On the geometry of isotropic arrays

Based on the CRB of the 2D-DOA estimation problem, we prove a condition on the sensor coordinates of a planar array to be ambiguity-free and isotropic. A systematic search of such antenna arrays is conducted leading to the identification of all possible ...

Recently, coprime arrays have been in the focus of research because of their potential in exploiting redundancy in spanning large apertures with fewer elements than suggested by theory. A coprime array consists of two uniform linear subarrays with inter-...

In array processing, mutual coupling between sensors has an adverse effect on the estimation of parameters (e.g., DOA). Sparse arrays, such as nested arrays, coprime arrays, and minimum redundancy arrays (MRAs), have reduced mutual coupling compared to ...