Baseline distribution optimization and missing data completion in wavelet-based CS-TomoSAR

  • Hui BiEmail author
  • Jianguo Liu
  • Bingchen Zhang
  • Wen Hong
Research Paper


In this paper, we propose a coherence of measurement matrix-based baseline distribution optimization criterion, together with an L 1 regularization missing data completion method for unobserved baselines (not belonging to the actual baseline distribution), to facilitate wavelet-based compressive sensingtomographic synthetic aperture radar imaging (CS-TomoSAR) in forested areas. Using M actual baselines, we first estimate the optimal baseline distribution with N baselines (N > M), including NM unobserved baselines, via the proposed coherence criterion. We then use the geometric relationship between the actual and unobserved baseline distributions to reconstruct the transformation matrix by solving an L 1 regularization problem, and calculate the unobserved baseline data using the measurements of actual baselines and the estimated transformation matrix. Finally, we exploit the wavelet-based CS technique to reconstruct the elevation via the completed data of N baselines. Compared to results obtained using only the data of actual baselines, the recovered image based on the dataset obtained by our proposed method shows higher elevation recovery accuracy and better super-resolution ability. Experimental results based on simulated and real data validated the effectiveness of the proposed method.


tomographic synthetic aperture radar imaging (TomoSAR) compressive sensing (CS) baseline distribution optimization coherence of measurement matrix 



This work was supported by Chinese Academy of Sciences/State Administration of Foreign Experts Affairs International Partnership Program Creative Research Team and National Natural Science Foundation of China (Grant No. 61571419). The authors would like to thank Dragon 3 Project (ID10609) and Prof. Erxue Chen and Prof. Stefano Tebaldini for providing the Biomass dataset.


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Copyright information

© Science China Press and Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Hui Bi
    • 1
    • 2
    Email author
  • Jianguo Liu
    • 3
  • Bingchen Zhang
    • 1
  • Wen Hong
    • 1
  1. 1.Science and Technology on Microwave Imaging Laboratory, Institute of ElectronicsChinese Academy of SciencesBeijingChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.Department of Earth Science and EngineeringImperial College LondonLondonUK

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