DOI: 10.1016/j.jag.2013.10.007
Scopus记录号: 2-s2.0-84897407268
论文题名: How second generation SAR systems are impacting the analysis of ground deformation
作者: Sansosti E ; , Berardino P ; , Bonano M ; , Calò F ; , Castaldo R ; , Casu F ; , Manunta M ; , Manzo M ; , Pepe A ; , Pepe S ; , Solaro G ; , Tizzani P ; , Zeni G ; , Lanari R
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2014
卷: 28, 期: 1 起始页码: 1
结束页码: 11
语种: 英语
英文关键词: COSMO-SkyMed
; Interferometry
; Monitoring
; Radar
; SAR
; Satellite
Scopus关键词: ALOS
; COSMO-SkyMed
; deformation
; Envisat-1
; ERS-1
; ERS-2
; radar imagery
; radar interferometry
; satellite sensor
; spatial resolution
; synthetic aperture radar
英文摘要: In recent years, a second generation of Synthetic Aperture Radar (SAR) satellite sensor has been designed and, partially, put into operation, leading to an important breakthrough in Earth Science studies. The common characteristics of such new systems are, indeed, a reduced revisit time (as short as a few days) and, in most cases, an improved spatial resolution (as small as a few meters), providing scientists with unprecedented data for the mapping and monitoring of natural and human-induced hazards. This paper provides an overview on the new observational capability offered by the second generation of SAR sensors, especially in the field of ground deformation analysis for mitigating the risk associated with natural and human-induced hazards. In particular, we exploit the high resolution X-band data acquired by the COSMO-SkyMed (CSK) constellation to show how deformation phenomena characterized by limited spatial extent and extremely fast dynamics can be detected and investigated in details. Whenever possible, we compare the achieved results with those obtained by using data collected by the first generation ERS-1/2 and ENVISAT systems. A comparison with one ALOS satellite dataset is also included. Most of the results, based on the application of Differential SAR Interferometry (DInSAR) techniques, highlight how this technology is not anymore just a sophisticated tool for remotely studying surface deformation phenomena, but it is becoming an operational system for near-real time deformation monitoring. Moreover, we also show how the improved spatial resolution extends the possibility to exploit SAR image amplitude, instead of phase, for direct comparison with optical data and for imaging large deformation episodes, typically associated with strong seismic events, for which DInSAR may fail. © 2013 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79785
Appears in Collections: 气候变化事实与影响
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作者单位: National Research Council (CNR) of Italy, Istituto per il Rilevamento Elettromagnetico dell'Ambiente (IREA), via Diocleziano 328, 80124 Napoli, Italy
Recommended Citation:
Sansosti E,, Berardino P,, Bonano M,et al. How second generation SAR systems are impacting the analysis of ground deformation[J]. International Journal of Applied Earth Observation and Geoinformation,2014-01-01,28(1)