Abstract: As a kind of wavefront with helical phase, orbital angular momentum (OAM) shows the great potential to enhance the security results of wireless communications due to its unique orthogonality ...
Abstract: Due to the broadcast and open characteristics of wireless channels, near-field physical layer security has attracted much attention to facilitate wireless information security against ...
WASHINGTON — Orbital launch activity set another annual record in 2025, although future growth may depend on factors different from those that fueled the recent surge. There were 324 orbital launch ...
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