H-α Decomposition and Alternative Parameters for Dual Polarization SAR Data
In order to exploit the dual polarization data more efficiently,the H-α decomposition in the HH-V V polarization mode is investigated in this paper.Experiment results indicate that different types of scattering mechanisms can still be separated in the H-α space of the HH-V V polarization mode,although some ambiguities of classes are observed.Moreover,as the scattering angle α has an obscure physical meaning,alternatives such as E and ρ are proposed for both the H and α parameter in this paper.The parameter E,derived from the rotation invariants of the Hermitian matrix,has the same maximum and minimum property as the entropy H,and meanwhile the parameter ρ has an explicit physical meaning as the proportion of the non-surface scattering powers in the total power.Another advantage of the parameters E and ρ is that they can be derived quite simply and efficiently.Further experiment results indicate that the alternative parameters E and ρ possess similar characteristics corresponding to the scattering mechanisms as that of the H and α parameters under the dual polarization mode.
Zili Shan Chao Wang Hong Zhang Jiehong Chen
Center for Earth Observation and Digital Earth,Chinese Academy of Science,Beijing 100094,China;Gradu Center for Earth Observation and Digital Earth,Chinese Academy of Science,Beijing 100094,China
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
1386-1390
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）