Shaped beam synthesis of sparse arrays of coupled elements through a modified Orthogonal Matching Pursuit algorithm and multiple dictionaries

Abstract

A method to design sparse arrays based on the Orthogonal Matching Pursuit algorithm and spherical wave expansions is proposed. The Orthogonal Matching Pursuit algorithm is modified in order to take mutual coupling effects into account in the design of sparse arrays. Different Dictionaries are used, going beyond a recently proposed application of the method to array thinning. Further reduction of elements can be achieved at the expense of increasing the computational time in the design process.