测绘通报 ›› 2023, Vol. 0 ›› Issue (3): 79-83,127.doi: 10.13474/j.cnki.11-2246.2023.0076

• 工程测量分会年会(2022年)优选论文 • 上一篇    下一篇

微型地基干涉雷达变形数据后续处理

张凌子, 张涛, 邹进贵   

  1. 武汉大学测绘学院, 湖北 武汉 430079
  • 收稿日期:2022-07-06 发布日期:2023-04-04
  • 通讯作者: 张涛。E-mail:uhwsin@qq.com
  • 作者简介:张凌子(2000-),男,硕士生,主要研究方向大地测量与测绘工程。E-mail:zlingzi_2000@163.com
  • 基金资助:
    国家自然科学基金(41871373)

Subsequent processing of deformation data of miniature ground-based interferometric radar

ZHANG Lingzi, ZHANG Tao, ZOU Jingui   

  1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
  • Received:2022-07-06 Published:2023-04-04

摘要: 基于笔者所在单位研制的微型地基干涉雷达,结合微型地基高速实孔径干涉雷达获取的重庆赖家桥大桥变形数据实例,本文对变形数据后续处理方法进行了研究。针对变形数据中存在的噪声及由于遮挡等原因造成的相位断裂问题,提出了处理方法并进行解决;针对噪声问题,对多种滤波器的去噪效果进行了仿真对比,小波变换滤波器效果最好;针对相位断裂问题,提出了一种基于变形数据时频特征的相位断裂探测与修复算法,实现了对相位断裂问题的自动化处理,效果显著。

关键词: 地基干涉雷达, 变形数据, 相位断裂, 滤波

Abstract: Based on the micro-ground-based interferometric radar developed by School of Geodesy and Geomatics of Wuhan University, For the deformation data of Chongqing Laijia Bridge obtained by micro-ground-based high-speed real aperture interferometric radar, the subsequent processing method of deformation data is studied. Aiming at the problems of noise and phase fracture in deformation data due to occlusion, the processing method is proposed to solve them. On the noise problem, the denoising effects of various filters are simulated and compared, and the conclusion that the wavelet transformfilter has the best effect is obtained. In the phase fracture problem, a phase fracture detection and repair algorithm based on time-frequency characteristics of deformation data is proposed to realize the automatic treatment of phase fracture problem, and the effect is remarkable.

Key words: ground-based interference radar, deformation data, phase fracture, filter

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