This article contains spoilers for the film Disclosure Day. As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters of the Third ...

Hackers breached Brazil’s national emergency alert system overnight on June 19 and 20, sending fake notifications to residents across at least seven cities, with some alerts warning of an imminent ...

Abstract: Pattern synthesis for large-scale spherical array antennas (SAA) has traditionally been computationally intensive. To enable flexible beam pattern control in SAAs, a real-time pattern ...

Abstract: Three characteristics of radar antennas are their effective aperture, power gain, and directional gain. Although the equation of radar usually uses power gain, directional gain, or just ...