Measuring Coseismic Displacements With Point-Like Targets Offset Tracking

被引：49

作者：

Hu, Xie ^{[1
]}

Wang, Teng ^{[2
]}

Liao, Mingsheng ^{[1
]}

机构：

[1] Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China

[2] King Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Thuwal 239556900, Saudi Arabia

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2014年 / 11卷 / 01期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金; 国家高技术研究发展计划(863计划); 美国国家科学基金会;

关键词：

Offset tracking; point-like targets; synthetic aperture radar interferometry (InSAR); MAYOR-CUCAPAH EARTHQUAKE; HECTOR MINE; CALIFORNIA; DEFORMATION; INSAR; FIELD;

D O I：

10.1109/LGRS.2013.2256104

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Offset tracking is an important complement to measure large ground displacements in both azimuth and range dimensions where synthetic aperture radar (SAR) interferometry is unfeasible. Subpixel offsets can be obtained by searching for the cross-correlation peak calculated from the match patches uniformly distributed on two SAR images. However, it has its limitations, including redundant computation and incorrect estimations on decorrelated patches. In this letter, we propose a simple strategy that performs offset tracking on detected point-like targets (PT). We first detect image patches within bright PT by using a sinc-like template from a single SAR image and then perform offset tracking on them to obtain the pixel shifts. Compared with the standard method, the application on the 2010 M 7.2 El Mayor-Cucapah earthquake shows that the proposed PT offset tracking can significantly increase the cross-correlation and thus result in both efficiency and reliability improvements.

引用

页码：283 / 287

页数：5

共 22 条

[1]

[Anonymous], 2001, RADAR INTERFEROMETRY

[2] Accuracy of differential shift estimation by correlation and split-bandwidth interferometry for wideband and Delta-k SAR systems [J].

Bamler, R ;

Eineder, M .

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2005, 2 (02) :151-155

[3] Measuring two-dimensional movements using a single InSAR pair [J].

Bechor, Noa B. D. ;

Zebker, Howard A. .

GEOPHYSICAL RESEARCH LETTERS, 2006, 33 (16)

[4] Earth-like sand fluxes on Mars [J].

Bridges, N. T. ;

Ayoub, F. ;

Avouac, J-P. ;

Leprince, S. ;

Lucas, A. ;

Mattson, S. .

NATURE, 2012, 485 (7398) :339-342

[5] Deformation Time-Series Generation in Areas Characterized by Large Displacement Dynamics: The SAR Amplitude Pixel-Offset SBAS Technique [J].

Casu, Francesco ;

Manconi, Andrea ;

Pepe, Antonio ;

Lanari, Riccardo .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2011, 49 (07) :2752-2763

[6] Permanent scatterers in SAR interferometry [J].

Ferretti, A ;

Prati, C ;

Rocca, F .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2001, 39 (01) :8-20

[7] Probing the mechanical properties of seismically active crust with space geodesy:: Study of the coseismic deformation due to the 1992 Mw7.3 Landers (southern California) earthquake -: art. no. B03307 [J].

Fialko, Y .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2004, 109 (B3)

[8] The complete (3-D) surface displacement field in the epicentral area of the 1999 Mw7.1 Hector Mine earthquake, California, from space geodetic observations [J].

Fialko, Y ;

Simons, M ;

Agnew, D .

GEOPHYSICAL RESEARCH LETTERS, 2001, 28 (16) :3063-3066

[9] On trapdoor faulting at Sierra Negra volcano, Galapagos [J].

Jónsson, S ;

Zebker, H ;

Amelung, F .

JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 2005, 144 (1-4) :59-71

[10]

Kampes B. M., 2003, FRINGE 2003 WORKSH F

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