搜索结果: 1-15 共查到“地球物理学 SAR”相关记录20条 . 查询时间(0.199 秒)
HIGH RESOLUTION SAR IMAGING EMPLOYING GEOMETRIC FEATURES FOR EXTRACTING SEISMIC DAMAGE OF BUILDINGS
SAR Imaging Geometry Feature Building Seismic Damage Extraction
2018/5/11
Synthetic Aperture Radar (SAR) image is relatively easy to acquire but difficult for interpretation. This paper probes how to identify seismic damage of building using geometric features of SAR. The S...
ESTIMATION OF SURFACE DEFORMATION DUE TO PASNI EARTHQUAKE USING SAR INTERFEROMETRY
InSAR Surface Deformation Sentinet-1 Earthquake Pasni
2018/5/11
Earthquake cause ground deformation in sedimented surface areas like Pasni and that is a hazard. Such earthquake induced ground displacements can seriously damage building structures. On 7 February 20...
COMPENSATION OF THE IONOSPHERIC EFFECTS ON SAR INTERFEROGRAM BASED ON RANGE SPLIT-SPECTRUM AND AZIMUTH OFFSET METHODS – A CASE STUDY OF YUSHU EARTHQUAKE
InSAR Ionospheric effects Range split-spectrum Azimuth offset Ionosphere correction Yushu earthquake
2018/5/14
InSAR technique can measure the surface deformation with the accuracy of centimeter-level or even millimeter and therefore has been widely used in the deformation monitoring associated with earthquake...
POST-DISASTER DAMAGE ASSESSMENT THROUGH COHERENT CHANGE DETECTION ON SAR IMAGERY
Coherent Change Detection, Synthetic Aperture Radar, Automatic post-disaster damage assessment, Earthquake
2018/5/14
Damage assessment is a fundamental step to support emergency response and recovery activities in a post-earthquake scenario. In recent years, UAVs and satellite optical imagery was applied to assess m...
COHERENT CHANGE DETECTION FOR REPEATED-PASS INTERFEROMETRIC SAR IMAGES: AN APPLICATION TO EARTHQUAKE DAMAGE ASSESSMENT ON BUILDINGS
Building Damages Coherent Change Detection Disasters Earthquake Synthetic Aperture Radar
2018/4/18
During disaster response, the availability of relevant information, delivered in a proper format enabling its use among the different actors involved in response efforts, is key to lessen the impact o...
COHERENT CHANGE DETECTION FOR REPEATED-PASS INTERFEROMETRIC SAR IMAGES: AN APPLICATION TO EARTHQUAKE DAMAGE ASSESSMENT ON BUILDINGS
Building Damages Coherent Change Detection Disasters Earthquake Synthetic Aperture Radar
2018/5/8
During disaster response, the availability of relevant information, delivered in a proper format enabling its use among the different actors involved in response efforts, is key to lessen the impact o...
Satellite differential SAR interferometry for the evaluation of effects of hydrogeological disasters:definition of a scale for damage evaluation
landslide movements damage evaluation differential SAR interferometry remote sensing of land surface Maratea
2015/9/7
In this paper we present the results of monitoring soil movements over an about 10 km2 area around the border between the Calabria and Basilicata regions in Italy. Monitoring has been performed using ...
VESSEL CLASSIFICATION IN COSMO-SKYMED SAR DATA USING HIERARCHICAL FEATURE SELECTION
Ship classification COSMO-SkyMed data
2015/5/7
SAR based ship detection and classification are important elements of maritime monitoring applications. Recently, high-resolution SAR data have opened new possibilities to researchers for achieving ...
机载SAR对海探测时, 探测范围小和时空匹配难等局限使其无法借助风条纹和辅助资料反演海面风矢量.本文在仿真研究CMOD5.N地球物理模型参数的函数关系, 实例分析机载SAR探测图像中距离向均值曲线变化规律的基础上, 发现相同风向、风速条件下, CMOD5.N模型构建的标准曲线和探测图像的距离向均值曲线遵循统一的归一化雷达截面随入射角变化规律, 且两者具有良好的相关性.据此, 本文提出将距离向均值曲...
基于星载SAR信号的TEC反演新方法
星载合成孔径雷达 电子密度不规则体 多重散射 三频相位自适应
2014/12/20
由于星载合成孔径雷达(SAR)系统工作于电离层之上,其信号不可避免地将受到电离层的影响. 背景电离层以及电离层电子密度不规则体多重散射效应可引起距离向图像质量的下降, 在强起伏情况下, 多重散射效应对信号的延迟影响不可忽略. 针对此问题, 本文提出了一种基于SAR回波信号的三频相位自适应TEC反演新方法, 利用反演的结果对电离层的影响进行校正. 给出了校正前后的点目标成像仿真, 结果显示此方法充分...
台湾浅滩浅海水深SAR遥感探测实例研究
SAR 台湾浅滩 浅海水深 遥感探测
2013/11/5
本文基于浅海地形SAR遥感成像机理，提出星载SAR图像浅海水深遥感探测新技术。利用该遥感探测新技术与浅海地形SAR遥感图像，在台湾浅滩海域进行了浅海水深SAR遥感探测实例研究。SAR遥感探测水深值与实测水深值的比较结果显示，SAR遥感探测水深值的均方根误差达到2.5m，误差小于10%。表明SAR具有探测浅海水深的能力，本文提出的浅海水深SAR遥感探测技术是收敛与可行的。
本文以ALOS卫星PALSAR影像为数据源,采用强度图像偏移量方法获得的整个汶川地震地表二维形变场显示,整个映秀-北川地表破裂带全长约240 km,从西南端的虹口往北东方向一直延伸到青川县附近,在虹口及北川县城所在地为两个形变量最大区域,偏移量可达4~6 m,局部更是达到了6~8 m.在高川乡附近出现一斜列拉分阶区,宽约8~10 km.在映秀-北川断层的地表破裂迹线南侧约12 km处还有一条汉旺-...
星载SAR差分干涉测量提取汶川地震同震形变场
差分干涉测量 汶川地震 地震形变
2013/9/25
采用合成孔径雷达差分干涉测量技术对2008年5月12日四川汶川地震(Ms=8.0)的形变信息进行了提取,并开展了研究,利用地震前后ALOS/PALSAR数据,进行重复轨道差分干涉处理,得到了震前—震后的干涉条纹图和形变结果图.由雷达视向形变图可知,此次地震造成了隆起形变,最大形变出现在北川—映秀断裂带上,最大雷达视向形变量超过了90 cm,形变范围较大,川西的大部分地方都出现了不同程度的地表形变....
Inversion of SAR data in active volcanic areas by optimization techniques
SAR data active volcanic areas optimization techniques
2009/11/11
The inversion problem concerns the identification of parameters of a volcanic source causing observable changes in ground deformation data recorded in volcanic areas. In particular, this paper deals w...
Kinematics of the November 12, 1999 (Mw=7.2) Düzce Earthquake Deduced from SAR Interferometry
Düzce earthquake SAR Interferometry GPS elastic modelling source parameters
2009/7/8
On November 12 1999, a destructive earthquake struck the Düzce area, following the 17 August 1999 İzmit earthquake that had occurred to the west about 3 months earlier. The Mw=7.2 Düzce earthqua...