Refraction correction and coordinate displacement compensation in nearshore bathymetry using ICESat-2 lidar data and remote-sensing images

被引：29
|
作者：
Chen, Yifu [1 ,2 ]
Zhu, Zhen [2 ]
Le, Yuan [3 ]
Qiu, Zhenge [4 ]
Chen, Gang [5 ]
Wang, Lizhe [2 ,6 ]
机构：
[1] Minist Educ, Key Lab Geol Survey & Evaluat, 388 Lumo Rd, Wuhan 430074, Peoples R China
[2] China Univ Geosci Wuhan, Sch Comp Sci, 388 Lumo Rd, Wuhan 430074, Peoples R China
[3] China Univ Geosci Wuhan, Sch Geog & Informat Engn, 388 Lumo Rd, Wuhan 430074, Peoples R China
[4] Shanghai Ocean Univ, Res Ctr Ocean Mapping & Applicat, 999 Huchenghuan Rd, Shanghai 200090, Peoples R China
[5] China Univ Geosci Wuhan, Sch Marine Sci & Technol, 388 Lumo Rd, Wuhan 430074, Peoples R China
[6] China Univ Geosci Wuhan, Hubei Key Lab Intelligent Geoinformat Proc, 388 Lumo Rd, Wuhan 430074, Peoples R China
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 02期
基金：
中国国家自然科学基金;
关键词：
AIRBORNE LIDAR; ALGORITHM; MABEL; ICE;
D O I：
10.1364/OE.409941
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In nearshore bathymetry based on the Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2), water refraction causes a position displacement of the seafloor signal photon, decreasing the bathymetric accuracy. A novel refraction-correction method is proposed for the ICESat-2. Based on the experimental results and statistical analysis, it is illustrated that the displacement in elevation direction reaches several meters at the relative depth. The displacement in the along- and cross-track directions is very small, ranging from millimeters to centimeters. Finally, the relationship of refraction displacements with various incident angles and water depths is analyzed in detail, revealing the nearshore bathymetry characteristics of ICESat-2. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：2411 / 2430
页数：20
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