DOD and DOA Estimation for Bistatic Co-Prime MIMO Array Based on Correlation Matrix Augmentation

This paper mainly deals with the problem of joint DOD and DOA estimation for bistatic co-prime array by forming two augmented correlation matrices. Firstly, according to the difference co-array of co-prime transmitting array, an augmented transmitting correlation matrix is constructed to serve for DOD estimation by one-dimension MUSIC. Afterward, a two-step augmentation method based on transmitting and receiving difference co-arrays is proposed to generate an augmented transmitting/receiving (T/R) correlation matrix which is utilized to calculate the paired DOAs by one-dimension MUSIC with the estimated DODs. Numerical simulations demonstrate the effectiveness of the proposed algorithm.