Improved Goldstein SAR Interferogram Filter Based on Adaptive-Neighborhood Technique

	Improved Goldstein SAR Interferogram Filter Based on Adaptive-Neighborhood Technique
	Song, Rui 1; Guo, Huadong 1; Liu, Guang 1; Perski, Zbigniew 1; Yue, Huanyin 1; Han, Chunming 1; Fan, Jinghui 1
刊名	IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
	2015
卷号	12 期号:1 页码:129-140
关键词	Adaptive neighborhood Goldstein filter synthetic aperture radar (SAR) interferogram
通讯作者	Liu, G (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China.
英文摘要	The Goldstein filter is one of the most commonly used filters for synthetic aperture radar (SAR) interferograms. The level of noise after filtering is controlled by a filter parameter, "alpha," the value of which is determined by pixels within the moving window. However, when there exist different features within a single filter window, especially along the border, the value of alpha as estimated from the pixels within the window can be inaccurate and this may result in blurred borders in filtered interferograms. This letter proposes a modified Goldstein filter based on the adaptive-neighborhood technique. The idea of this method is to filter each pixel of the interferogram within an adjusted filter patch. In this adjusted patch, the adaptive-neighborhood pixels retain the original phase values while the "background" pixels are replaced by the mean value of adaptive-neighborhood pixels. Then, the Fourier transform of the complex phase is applied to this adjusted filter patch. The difficulty of estimating the noise level near the borders of different features can be decreased using this new filtering method. The quantitative results from real data show that this newly developed method could reduce the phase noise efficiently while also outperforming the Goldstein, Baran and empirical mode decomposition (EMD) filters by preserving the edges in interferograms.
研究领域[WOS]	Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000340952500029
内容类型	期刊论文
源URL	[http://ir.ceode.ac.cn/handle/183411/38346]
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	1.[Song, Rui 2.Guo, Huadong 3.Liu, Guang 4.Han, Chunming] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China 5.[Song, Rui] Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.[Perski, Zbigniew] Polish Geol Inst, Carpathian Branch, Natl Res Inst, PL-31560 Krakow, Poland 7.[Yue, Huanyin] Natl Remote Sensing Ctr China, Beijing 100036, Peoples R China 8.[Fan, Jinghui] China Aero Geophys Survey & Remote Sensing Ctr La, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Song, Rui,Guo, Huadong,Liu, Guang,et al. Improved Goldstein SAR Interferogram Filter Based on Adaptive-Neighborhood Technique[J]. IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,2015,12(1):129-140.
APA	Song, Rui.,Guo, Huadong.,Liu, Guang.,Perski, Zbigniew.,Yue, Huanyin.,...&Fan, Jinghui.(2015).Improved Goldstein SAR Interferogram Filter Based on Adaptive-Neighborhood Technique.IEEE GEOSCIENCE AND REMOTE SENSING LETTERS,12(1),129-140.
MLA	Song, Rui,et al."Improved Goldstein SAR Interferogram Filter Based on Adaptive-Neighborhood Technique".IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 12.1(2015):129-140.