Public transport of Zurich (VBZ): 3D input of catenaries with mobile mapping

Until 2018, Zurich public transports (VBZ) handled their information about contact lines with CAD solutions.
Within the scope of a project about renewal and homogenization of these dataset, the entire network (tram and trolleybus) needed to be re-surveyed in 3D and structured in database model in order to allow a future integration in GIS.

Mobile Mapping on water

Mobile mapping is not necessarily restricted to a terrestrial survey from a car or a train. Sometimes, the view from the water can be very useful, especially when we want a precise cartographic representation of the water’s sides, banks or under a bridge: a place that is simply not accessible from the ground. For this purpose, we can also install our 360° camera on a boat and acquire geo-referenced images directly from the water.