Abstract: This correspondence provides expressions for the Cramer-Rao lower bounds for the estimates of azimuth and elevation made with an arbitrary three-dimensional array of sensors. These results ...

The ATA is currently being upgraded with more sensitive receivers. While it is not the world’s largest antenna array, it has the advantage of being able to examine large swaths of the sky, and over a ...

Abstract: In this paper, a multifunctional scattering antenna array has been proposed to generate orbital angular momentum (OAM) vortex scattering wave and meanwhile reduce antenna radar cross section ...