Swiss Federal Office of Civil Aviation

Drone-based
cable survey
in four photos.

Import four RTK drone photos, and the system automatically extracts EXIF coordinates, converts to Swiss LV95 / LN02, fetches the SwissAlti3D terrain profile, and computes the full cable sag model — ready to export.

1
Upload4 drone photos
2
ExtractEXIF metadata
3
ConvertWGS84 → LV95
4
TerrainSwissAlti3D
5
CalculateCable model
6
VisualizeProfile chart

Everything automated.

From raw drone photos to a validated cable profile — the entire workflow runs server-side, with no manual data entry required.

4-Photo Import

Upload exactly four drone photos — Top-View and Side-View for each measurement point — and let the system do the rest.

Swiss Geodetic Standards

Automatic conversion from WGS84 to LV95 (CH1903+) and ellipsoidal to LN02 orthometric heights via swisstopo Reframe.

SwissAlti3D Terrain

Fetches exactly 200 terrain elevation points between the two measurement stations from the official SwissAlti3D API.

Cable Sag Model

Computes both a linear cable (no sag) and a cubic polynomial sag curve, with maximum AGL height identified automatically.

Export Results

Download the computed profile as a CSV file or export the chart as a high-resolution PNG image.

Ready to measure?

Upload your four drone photos and generate a complete cable profile in under a minute.