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SAR COHERENCE CHANGE DETECTION OF URBAN AREAS AFFECTED BY DISASTERS USING SENTINEL-1 IMAGERY
SAR Coherence Change Detection Coherence maps Hurricane earthquake
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2018/5/15
The study focuses on two study areas: San Juan in Puerto Rico, which was affected by Hurricane Maria in September 2017, and Sarpol Zahab in Iran, which was one of the towns affected by an earthquake i...
EXPLOITING MULTI-TEMPORAL SENTINEL-1 SAR DATA FOR FLOOD EXTEND MAPPING
Flood Disaster Sentinel-1 Threshold Change detection Deep learning
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2018/4/18
Recently, global climate change is one of the biggest challenges in the world. Dense downfall and following catastrophic floods are one of the most destructive natural hazards among all. Consequences ...
POST-HURRICANE DAMAGE ASSESSMENT ON GREENHOUSE FIELDS WITH USE OF SAR DATA
SAR Tornadoes Disaster Managemen zGreenhouses Remote Sensing SENTİ NEL
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2018/5/8
Hurricanes occur without any control of human-being, and it causes large scale loss of life and properties. They happen in the very short timeline and cannot be stopped by the people after it starts t...
DETECTION OF LANDSLIDES WITH SAR POLARYMETRY: CASE STUDY OF SOUTH-EASTERN COLOMBIA
Backscattering Coefficient Dispersion Mechanism Landslides Polarimetry SAR (PolSAR) Entropy – Alpha Parameter Classification Principal Component Analysis
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2018/5/8
SAR polarimetry (PolSAR) is a method that can be used to investigate landslides. Polarimetric scattering power decomposition allows to separate the total power received by the SAR antenna, which is di...
重大自然灾害监测中的控制、监控及高倍率SAR压缩算法研究与改进
灾害监测 图像压缩 卫星遥感 遥感数据处理
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2008/10/14
一、概述:原“八五”系统是采用JEPG压缩算法,该方法在压缩超过30倍时,其方块效应就明显增加。由于“九五”系统中传输的为3米图像,其数据量增加了一倍,因此在卫星信道不变的情况下,必须提高压缩倍率、系统控制软硬件速度和研制有效的监控方法以提高其可靠性。因此该项目在06课题的基础上,又不断地对基于小波压缩算法的图像数据压缩软件进行了改进,经过改进算法获得的重建图像,在客观评价上表现为峰值信噪比有一定...