Estimation of Shallow Water Depth Using HJ-1C S-band SAR Data

	Estimation of Shallow Water Depth Using HJ-1C S-band SAR Data
	Bian, Xiaolin; Shao, Yun; Tian, Wei; Zhang, Chunyan
刊名	JOURNAL OF NAVIGATION
	2016
卷号	69 期号:1 页码:113-126
关键词	GENERATION MODEL
通讯作者	Bian, XL (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing, Peoples R China.
英文摘要	This paper presents a shallow water depth estimation methodology using S-band Synthetic Aperture Radar (SAR) data from the HJ-1C satellite. It is based on the shoaling and refraction of long surface gravity waves as they propagate shoreward. A two-scale Bragg scattering model is used to describe the imaging process of long waves by SAR. By computing the Fast Fourier Transformation (FFT) for the selected sub image, wavelength and direction of the long wave can be retrieved from the two-dimensional (2D) spectra with wave tracking technology. Shallow water depths are then obtained from the linear dispersion relation with the calculated angular wave frequency obtained from other sources or first guesses of initial water depths or wave periods. Applicability and effectiveness are tested in the near-shore area of the Fujian province, China. Comparison between the derived results and water depths from an Electronic Navigational Chart (ENC) indicates that HJ-1C SAR is capable of higher resolution underwater topography detection, and the methodology can be used for shallow water depth estimation with good accuracy. The average absolute error and average relative error of the estimated results is 0.86 m and 11.05%, respectively.
学科主题	Engineering; Oceanography
类目[WOS]	Engineering, Marine ; Oceanography
收录类别	SCI
语种	英语
WOS记录号	WOS:000366289900007
内容类型	期刊论文
源URL	[http://ir.radi.ac.cn/handle/183411/39361]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Bian, Xiaolin,Shao, Yun,Tian, Wei,et al. Estimation of Shallow Water Depth Using HJ-1C S-band SAR Data[J]. JOURNAL OF NAVIGATION,2016,69(1):113-126.
APA	Bian, Xiaolin,Shao, Yun,Tian, Wei,&Zhang, Chunyan.(2016).Estimation of Shallow Water Depth Using HJ-1C S-band SAR Data.JOURNAL OF NAVIGATION,69(1),113-126.
MLA	Bian, Xiaolin,et al."Estimation of Shallow Water Depth Using HJ-1C S-band SAR Data".JOURNAL OF NAVIGATION 69.1(2016):113-126.