Journal of Xidian University ›› 2021, Vol. 48 ›› Issue (2): 109-116.doi: 10.19665/j.issn1001-2400.2021.02.014

• Special Issue: Advances in Radar Technology • Previous Articles     Next Articles

Separation and imaging of the anisotropic scattering targets in the wide-angle SAR

WANG Xin(),CHANG Guiqing(),CHI Chenchen()   

  1. School of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210009,China
  • Received:2020-10-14 Revised:2021-02-26 Online:2021-04-20 Published:2021-04-28


In the wide-angle synthetic aperture radar(SAR),the scattering behavior of many illuminated objects might vary with the observation angle,which results in the degradation of the resolution and interpretability of the reconstructed imagery.To solve this problem,a sparse-based source separation and imaging method is proposed in this paper.The distinct scattering behaviors of the isotropic and anisotropic scattering targets are employed to formulate a composite projection operator.Then,the sparse constraint is utilized to suppress the cross-projection energy and imaging of the mix-received wide-angle SAR data is realized.Finally,the imagery of the anisotropic scattering targets can be derived with improved focal quality and interpretability.Numerical simulation verifies the validity of the proposed methodology.The resolution and resolution of the reconstructed image have been significantly improved.

Key words: wide-angle synthetic aperture radar, anisotropic scattering, joint sparse-based processing

CLC Number: 

  • TN975