江苏省科技期刊可视化阅读平台

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江苏科技信息 ›› 2019, Vol. 36 ›› Issue (10): 33-35.doi: 10.1004-7530/2019-36-10-33

• 基础研究 • 上一篇    下一篇

大量级沉降区域InSAR相位解缠问题研究

冯有元   

  1. 齐齐哈尔大学 计算机与控制工程学院,黑龙江 齐齐哈尔 161006
  • 出版日期:2019-04-10 发布日期:2019-07-09
  • 作者简介:冯有元（1992— ）,男,安徽安庆人,硕士研究生;研究方向：数字图像处理。

Study on phase unwrapping of InSAR in large-scale subsidence region

Youyuan Feng   

  1. School of Computer and Control Engineering, Qiqihar University, Qiqihar 161006, China
  • Online:2019-04-10 Published:2019-07-09

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摘要：

InSAR技术的工作原理是利用两幅SAR复影像的干涉相位差来获取地而目标的三维信息,因此,干涉相位图的质量对系统测量精度的影响极其重要。在大量级沉降区域,干涉图中的噪声十分严重,将会对后续的相位解缠的影响很大,从而导致显著降低数字高程模型的精度。大量级沉降区域的对InSAR技术的影响包括会导致失相干现象的发生,使干涉SAR影像髙精度降低,还会使大量级沉降区域的大梯度形变条件下相位恢复效果差。

关键词: InSAR, 大量级, 沉降区域

Abstract:

The principle of InSAR technology is to use the interference phase difference of two SAR complex images to obtain the three-dimensional information of the ground and target, so the quality of the interferogram is very important to the measurement accuracy of the system. In the settlement region of large scale, the noise in the interferogram is very serious, which will greatly affect the subsequent phase unwrapping, resulting in a significant reduction in the precision of the digital elevation model（Dem）, The main problems of large-scale subsidence region are as follows: less research on high-precision automatic registration of interferometric SAR images under low coherence conditions; lack of research on phase recovery under large gradient deformation conditions of a large number of subsidence region.

Key words: InSAR, heavyweight, subsidence region

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