National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

Abstract: The electromagnetic environment of modern battlefields is becoming increasingly complex, leading to sever spatial overlap in the feature distribution of radar signal parameters, which in ...

Add Yahoo as a preferred source to see more of our stories on Google. The spring refresh routine involves smaller daily tasks. (Carlos Barquero via Getty Images) Now the days are getting lighter, and ...

Abstract: In electronic countermeasure scenarios such as radar jamming or spectrum congestion, traditional radar emitter signal-sorting methods face significant challenges due to limited prior ...