As a basic characteristic of radar target in high frequency domain

scattering centers can characterize its elaborate physical structure.Using the weak coupling property between the type and position parameters of a scattering center

the three-dimensional (3D) position parameters were estimated via an ESPRIT method based on the foundation of 3D Coherent Polarimetric GTD (CP-GTD) model.Then the types of scattering centers were estimated on the orthogonality between the signal subspace and noise subspace

while the least square method was used to calculate the coherent polarimetric scattering matrices.Compared to existing estimation methods based on the mono-polarization model

the proposed method provides better estimation performance and stronger noise resistance

and can estimate the coherent scattering matrices of scattering centers directly.Simulation results show its effectiveness and robustness.