,等. 极具潜力的空间对地观测新技术:合成孔径雷达干涉[J]. 地球科学进展, 2000, 15(6):734-740.
[18] GABRIEL A K, GOLDSTEIN R M, ZEBKER H A. Mapping small elevation changes over large areas:differential radar interferometry[J]. Journal of Geophysical Research, 1989, 94(B7):9183.