A handy addition to your toolbox, the best laser tape measure delivers measurements instantly. Our product testing team tried ...

Yunnan Observatory's 1.2m telescope. [Photo provided to chinadaily.com.cn] China has successfully conducted its first satellite laser ranging at Earth-Moon distance, marking a milestone in its ...

In this paper, a novel alignment device that can point the laser at the center of the antenna without affecting the antenna performance is proposed. The results ...

A procedure of tacking small flying object based on a general principle of FMCW and Doppler radar is presented. In order to increase measurement range, this technique uses active signal source on the ...