Data Sources

A-102 combines several data sources. Availability and resolution vary by location and access level.

Elevation

• DEM 30 m: detailed terrain elevation where coverage and access are available.
• DEM 250 m: fallback elevation source outside detailed coverage.

Maps and routes

Yandex Maps and local OpenStreetMap-based routing may be used depending on the tool and coverage.

Buildings and land cover

Building footprints and surface classes depend on installed regional datasets. ESA WorldCover attribution is shown where its data is used.

Derived results

LOS, profiles, shadows, insolation and 3D terrain are derived from available elevation and object data. They do not account for every temporary object, vegetation, weather condition or local obstruction.