Abstract: Sparse arrays, such as nested arrays and coprime arrays, can achieve a high number of degrees of freedom (DOFs) for direction of arrival (DOA) estimation with a reduced number of antennas.

Prompts the user for a positive integer input (0< n < 100) and validates it. The function will continue to prompt the user until a valid input is received.

Abstract: In this paper, a comprehensive review is carried out of existing sparse arrays for direction-of-arrival (DOA) estimation of non-circular sources. We know that for DOA estimation of ...