Speckle suppression in synthetic aperture radar ocean internal solitary wave images with curvelet transform

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Speckle suppression in synthetic aperture radar ocean internal solitary wave images with curvelet transform
	Zha Guozhen; He Qingyou; Guan Changlong; Sun Jian; He Mingxia
刊名	ACTA OCEANOLOGICA SINICA
	2016
卷号	35 期号:9 页码:13-21
关键词	curvelet transform internal solitary wave remote sensing speckle noise synthetic aperture radar
通讯作者	Guan, CL (reprint author), Ocean Univ China, Coll Ocean & Atmospher Sci, Qingdao 266100, Peoples R China. ; Guan, CL (reprint author), Ocean Univ China, Phys Oceanog Lab, Qingdao 266100, Peoples R China.
中文摘要	This paper proposes a speckle-suppression method for ocean internal solitary wave (ISW) synthetic aperture radar (SAR) images by using the curvelet transform. The band-shaped signatures of ocean ISWs in SAR images show obvious scale and directional characteristics. The curvelet transform possesses a very high scale and directional sensitivity. Therefore, the curvelet transform is very efficient in analyzing wave signals in SAR images. A noisy ocean ISW SAR image can be decomposed at different scales, directions, and positions using the curvelet transform. The information of the ISWs is centralized in the curvelet coefficients of certain directions under certain scales, whereas the speckle noise is distributed in every scale and direction. By manipulating the curvelet coefficients, the signals of the ISWs can be extracted from the noisy SAR image. Finally, the speckle noise is suppressed and the ISW feature is enhanced by adding the signals of the ISWs back to the original SAR image. Experiments demonstrate the effectiveness of this method.
学科主题	Oceanography
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15251]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Zha Guozhen,He Qingyou,Guan Changlong,et al. Speckle suppression in synthetic aperture radar ocean internal solitary wave images with curvelet transform[J]. ACTA OCEANOLOGICA SINICA,2016,35(9):13-21.
APA	Zha Guozhen,He Qingyou,Guan Changlong,Sun Jian,&He Mingxia.(2016).Speckle suppression in synthetic aperture radar ocean internal solitary wave images with curvelet transform.ACTA OCEANOLOGICA SINICA,35(9),13-21.
MLA	Zha Guozhen,et al."Speckle suppression in synthetic aperture radar ocean internal solitary wave images with curvelet transform".ACTA OCEANOLOGICA SINICA 35.9(2016):13-21.