J4 ›› 2014, Vol. 41 ›› Issue (6): 18-24.doi: 10.3969/j.issn.1001-2400.2014.06.004

• Original Articles • Previous Articles     Next Articles

Novel polarimetric target signal reconstruction method jointed with attributed scattering centers

DUAN Jia;XING Mengdao;ZHANG Lei;WANG Jinwei;LIANG Yi   

  1.  (National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China)
  • Received:2013-08-12 Online:2014-12-20 Published:2015-01-19
  • Contact: DUAN Jia E-mail:bifiduan119@126.com

Abstract:

Traditional polarimetric target decomposition (PTD) methods decompose the scattering mechanism of every pixel into a weighted sum of basic scattering mechanisms, in which the whole feature of assemblies can hardly be revealed. Moreover, the man-made targets are frequently of low signal-to-noise ratios. Directly applying the PTD methods can hardly reveal the real scattering mechanism of targets. Therefore, the fully polarimetric attributed scattering center model is brought in to decompose the target signal into a set of classical attributed scattering centers to preserve integral properties. Moreover, the parameter is estimated with a high anti-noise property by joint polarization. Based on these, a novel polarimetric target signal reconstruction method jointed with attributed scattering centers is proposed in this paper. The proposed method is capable not only of reconstructing a target signal under low signal-to-noise ratios but also of preserving the integral properties of typical attributed scattering centers. As a result, the visualization of the polarimetric image has been improved effectively.

Key words: polarimetric image, attributed scattering center, parameter estimation, signal reconstruction