4-CSPD with unitary transformation of coherency matrix

This investigation presents an alternative methodology for decomposing the fully polarimetric SAR (POLSAR) data based on the amendment of 4-component scattering power decomposition scheme. T₂₃ is the source of 4^th term (helix power) in the 4-CSPD. Using unitary transformations of 3×3 coherency matrix, coherency matrix element T₂₃ was eliminated. Furthermore, 4-CSPD scheme was updated taking account of T₂₃=0 to decompose POLSAR images. This new decomposition methodology shows similar or accurate decomposition results over oriented urban area and agriculture area in comparison to existing 4-CSPD scheme at present.