Nottingham Forest appoint Vitor Pereira on an 18-month deal as the 57-year-old becomes the club's fourth manager of the campaign.

Abstract: The conventional signal sorting method of airborne warning radar equipment can only sort conventional signals with fixed or combined pulse repetition intervals, such as fixed pulse ...

Abstract: As radar technology advances towards lower detectability, the pulse repetition interval (PRI) of radar signals is evolving from traditional simple patterns to large-scale random jitter forms ...