东北大学学报（自然科学版）

东北大学学报（自然科学版） ›› 2024, Vol. 45 ›› Issue (3): 382-390.DOI: 10.12068/j.issn.1005-3026.2024.03.010

• 资源与土木工程 • 上一篇    下一篇

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

贺黎明(), 康家帅, 郭聪, 王兴杰   

  1. 东北大学 资源与土木工程学院，辽宁 沈阳 110819
  • 收稿日期:2022-10-21 出版日期:2024-03-15 发布日期:2024-05-17
  • 通讯作者: 贺黎明
  • 作者简介:贺黎明（1984-），男，江西萍乡人，东北大学副教授.
  • 基金资助:
    国家自然科学基金资助项目(41974028);中央高校基本科研业务费专项资金资助项目(N2201013)

Parameter Inversion and 3D Deformation Monitoring Method of Underground Nuclear Explosion Based on Ascending and Descending SAR Data

Li-ming HE(), Jia-shuai KANG, Cong GUO, Xing-jie WANG   

  1. School of Resources & Civil Engineering，Northeastern University，Shenyang 110819，China.
  • Received:2022-10-21 Online:2024-03-15 Published:2024-05-17
  • Contact: Li-ming HE
  • About author:HE Li-ming， E-mail： heliming@mail.neu.edu.cn

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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129.079 2°，北纬41.302 6°，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.

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

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 129.079 2° east longitude and 41.302 6° 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.

Key words: underground nuclear test, InSAR, nuclear explosion parameter inversion, pixel offset tracking, three‐dimensional deformation field

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