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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...
The velocity of glacier is the most important parameter in the study of glaciers and remote sensing is a powerful tool to calculate their surface velocities. Due to persistent cloud cover in this region, it is impossible to acquire enough optical images to provide measurements. However, measurement of the offsets between two SAR images is an effective way to determine surface velocity. In order to...
Synthetic Aperture Radar Interferometry (InSAR) provides an invaluable approach to detect the substantial surface deformation due to the Yushu earthquake (Mw=7.1) on April 14, 2010. The crustal deformation that occurred on April 14, 2010 is recorded by the ALOS satellite in ascending passes. Co-seismic deformation field of Yushu earthquake is extracted based on the ALOS/PALSAR data acquired with a...
A case study of INSAR application to monitor the ground subsidence of colliery area in Fengfeng coal mining area, Hebei Province, China is investigated in this paper. Using the data of ENVISAT ASAR and JERS SAR, the interferometric results of this area are derived. At the same time as acquisition of ENVISAT ASAR data, field leveling measurement in this area was carried out, and the historical excavation...
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