Abstract: Focusing on the performance degradation of parameter estimation at low signal-to-noise ratio (SNR), a new method of direction of arrival (DOA) and polarization parameters estimation was proposed for COLD arrays in this paper. Combining the ROOT-MUSIC algorithm with a modified resampling technique, the proposed method was designed to reduce the computational complexity and improve estimation accuracy. Besides, the parameter feasibility determination method was used to preserve the correct values while removing the outliers after resampling. Results show that, the proposed algorithm can improve the accuracy of DOA and polarization parameter estimation, especially in the case of low signal-to-noise ratios. Computer simulations verify the effectiveness and demonstrate high-accuracy of the proposed DOA estimation algorithm, especially in the case of low SNR.