DOA ESTIMATION BASED ON DIELECTRIC DOME ARRAY
基于介质顶阵的到达角估计

The performance of DOA estimation will be distorted in the presence of dielectric dome in the Dielectric Dome Array(DDA) because the dielectric dome diverges the planar wave-front into non-planar wavefront inside it. This paper proposes a Far Field Approximation(FFA) method to improve the performance based on DDA. This method first reconstructs a FFA Co-variance matrix, which is Toplitz and approximates to the far field data covariance matrix, and then the high-resolution eigenstructure techniques can be utilized to estimate the DOAs without revising the planar wavefont assumption. Simulation results confirm the theoretical work.