研究目的
To develop an automatic service for the monitoring of weather-related hazards using SAR, including the development of SAR-derived value-added products, a cloud-based production and delivery pipeline, and the application of the developed hazard monitoring service in operational response scenarios.
研究成果
The developed SAR-based hazard monitoring service has been successfully integrated into operational response workflows, providing valuable information for emergency response planning. Continuous improvement of the service is facilitated by feedback from end-users.
研究不足
SAR-based change detection products tended to underestimate flood extent in areas that had seen large amounts of rain in the weeks leading up to an event (pre-event moisture masked flood impacts). Currently, no sufficiently-accurate public DEM sources have been identified for Greenland, Eurasia above 60° northern latitude, and Antarctica.
1:Experimental Design and Method Selection:
The study involved the development of SAR-derived value-added products for hazard monitoring, including Radiometrically Terrain Corrected (RTC) SAR image products, SAR-based change detection maps, and RGB composites from dual-pol Sentinel-1 data.
2:Sample Selection and Data Sources:
Sentinel-1 SAR data was used, with a near-global DEM compiled from 1 arc-second SRTM data and National Elevation Dataset (NED) sources for RTC processing.
3:List of Experimental Equipment and Materials:
Sentinel-1 SAR data, GAMMA RS software for RTC processing, and cloud-based processing machines for automatic product generation.
4:Experimental Procedures and Operational Workflow:
The processing algorithms were integrated into ASF’s HyP3 system for automatic product generation and dissemination. Products were delivered to NASA SPoRT for inspection and enhancement before being used by FEMA.
5:Data Analysis Methods:
The performance of SAR-based hazard products was evaluated in several emergency response situations, with feedback collected for continuous improvement.
独家科研数据包,助您复现前沿成果,加速创新突破
获取完整内容