Millimeter wave radar can measure distances, directions, and Doppler velocity for objects in harsh conditions such as fog. The 4D imaging radar with both vertical and horizontal data resembling an ...

4D WritePro interface offers a set of palettes, which allow end users to easily customize a 4D Write Pro document.

An invisible force has long eluded detection within the halls of the world’s most famous particle accelerator—until now.

For the current development of green civil aviation, this study aims to optimize the green four-dimensional (4D) trajectory of commercial flight by taking into account conventional cost and ...