Digital beam steering with a phased array has previously been demonstrated to improve the Signal/Multipath (S/M) level for precision applications by providing gain in the direction of the GPS satellites. A disadvantage of using horizontal planar antenna arrays is that the beam pattern is symmetric in the Up/Down directions. This means that only the phased array ground plane affects the antenna ...

The properties of the low-energy dipole response are investigated for the proton-rich doubly magic nucleus 48 Ni, in a comparative study of two microscopic models: fully self-consistent Relativistic Random-Phase Approximation(RRPA) based on the novel density-dependent meson-exchange interactions, and Continuum Random-Phase Approximation(CRPA) using Skyrme-type interactions with the continuum pr...

The many-body theory of interacting electrons poses an intrinsically difficult problem that requires simplifying assumptions. For the determination electronic screening properties Coulomb interaction, Random Phase Approximation (RPA) provides such a simplification. Here, we explicitly show this approximation is justified for band structures with sizeable gaps. This when states responsible are e...

From first principles, we calculate the Heisenberg interactions between neighboring dimers in several compounds within Et$_{n}$Me$_{4-n}X$[Pd(dmit)$_2$]$_2$ (Et = ethyl, Me methyl, dmit 2-thioxo-1,3-dithiole-4,5-dithiolate) family using an atomistic approach; with broken-symmetry density functional theory. In all materials, find a scalene triangular model where strongest exchange coupling along...

GPS signals are very susceptible to interference due to weak satellite signal power. Multiple antenna receivers have been considered to be effective tools for interference suppression in GPS. In open loop nulling and localization schemes, we proceed with accurate interference directionof-arrival (DOA) estimates which enable a follow-on effective interference suppression using available spatial ...

We use the constrained random phase approximation (cRPA) method to calculate Hubbard $U$ parameter in four one-dimensional magnetic transition metal atom oxides of composition XO$_2$ (X = Mn, Fe, Co, Ni) on Ir(100). In addition expected screening oxide, i.e., a significant reduction value by presence substrate, we find strong dependence electronic configuration (multiplet) X($d$) orbital. Each ...

The prospects of extracting new physics signals in coherent elastic neutrino–nucleus scattering (CEνNS) processes are limited by the precision with which underlying nuclear structure physics, embedded weak form factor, is known. We present calculations charge and factors CEνNS cross sections on 12C, 16O, 40Ar, 56Fe 208Pb nuclei. obtain proton neutron densities, solving Hartree–Fock (HF) equatio...

We study electronic, charge, and magnetic properties of twisted bilayer graphene with fillings $2\ensuremath{\le}n\ensuremath{\le}6$ per moire unit cell within the recently introduced formulation extended dynamical mean-field theory for two-sublattice systems. use previously obtained hopping parameters between states, described by Wannier functions, centered at lattice spots AB BA stacking, lon...

A new navigational signal designated as L5 with a center frequency of 1176 MHz and a bandwidth of 20 MHz has been introduced as part of GPS Modernization. This new signal is in the Aeronautical Radio Navigation Service Band and will primarily benefit aviation users by allowing precision navigation when used with the existing L1 signal for ionospheric corrections. In addition, U.S. military user...