Title :
Application Study of PS-DInSAR Technique Fusing Multi-metadata in Urban Ground Deformation Survey
Author :
Long Sichun ; Li Tao ; Liu Jingnan
Author_Institution :
GNSS Res. Center, Wuhan Univ., Wuhan, China
Abstract :
PS-DInSAR technique fusing multi-metadata and its basic flow are expounded considering limitations of conventional D-InSAR in atmospheric delay and space-time decoherence. It is held that multi-metadata helps to weaken the influence of systematic error and improve the surveying precision and model steadiness of PS-DInSAR. Tianjing City is surveyed in PS-DInSAR fusing ENVISAT ASAR from 2003 to 2007, GPS, SRTM3-DEM and leveling data, which greatly weakens the influence of atmospheric delay, space-time decoherence and systematic error. The precise deformation of the studied area in that period is obtained.
Keywords :
Global Positioning System; digital elevation models; geomorphology; geophysical signal processing; meta data; radar interferometry; remote sensing by radar; sensor fusion; surveying; synthetic aperture radar; topography (Earth); AD 2003 to 2007; ENVISAT ASAR; GPS; PS-DInSAR technique; SRTM3-DEM; Tianjing city survey; leveling data; model steadiness; multimetadata fusion; surveying precision; urban ground deformation survey; Atmosphere; Atmospheric modeling; Global Positioning System; Interferometry; Master-slave; Propagation delay; Radar imaging; Radar scattering; Satellite navigation systems; Space technology; PS-DInSAR; atmospheric delay; data fusion; ground deformation; space-time decoherence;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.400
