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Recently many studies for application of multi-temporal interferometric SAR technique in monitoring ground motion have been reported. When we focus on number of scenes in high resolution mode of ALOS/PALSAR and ALOS-2/PALSAR-2, available number of scenes for interferometry are limited because of their global observation scenario. ALOS/PALSAR and ALOS-2/PALSAR-2 observation has been conducted with...
In this paper, we present a method for fusing different frequency synthetic aperture radar (SAR) images for improving the accuracy of land subsidence estimation using differential interferometric SAR (DInSAR) technique. Our study area, Kansai International Airport, Osaka, Japan, consists of two landfilled islands, and the subsidence velocity of an island is much larger than that of the other one....
Recently airborne SAR at very high frequencies, such as X- and Ku-bands, has been widely studied for many applications. In these studies, the backscatter properties at different frequencies have been well discussed. However, these properties of the urban objects and structures have not been sufficiently discussed yet. In this paper, we focus on evaluating the difference of Ku- and X-band SAR intensity...
Recently many studies for application of multi-temporal interferometric SAR technique toward monitoring deformation have been reported. In this study high accuracy of estimating subsidence on the river dikes is demonstrated, which has not been reported in those previous studies. Low backscatter and high temporal decorrelation on the grasses covering the surface of the river dike makes the estimation...
Panchromatic (PAN) satellite imagery comprises only a single band but it has finer resolution in comparison to the multi-spectral band imagery. In the case of feature extraction and classification, although the multi-spectral imagery has an advantage in availability of the different aspect of spectral properties of the ground coverage, the recent studies introducing intelligent classification and...
In this paper, we discuss invalidity of the linear mixture model of independent component analysis (ICA) and evaluate an estimation method for the polarization orientation (PO) angle in order to correct the mismatched data model regarding unmixing signals of polarimetric SAR imagery. Firstly, the linear mixture model of ICA and the nonlinear mixture model of the PO effect are described so that we...
Hysteresis smoothing is a filtering method for one-dimensional data, which removes waveform noise with a simple but powerful process. Although it may be applied in two-dimensional data, an inherent problem of severe artifacts makes it difficult to use this method on SAR imagery. In this paper, we take notice of a property appeared when hysteresis smoothing works well on homogeneous areas. We propose...
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