Abstract: This paper investigates the signal activity detection problem for spread spectrum signals in low probability of detection communication systems under Gaussian disturbance with unknown ...

NASA's historic Artemis II mission was postponed to March after hydrogen fuel leaks were detected during a fueling rehearsal.

Abstract: In this study, a joint detection threshold optimization and multidimensional resource allocation (JDTO-MRA) scheme based on low probability of intercept is put forward for multitarget ...

Practice projectile motion with fully solved physics problem examples. This video walks through step-by-step solutions to help you understand equations, motion components, and problem-solving ...

U-Va. board leaders resign as Spanberger and Democrats take power These restaurant chains plan to close locations in 2026. See the list. Delta says stay seated so passengers can make connection—watch ...