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Volume 34 Issue 2
Mar.  2012
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Sun Xi-Long, Yu An-Xi, Dong Zhen, Liang Dian-Nong. A High Resolution Imaging Method for Differential SAR Tomography[J]. Journal of Electronics & Information Technology, 2012, 34(2): 273-278. doi: 10.3724/SP.J.1146.2011.00676
Citation: Sun Xi-Long, Yu An-Xi, Dong Zhen, Liang Dian-Nong. A High Resolution Imaging Method for Differential SAR Tomography[J]. Journal of Electronics & Information Technology, 2012, 34(2): 273-278. doi: 10.3724/SP.J.1146.2011.00676

A High Resolution Imaging Method for Differential SAR Tomography

doi: 10.3724/SP.J.1146.2011.00676
  • Received Date: 2011-07-03
  • Rev Recd Date: 2011-10-31
  • Publish Date: 2012-02-19
  • Four-dimensional reconstruction of urban areas and man-made infrastructure is one of the most important applications of differential SAR tomography. In this situation, the urgent problem of differential SAR tomography is how to achieve satisfying elevation-velocity resolution using sparse samples of space-time plane and preserve azimuth-range resolution simultaneously. An imaging method for differential SAR tomography based on RELAXation (RELAX) algorithm is proposed in the framework of deterministic models. Compared the spatial spectral estimation methods with statistical model, this method do not need to implement a spatial multilooking. Compared with the singular value decomposition method, this method has much better resolution. Results obtained by processing simulated data and real data of ENVISAT-ASAR verify the promising potentiality of this method.
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