J4 ›› 2013, Vol. 40 ›› Issue (4): 37-41.doi: 10.3969/j.issn.1001-2400.2013.04.006

• 研究论文 • 上一篇    下一篇

利用L1范数的多基线InSAR相位解缠绕技术

于瀚雯;保铮   

  1. (西安电子科技大学 雷达信号处理国家重点实验室,陕西 西安  710071)
  • 收稿日期:2012-05-03 出版日期:2013-08-20 发布日期:2013-10-10
  • 通讯作者: 于瀚雯
  • 作者简介:于瀚雯(1985-),男,西安电子科技大学博士研究生,E-mail:yuhanwenxd@gmail.com.
  • 基金资助:

    国家自然科学基金优秀青年基金资助项目(61222108)

L1-norm method for multi-baseline InSAR phase unwrapping

YU Hanwen;BAO Zheng   

  1.  (National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China)
  • Received:2012-05-03 Online:2013-08-20 Published:2013-10-10
  • Contact: YU Hanwen

摘要:

多基线相位解缠绕是多基线干涉合成孔径雷达信号处理中的关键步骤,但是传统的多基线相位解缠绕算法存在噪声鲁棒性差的缺点.为了解决这一问题,提出了一种基于L1范数的多基线相位解缠绕算法.该算法通过借助L1范数这一优化模型,将多基线干涉合成孔径雷达获得的多幅干涉相位图之间的关系融入到了传统单基线L1范数相位解缠绕的优化模型中.仿真试验的结果表明,该方法具有较好的解缠绕精度,可适用于对复杂地形的测绘.

关键词: 相位解缠绕, 合成孔径雷达, 多基线, 干涉合成孔径雷达, L1范数

Abstract:

Multi-baseline phase unwrapping is a critical processing procedure of multi-baseline synthetic aperture radar interferometry (InSAR). However, it has a disadvantage that it is not robust to noise. In order to solve this problem, in this paper, an L1-norm based single-baseline phase unwrapping method is proposed. By using the L1-norm optimization model, the relation among interferograms obtained by multi-baseline InSAR is combined in the conventional signle-baseline L1-norm phase unwrapping optimization model with this algorithm. Finally, simulated experiments demonstrate that this method has a better accuracy on phase unwrapping results and that it can be applied to measuring the complex terrain.

Key words: phase unwrapping, synthetic aperture radar, multi-baseline, InSAR, L1-norm

中图分类号: 

  • TN957
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