Title :
Ground-based radar interferometry for landslides monitoring: atmospheric and instrumental decorrelation sources on experimental data
Author :
Luzi, Guido ; Pieraccini, Massimiliano ; Mecatti, Daniele ; Noferini, Linhsia ; Guidi, Gabriele ; Moia, Fabio ; Atzeni, Carlo
Author_Institution :
Dept. of Electron. & Telecommun., Univ. of Florence, Italy
Abstract :
The application of ground-based radar interferometry for landslide monitoring is analyzed: a case study based on an experimental campaign carried out in Italy during 2002 is discussed. Interferometric data obtained from coherent synthetic aperture radar (SAR) images acquired by means of C-band ground-based equipment are analyzed. The campaign was aimed at retrieving potential terrain movements of a small landslide observed hundreds of meters away. Critical aspects related to spatial and temporal decorrelation are discussed: the use of optical photogrammetry as a technique for evaluating mechanical stability and correcting geometric distortion is presented. Results also confirmed that the application of ground-based radar interferometry can be attractive and effective if the acquired SAR images maintain an adequate coherence on different dates.
Keywords :
data acquisition; decorrelation; geomorphology; geophysical signal processing; radar imaging; radiowave interferometry; remote sensing by radar; synthetic aperture radar; terrain mapping; topography (Earth); 5.725 GHz; AD 2002; C-band ground-based equipment; Civita di Bagnoregio; Italy; SAR image acquisition; ancient town; atmospheric decorrelation sources; coherent synthetic aperture radar; geometric distortion; ground-based radar interferometry; instrumental decorrelation sources; interferometric data; landslide monitoring; mechanical stability; optical photogrammetry; spatial decorrelation; temporal decorrelation; terrain movements; Adaptive optics; Decorrelation; Image analysis; Instruments; Monitoring; Optical distortion; Optical interferometry; Radar interferometry; Synthetic aperture radar; Terrain factors; 65; Decorrelation; SAR; differential interferometry; ground-based synthetic aperture radar; phase stability; synthetic aperture radar;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2004.836792
