New Method for the π/4 Compact Polarimetric SAR Mode
Compact polarimetric synthetic aperture radar(SAR)is a dual-polarimetric system,which shows promise of reducing the complexity,cost,mass,and data rate of a SAR system.It allows fully polarimetric information reconstructed from compact polarimetry(CP)under some constrains.Two assumptions are required here for the constructing,one is the reflection symmetry,and the other is a relationship model between the co-polarized and cross-polarized channels.In this paper,an improved reconstruction algorithm is proposed according to both the assumptions,and two improvements are according proposed.Since the helix scattering component is always used to take account of the non-reflection symmetric circumstance which mostly appears in complex urban area,helix scattering should be considered in the reconstruction algorithm,especially for the regions with strong orientation angle effects.A modified four-component model-based decomposition algorithm is proposed with a new volume scattering model.Then using the decomposed powers of the four components,the relationship between the co-pol and cross-pol channels is developed instead of the original polarization state extrapolation model.Finally,a ESAR L-band polarimetric dataset over Oberfaffenhofen area is used to demonstrate the effectiveness of the proposed algorithm.
J.J.Yin J.Yang Y.Yamaguchi
Department of Electronic Engineering,Tsinghua University,Beijing 100084,China Faculty of Engineering,Niigata University,Niigata 950-2181 Japan
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
813-817
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）