TeraRanger Tower is a competitor to the traditional Lidar. The big difference is that the TeraRanger Tower doesn’t have any moveable components which makes it completely silent.
Another advantage is that there’s no need to worry about a contact with eyes. TeraRanger is able to register an obstacle 14 meters away and the accuracy is 4 cm. Mainly it’s useful for drones and other autonomous vehicles. The proportions are 150 x 45 mm and it weighs 130 grams.