Abstract
Sparse array designs use fewer sensors to span an aperture, thus reducing hardware and maintenance costs.
While sparse array design techniques exist, they have received less attention than comparable techniques for
uniformly spaced arrays. Vaidyanathan and Pal describe two types of sparse arrays that use interleaved subarrays with uniform spacing, permitting the designer to apply well-known techniques to control sidelobe levels.
Nested Arrays (NAs) consist of a relatively short subarray with half-wavelength spacing and a longer subarray
with larger spacing [IEEE Trans. Signal Process., 2010].