Abstract: The electronically steered phased array (ESPA), which is composed of periodic antenna elements, usually uses subarrays with large spacing to lower system complexity and cost. This kind of ...

Abstract: This article proposes a three-dimensional grating lobe suppression method used in the sparse antenna arrays for unmanned aerial vehicle (UAV) swarms to address the problem of grating lobes.

Purpose: To compare the refractive prediction error of Hill-radial basis function 3.0 with those of 3 conventional formulas and 11 combination methods in eyes with ...