2007
DOI: 10.1007/s11431-007-6009-3
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Integration of InSAR and GPS for hydraulic engineering

Abstract: Interferometric synthetic aperture radar (InSAR) is a potential earth observation approach, and it has been demonstrated to have a variety of applications in measuring ground movement, urban subsidence and landslides. Currently InSAR provides the ability to map accurate DEM and measure ground deformation to sub-centimeter accuracy. However, many factors affect InSAR to measure ground movement since dam constructions are built in a large scale area with a complicated climate and unstable geology. This paper dis… Show more

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Cited by 15 publications
(9 citation statements)
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“…In higher latitude areas, in contrast, the satellite availability is limited, and they are in a geometry leading to lower quality results. Furthermore, the accuracy in horizontal coordinates is much higher than in the vertical ones [38]. For all these reasons efforts should be made to increase the number and improve the geometry of geodetic satellites and make their signals independent of the GPS satellites administrated by the US Navy; this is indeed the aim of the European Galileo mission, still at non-operational level.…”
Section: Discussionmentioning
confidence: 99%
“…In higher latitude areas, in contrast, the satellite availability is limited, and they are in a geometry leading to lower quality results. Furthermore, the accuracy in horizontal coordinates is much higher than in the vertical ones [38]. For all these reasons efforts should be made to increase the number and improve the geometry of geodetic satellites and make their signals independent of the GPS satellites administrated by the US Navy; this is indeed the aim of the European Galileo mission, still at non-operational level.…”
Section: Discussionmentioning
confidence: 99%
“…GPS can provide 3D information at each GPS observation points while InSAR can image the line of sight (LOS) component of deformation over a large area at spatial resolution of tens of meters [1][2][3][4]. The technology using GPS to monitor deformation is mature; thus, we just briefly introduce the multiantenna monitoring system, aiming at decreasing the device investment.…”
Section: Methodsmentioning
confidence: 99%
“…However, the combination of two independent SAR images of the same ground pixel target, recorded either simultaneously by two satellite antennas, or with the same antenna at di¤erent times of satellite overpass (the so-called 'repeat-pass method'), can reveal three-dimensional terrain information. In the repeat-pass method it is crucial that the imaging geometry of the first pass be repeated as closely as possible in the second pass -typically less than several kilometres (i.e., with short ''perpendicular baseline'') (He et al 2007, Sandwell 2008. The reason for this condition is the geometric relationships utilised in the interferometric processing of images.…”
Section: Dem Generation Using Insarmentioning
confidence: 99%