非均匀阵列构型设计的最新研究进展OA

Array signal processing serves as a fundamental technology in fields such as radar and wireless communications,with Direction Of Arrival(DOA)estimation being a key research focus.Traditional uniform linear arrays face performance bottlenecks due to limited Degrees of Freedom(DoF),significant mutual coupling effects,and physical size constraints.As a breakthrough solution,non-uniform linear arrays optimize the sensor arrangement within a limited physical aperture,achieving enhance the degrees of freedom,suppress the mutual coupling,and improve the power efficiency.This significantly boosts capabilities in signal parameter estimation and beam control.This paper begins by establishing an array signal reception model and systematically elaborates the DOA estimation process,based on which array design principles and core terminology are summarized.Furthermore,it reviews typical design methods for non-uniform arrays and provides an in-depth analysis of their underlying design philosophies.Through simulation experiments,a comparative analysis of the DOA estimation performance of non-uniform arrays under different platform constraints is conducted.Finally,the paper offers prospects on key challenges for non-uniform arrays,such as wideband adaptability,mixed near-field and far-field source localization,and low snapshot estimation,aiming to advance this technology from theoretical innovation to deeper practical applications.