Many people who don’t believe one conspiracy theory about that station—known as the High-frequency Active Auroral Research Program, or HAARP—believe another. A common misconception is that it can ...
Abstract: Estimation of the direction-of-arrival (DOA) in large array systems owns wide prospect in radar applications. However, the traditional subspace DOA estimation algorithm has deteriorated ...
Abstract: Vortex electromagnetic waves carrying orbital angular momentum have been widely studied in many fields because of their unique helical phase structure. The vortex electromagnetic waves can ...
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