Aerial survey for Germany’s digital twin reaches halfway mark

The aerial survey for the Digital Twin Germany is now 50% complete, marking a key milestone for the Federal Agency for Cartography and Geodesy (BKG) and one of Germany’s most ambitious geospatial projects. Having started in August 2022, the goal of the project is to have full nationwide coverage by December 2026. Remaining flights are already planned, but success still depends on one unpredictable factor: clear skies.

The digital twin of Germany will form the backbone for simulations in areas such as environmental protection, public safety, transportation planning and urban development. At its core, the digital twin is built on an ultra-detailed 3D model generated through advanced airborne laser scanning. This technology makes it possible to capture objects across the landscape with exceptional point density. The aim for this project is a dataset with a minimum of 40 measurement points per square metre nationwide. Particularly in flood prevention, these detailed geoinformation layers can play a vital role in protecting lives and infrastructure.

Virtual representation of Germany

The Digital Twin Germany will be an intelligent, spatially accurate virtual representation of the country, containing detailed geospatial objects from high-rise buildings to traffic lights and tree cover. Its design draws inspiration from the concept of digital twins in Industry 4.0, where processes and developments can be tested virtually before being implemented in the real world.

Once operational, the 3D model will be updated every three years, providing not only a continuously refreshed basis of data, but also valuable insights into long-term trends such as changes in forest cover, land use or topography.

The potential applications are wide-ranging. Policymakers and administrators could use the platform to assess which valleys are most at risk during extreme rainfall, identify areas where heatwaves may endanger residents, or evaluate suitable sites for renewable energy expansion. It could also support disaster management by modelling evacuation routes in flood or wildfire scenarios, or analyse hospital accessibility to promote equal living conditions.

Smarter decisions

By uniting various analytical and simulation tools from different disciplines under one digital roof, the Digital Twin Germany aims to foster cross-sector collaboration and eliminate costly data duplication across federal agencies. The integration of AI, cloud computing and big data technologies will make it possible to tackle complex scenarios efficiently, without each authority having to develop its own specialized infrastructure. When completed, the Digital Twin Germany will not only make decision-making more sustainable and transparent but will also provide an immersive, 3D view of how policies and projects could shape the future.

In 2022, at the beginning stage of this gigantic project, Anja Hopfstock, Michael Hovenbitzer, Florian Lindl and Patrick Knöfel contributed an article in GIM International on how, at the forefront of applying the newest Lidar advances, BKG is playing a crucial role in supporting Germany on its path to become a smart country aimed at making better decisions faster. Read the article here.