Ground settlement monitoring from temporarily persistent scatterers between two SAR acquisitions

Zhang Lei; Xiaoli Ding; Feng Guangcai; Lu Zhong

doi:10.1109/URS.2009.5137659

Ground settlement monitoring from temporarily persistent scatterers between two SAR acquisitions

Zhang Lei, Xiaoli Ding, Feng Guangcai, Lu Zhong

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

We present an improved differential interferometric synthetic aperture radar (DInSAR) analysis method that measures motions of scatterers whose phases are stable between two SAR acquisitions. Such scatterers are referred to as temporarily persistent scatterers (TPS) for simplicity. Unlike the persistent scatterer InSAR (PS-InSAR) method that relies on a time-series of interferograms, the new algorithm needs only one interferogram. TPS are identified based on pixel offsets between two SAR images, and are specially coregistered based on their estimated offsets instead of a global polynomial for the whole image. Phase unwrapping is carried out based on an algorithm for sparse data points. The method is successfully applied to measure the settlement in the Hong Kong Airport area. The buildings surrounded by vegetation were successfully selected as TPS and the tiny deformation signal over the area was detected.

Original language	English
Title of host publication	2009 Joint Urban Remote Sensing Event
DOIs	https://doi.org/10.1109/URS.2009.5137659
Publication status	Published - 26 Oct 2009
Event	2009 Joint Urban Remote Sensing Event - Shanghai, China Duration: 20 May 2009 → 22 May 2009

Conference

Conference	2009 Joint Urban Remote Sensing Event
Country/Territory	China
City	Shanghai
Period	20/05/09 → 22/05/09

ASJC Scopus subject areas

Artificial Intelligence
Computer Networks and Communications
Ecology
Nature and Landscape Conservation

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10.1109/URS.2009.5137659

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title = "Ground settlement monitoring from temporarily persistent scatterers between two SAR acquisitions",

abstract = "We present an improved differential interferometric synthetic aperture radar (DInSAR) analysis method that measures motions of scatterers whose phases are stable between two SAR acquisitions. Such scatterers are referred to as temporarily persistent scatterers (TPS) for simplicity. Unlike the persistent scatterer InSAR (PS-InSAR) method that relies on a time-series of interferograms, the new algorithm needs only one interferogram. TPS are identified based on pixel offsets between two SAR images, and are specially coregistered based on their estimated offsets instead of a global polynomial for the whole image. Phase unwrapping is carried out based on an algorithm for sparse data points. The method is successfully applied to measure the settlement in the Hong Kong Airport area. The buildings surrounded by vegetation were successfully selected as TPS and the tiny deformation signal over the area was detected.",

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year = "2009",

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doi = "10.1109/URS.2009.5137659",

language = "English",

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AU - Lei, Zhang

AU - Ding, Xiaoli

AU - Guangcai, Feng

AU - Zhong, Lu

PY - 2009/10/26

Y1 - 2009/10/26

N2 - We present an improved differential interferometric synthetic aperture radar (DInSAR) analysis method that measures motions of scatterers whose phases are stable between two SAR acquisitions. Such scatterers are referred to as temporarily persistent scatterers (TPS) for simplicity. Unlike the persistent scatterer InSAR (PS-InSAR) method that relies on a time-series of interferograms, the new algorithm needs only one interferogram. TPS are identified based on pixel offsets between two SAR images, and are specially coregistered based on their estimated offsets instead of a global polynomial for the whole image. Phase unwrapping is carried out based on an algorithm for sparse data points. The method is successfully applied to measure the settlement in the Hong Kong Airport area. The buildings surrounded by vegetation were successfully selected as TPS and the tiny deformation signal over the area was detected.

AB - We present an improved differential interferometric synthetic aperture radar (DInSAR) analysis method that measures motions of scatterers whose phases are stable between two SAR acquisitions. Such scatterers are referred to as temporarily persistent scatterers (TPS) for simplicity. Unlike the persistent scatterer InSAR (PS-InSAR) method that relies on a time-series of interferograms, the new algorithm needs only one interferogram. TPS are identified based on pixel offsets between two SAR images, and are specially coregistered based on their estimated offsets instead of a global polynomial for the whole image. Phase unwrapping is carried out based on an algorithm for sparse data points. The method is successfully applied to measure the settlement in the Hong Kong Airport area. The buildings surrounded by vegetation were successfully selected as TPS and the tiny deformation signal over the area was detected.

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DO - 10.1109/URS.2009.5137659

M3 - Conference article published in proceeding or book

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BT - 2009 Joint Urban Remote Sensing Event

T2 - 2009 Joint Urban Remote Sensing Event

Y2 - 20 May 2009 through 22 May 2009

ER -

Ground settlement monitoring from temporarily persistent scatterers between two SAR acquisitions

Abstract

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ASJC Scopus subject areas

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