Title :
COSMO-SkyMed Spotlight Interferometry Over Rural Areas: The Slumgullion Landslide in Colorado, USA
Author :
Milillo, Pietro ; Fielding, Eric J. ; Shulz, William H. ; Delbridge, Brent ; Burgmann, Roland
Author_Institution :
Sch. of Eng., Univ. of Basilicata, Potenza, Italy
Abstract :
In the last 7 years, spaceborne synthetic aperture radar (SAR) data with resolution of better than a meter acquired by satellites in spotlight mode offered an unprecedented improvement in SAR interferometry (InSAR). Most attention has been focused on monitoring urban areas and man-made infrastructure exploiting geometric accuracy, stability, and phase fidelity of the spotlight mode. In this paper, we explore the potential application of the COSMO-SkyMed® Spotlight mode to rural areas where decorrelation is substantial and rapidly increases with time. We focus on the rapid repeat times of as short as one day possible with the COSMO-SkyMed® constellation. We further present a qualitative analysis of spotlight interferometry over the Slumgullion landslide in southwest Colorado, which moves at rates of more than 1 cm/day.
Keywords :
geometry; geomorphology; geophysical techniques; radar interferometry; spaceborne radar; synthetic aperture radar; COSMO-SkyMed constellation; COSMO-SkyMed spotlight interferometry; COSMO-SkyMed spotlight mode potential application; InSAR; SAR data; SAR interferometry; Slumgullion landslide; USA; geometric accuracy; geometric stability; man-made infrastructure; rural area; short repeat time; southwest Colorado; spaceborne synthetic aperture radar data; spotlight interferometry qualitative analysis; spotlight mode phase fidelity; urban area monitoring; Azimuth; Geometry; Interferometry; Radar tracking; Satellites; Synthetic aperture radar; Terrain factors; COSMO-SkyMed (CSK); SAR interferometry (InSAR); landslide; spotlight interferometry;
Journal_Title :
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of
DOI :
10.1109/JSTARS.2014.2345664