人民黄河2025，Vol.47Issue(4)：28-31,37,5.DOI:10.3969/j.issn.1000-1379.2025.04.005
基于原位高光谱的极高悬浮泥沙浓度监测模型研究
Investigation of Monitoring Models for Extremely High Suspended Sediment Concentration Based on In-Situ Hyperspectral Data
摘要
Abstract
Suspended sediment concentration(SSC)is a crucial water quality monitoring parameter.Taking the Wangtuan section of Qingshui River in Ningxia as the study area,an SSC inversion model suitable for waters with extremely high suspended sediment concentra-tion was developed based on in-situ hyperspectral data and SSC measurements from August 26 to November 5,2022.Four empirical models were selected for comparison,including single-band model,band difference model,band ratio model and binary linear model.The results in-dicate that for waters with extremely high suspended sediment concentrations,the single-band model performs poorly,with a coefficient of de-termination(R2)of less than 0.25.The band difference,band ratio and binary linear models are able to reduce the impact of noise and im-prove the model's R2.Overall,the band difference model performs the best,with an R2 greater than 0.40 for the model based on the reflectance difference between the 650-720 nm and 560-700 nm bands.Among which,the R687-R685 model achieves the highest R2 value of 0.76.关键词
原位高光谱/悬浮泥沙浓度/反演模型/宁夏清水河王团段Key words
in-situ hyperspectral/extremely high suspended sediment concentration/inversion model/Wangtuan section of Qingshui River in Ningxia分类
水利科学引用本文复制引用
侯峥,侯英卓,邢前国,马永刚,明星,刘昕悦..基于原位高光谱的极高悬浮泥沙浓度监测模型研究[J].人民黄河,2025,47(4):28-31,37,5.基金项目
山东省创新技术引导计划项目(YDZX2024021) （YDZX2024021）
宁夏回族自治区重点研发计划项目(2023BEG02052) （2023BEG02052）
中国科学院重点仪器研发项目(YJKYYQ20170048) （YJKYYQ20170048）
