POlsar Target Decomposition with Global Orientation Angle Compensation

This paper proposes a global orientation angle (Goa), and its corresponding compensation (GoaC) using unitary matrix. Goa is used to denote target orientation angle. Experimental results show that Goa is with a bell-shaped histogram, which indicates Goa is a good estimator. After GoaC method,
$\mathrm{T}_{33}$
is reduced, and the amount is shifted to
$\mathrm{T}_{11}$
. Furthermore, the real part of
$T_{13}$
is set to zero. The ability of the GoaC to reduce NPPs (Negative power pixels) is examined via experiments. Experimental results show that the ability of the GoaC to reduce NPPs is weaker than that of OAC, is identical to EAC, but stronger than PAC.