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1InSAR变形监测方法与研究进展显示文摘变形监测是星载InSAR技术应用最为成熟的领域之一。本文首先介绍了InSAR变形监测的基本原理和卫星数据来源;然后对InSAR变形监测方法进行了系统性的分类,分析了D-InSAR、PSInSAR、SBAS-InSAR、DS-InSAR和MAI等方法的技术特点和适用范围;进而从应用的角度分析了InSAR技术在城市、矿山、地震、火山、基础设施、冰川、冻土和滑坡等领域的研究现状和不足之处;最后总结出InSAR变形监测在多维形变和低相干区测量、大气和轨道误差去除和精度评定等方面的前沿问题。朱建军 李志伟 胡俊 2017测绘学报2017,46,10:383
2Analysis of the Quality of Daily DEM Generation with Geosynchronous InSAR显示文摘Up-to-date digital elevation model(DEM)products are essential in many fields such as hazards mitigation and urban management.Airborne and low-earth-orbit(LEO)space-borne interferometric synthetic aperture radar(InSAR)has been proven to be a valuable tool for DEM generation.However,given the limitations of cost and satellite repeat cycles,it is difficult to generate or update DEMs very frequently(e.g.,on a daily basis)for a very large area(e.g.,continental scale or greater).Geosynchronous synthetic aperture radar(GEOSAR)satellites fly in geostationary earth orbits,allowing them to observe the same ground area with a very short revisit time(daily or shorter).This offers great potential for the daily DEM generation that is desirable yet thus far impossible with space-borne sensors.In this work,we systematically analyze the quality of daily GEOSAR DEM.The results indicate that the accuracy of a daily GEOSAR DEM is generally much lower than what can be achieved with typical LEO synthetic aperture radar(SAR)sensors;therefore,it is important to develop techniques to mitigate the effects of errors in GEOSAR DEM generation.Zefa Yang Qingjun Zhang Xiaoli Ding Wu Chen 2020Engineering2020,6,8:5
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