Single photon laser radar enables improved performance and miniaturization of radars
A first realization of a novel pulsed time-of-flight laser radar has been actualized by the CoE Oulu group. What makes the radar unique is that it is based on high speed (FWHM ~100ps) and high energy (~1nJ) optical transmitter pulses produced with a specific laser...
Multiplatform Mobile Laser Scanning (MLS)
Mobile laser scanning is an emerging technology capable of capturing three-dimensional data from surrounding objects. With state-of-the-art sensors, the achieved point clouds capture object details with good accuracy and precision. Many of the applications involve...
Method to retrieve stem volume
In the boreal forest zone and in many forest areas, there exist gaps between the forest crowns. For example, in Finland, more than 30% of the first pulse data of laser scanning reflect directly from the ground without any interaction with the canopy. By increasing the...
CMOS Time-to-Digital Converter
A multichannel time-to-digital converter (TDC) implemented with 0.35-μm complementary metal-oxide-semiconductor technology that uses a low-frequency crystal as reference and measures the time intervals with counter and delay line interpolation techniques is described....