<b>Off-grid hydroacoustic signal orientation estimation based on interpolation and subspace fitting in coprime arrays</b>.zip

This letter presents a novel approach to sparse Bayesian underwater acoustic signal direction estimation. The proposed method incorporates interpolation of the coprime array and signal subspace fitting, addressing the limitations of the hydrophone coprime array in utilizing all array elements' information and the interference of the ocean noise in shallow waters, which impairs the accuracy and resolution of target direction estimation.