多光谱遥感影像的两种浅海水深反演模型对比与分析

戚甲伟; 任照宇; 赵金秀; 朱金山

doi:10.3969/j.issn.1001-909X.2020.01.006

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海洋学研究 ›› 2020, Vol. 38 ›› Issue (1) : 50-58. DOI: 10.3969/j.issn.1001-909X.2020.01.006

研究论文

多光谱遥感影像的两种浅海水深反演模型对比与分析

戚甲伟^1,2, 任照宇², 赵金秀², 朱金山^*1,2,3

作者信息 +

Comparison and analysis of two shallow water depth inversion models using multispectral remote sensing images

QI Jiawei^1,2, REN Zhaoyu², ZHAO Jinxiu², ZHU Jinshan^*1,2,3

Author information +

文章历史 +

摘要

利用WorldView-2高分辨率卫星影像,以南海北岛附近海域为研究区,研究了两种水深反演模型——对数变换模型(Stumpf 2003)和双波段线性回归模型(Lyzenga 1985)。分析了不同底质情况下水深与各波段的相关性,并利用L-M(Levenberg-Marquardt)算法求解模型参数,然后对两种模型反演的水深结果的精度进行了对比分析。对于珊瑚底质,Lyzenga 1985模型水深反演的决定系数和均方根误差分别为0.902和1.651,均优于Stumpf 2003模型(0.882,6.421);对于砂质底质,Lyzenga 1985模型水深反演的决定系数和均方根误差分别为0.897和0.529,均优于Stumpf 2003模型(0.779,0.723)。可见,在水体清澈的珊瑚底质和砂质底质区域,Lyzenga 1985模型的水深反演精度均优于Stumpf 2003模型,Lyzenga 1985模型普适性更强,能够呈现出较为稳定的反演效果。

Abstract

Using the WorldView-2 high-resolution satellite images, two models were studied: log transform model(Stumpf 2003) and dual bands linear regression model(Lyzenga 1985). Firstly, the correlation between water depth and each band was analyzed under different sediment conditions. Then the L-M(Levenberg-Marquardt) algorithm was used to solve the model parameters. Finally, the accuracy of the two models was compared and analyzed. The results show that for coral sediment, the determination coefficient and root mean square error of Lyzenga 1985 model are 0.902 and 1.651 respectively, which are better than those of Stumpf 2003 model(0.882, 6.421); For sandy sediment, the determination coefficient and root mean square error of Lyzenga 1985 model are 0.897 and 0.529 respectively, which are better than those of Stumpf 2003 model(0.779, 0.723). It can be seen that Lyzenga 1985 model is better than Stumpf 2003 model in the area of clear coral and sandy sediment, and Lyzenga 1985 model has stronger universality and can present relatively stable inversion effect.

导出引用

戚甲伟, 任照宇, 赵金秀, 朱金山. 多光谱遥感影像的两种浅海水深反演模型对比与分析[J]. 海洋学研究. 2020, 38(1): 50-58 https://doi.org/10.3969/j.issn.1001-909X.2020.01.006

QI Jiawei, REN Zhaoyu, ZHAO Jinxiu, ZHU Jinshan. Comparison and analysis of two shallow water depth inversion models using multispectral remote sensing images[J]. Journal of Marine Sciences. 2020, 38(1): 50-58 https://doi.org/10.3969/j.issn.1001-909X.2020.01.006

中图分类号： P237 P229.1

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