It is an old trope in submarine movies. A sonar operator strains to hear things in the ocean but dares not “ping” for fear of ...

Abstract: For synthesizing ultrawideband (UWB) beam-scanning aperiodic antenna arrays under mutual coupling (MC) effects, the novel constraint-reduced iterative convex optimization (CRICO) method with ...

Abstract: Currently, the trend of group use of unmanned aerial vehicles (UAVs) is actively developing. This allows to significantly increase their efficiency due to coverage of larger areas, ...

MOSCOW, March 23 (Reuters) – An unmanned Russian cargo spacecraft has a problem with an antenna so it will have to be manually ‌docked when it reaches the International Space Station (ISS), Russia’s ...