In this issue, amongst a report on the ISPRS Geospatial Week 2019 and a story on high-density array ground probing radar technology, an overview article on the most recent developments in airborne Lidar. Current trends include a steady increase of the measurement rate, achievements in full waveform processing, the spread of multispectral and topo-bathymetric laser scanners, the introduction of single-photon sensitive airborne sensors and the advent of integrated active and passive systems. On top of that, this article highlights how the ongoing miniaturization has recently enabled the application of Lidar on unmanned aerial vehicles (UAV), resulting in ultra-high-resolution 3D point clouds with centimetre precision.

Plus, all the regular news & columns!