干涉合成孔径雷达
对流层
山崩
遥感
合成孔径雷达
环境科学
地质学
大气校正
气候学
地震学
卫星
航空航天工程
工程类
作者
Hao Zhang,Keren Dai,Saied Pirasteh,R. Li,Jianming Xiang,Zhenhong Li
出处
期刊:IEEE Transactions on Geoscience and Remote Sensing
[Institute of Electrical and Electronics Engineers]
日期:2023-01-01
卷期号:61: 1-14
被引量:4
标识
DOI:10.1109/tgrs.2023.3307477
摘要
Synthetic aperture radar interferometry (InSAR) technology has been widely used for landslide monitoring in mountainous areas. The troposphere in steep mountainous areas is affected by the variable topography, temperature, and humidity, which differs from that in plain areas and thus exhibits large spatial heterogeneity. Traditional InSAR troposphere correction methods are limited in this area, and the accuracy of InSAR measurements will be significantly affected. In this paper, we proposed a tropospheric delay correction method based on deep learning (AtmNet) without external data considering the spatial-heterogenetiy in each individual interferogram. The tropospheric correction and landslides monitoring based on Sentinel-1 SAR data was carried out in Mao County, a high landslide-prone area in southwest Sichuan Province (China). A simulation experiment was conducted to analyze the adaptability of the model and evaluate the effectiveness of the AtmNet method. Furthermore, we demonstrated the good performance of the AtmNet method through a comparison with the linear model (LM) and GACOS method, revealing that the proposed method could effectively model the spatial heterogeneity of tropospheric delay in steep mountains. The slope displacements that cannot be seen in the interferogram were very clear after the tropospheric delay correction. This method provides important technical support for the accurate DInSAR and time-series InSAR for landslide monitoring in steep mountainous areas in the future.
科研通智能强力驱动
Strongly Powered by AbleSci AI