Apple’s AirTag is brilliant for keys and bags, but it is a poor fit for some of the most sensitive things people are tempted ...

Apple AirTag batteries are designed to last up to a year under normal conditions, but factors like frequent location pings ...

Abstract: In this letter, we propose dual-mode chirp spread spectrum (DM-CSS) modulation for low-power wide-area networks. DM-CSS is capable of achieving a higher spectral efficiency (SE) relative to ...

Abstract: Spherical measurement is a relatively important application in optical measurement. The interferogram obtained in spherical inspection usually consists of closed fringe patterns. Obtaining ...