Abstract: One of the main tasks of a wideband reconnaissance receiver is to measure the carrier frequency and direction-of-arrival (DOA) rapidly once the radar signal is intercepted. To address the ...

Abstract: To enhance the output power and beam–wave interaction efficiency of sheet beam (SB) traveling wave tubes (SB-TWTs) operating in the subterahertz frequency range, this study proposes a novel ...

PARIS, Dec 5 (Reuters) - French prosecutors are investigating after drones were suspected to have flown over a nuclear submarine base on the Atlantic coast late on Thursday, a prosecutor in charge of ...

The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. Members of the ...

Middle schoolers sometimes know when their classmate is being unfairly punished. Here’s a story of a former teacher and a parent whose kid is in middle school. When the substitute teacher sent one ...

Edited by Charles T. Campbell, University of Washington, Seattle, WA; received June 11, 2024; accepted November 12, 2024 by Editorial Board Member Peter J. Rossky ...