Scenes

A scene is a square local East-North-Up (ENU) domain around a geographic centre, compiled from open geodata into a native Sionna scene: scene.xml, binary PLY meshes, terrain and surface arrays, and provenance. Every environmental layer sits behind its own switch, so the same location can be compiled with or without buildings, terrain and surface materials.

Building parts, terrain and semantic surfaces share one metric frame with the receiver surface and the radio outputs.

Loading scenes

load_scene, compile_scene, the CLI, and the scene cache.

Loading scenes

Building sources

Overture and OSM worldwide; 3DBAG, Berlin LoD2 and Boston BPDA models by region; plugins.

Building sources

Terrain

USGS 3DEP and Mapzen Skadi bare-earth DEMs, water levelling, three separate resolutions.

Terrain

Surfaces and materials

Ground, vegetation, paved and water classes with documented ITU material proxies.

Surfaces and materials

Coordinates

WGS84 to ENU transforms, AGL heights, array orientation.

Coordinates

Scene layout

Files written for every compiled scene and what each records.

Scene layout