基于升降轨SAR数据的地下核爆参数反演与3D形变监测方法
Parameter Inversion and 3D Deformation Monitoring Method of Underground Nuclear Explosion Based on Ascending and Descending SAR Data
贺黎明 1康家帅 1郭聪 1王兴杰1
作者信息
- 1. 东北大学 资源与土木工程学院,辽宁 沈阳 110819
- 折叠
摘要
以朝鲜第6次地下核试验为例,基于升降轨ALOS-2 SAR数据,首先利用D-InSAR技术获取核试验场的视线向形变,以此为基础,基于贝叶斯反演方法确定核爆参数,然后引入POT技术测量核试验场方位向和距离向形变,最后,融合D-InSAR与POT结果计算核试验地表三维形变场.研究发现,核爆位于朝鲜丰溪里试验场万塔山下,其坐标为东经129.0792°,北纬41.3026°,深度约为550 m,核爆导致发生水平方向位移约3 m,垂直方向位移约1 m.结果表明天基SAR遥感技术,特别是长波段SAR,在地下核试验监测中具有重要的应用价值,可为地下核试验监测提供新思路.
Abstract
Taking the sixth underground nuclear test of North Korea as an example,based on the ascending and descending ALOS-2 SAR data,firstly,the line-of-sight deformation of the nuclear test site is obtained by D-InSAR technology,and the nuclear explosion parameters are determined by Bayesian inversion method.Then,the POT technology is introduced to measure the azimuth and range deformation of the nuclear test site.Finally,the D-InSAR and POT results are combined to calculate the three-dimensional surface deformation field of the nuclear test site.This study found that the nuclear explosion was located beneath the Wanta Mountain at the Punggye-ri test site in the Democratic People's Republic of Korea.The longitude and latitude of the explosion are 129.0792° east longitude and 41.3026° north latitude,with a depth of approximately 550 m.The nuclear explosion resulted in a horizontal displacement of about 3 m and vertical subsidence of about 1 m.The results indicate that the significance of space-based SAR remote sensing technology,especially long-band SAR,in monitoring underground nuclear test,and it could offer new ideas for underground nuclear test monitoring.
关键词
地下核试验/InSAR/核爆参数反演/像素偏移量跟踪/三维形变场Key words
underground nuclear test/InSAR/nuclear explosion parameter inversion/pixel offset tracking/three-dimensional deformation field引用本文复制引用
基金项目
国家自然科学基金(41974028)
中央高校基本科研业务费专项(N2201013)
出版年
2024
NETL
NSTL
维普
万方数据