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GRIVINI LABS

NTN Lab v4.0.3 · Orbit Visualization
UE-centric multi-satellite mobility simulator

UE ground position

Latitude (°)

Longitude (°)

Altitude (m)

Nearest city: —

Simulation

Minimum Elevation (°)

Carrier frequency (GHz)

Duration (minutes)

Analysis step (seconds)

Propagation model: two-body Keplerian. Serving rule: highest elevation above threshold.

Satellites

Enter SIB19 satellite-state values, convert them to engineering units, and review the resulting geometry. The visualization updates automatically.

Display

The UE remains fixed near Cupertino, California. Only the two raw SIB19 PositionVelocity-r17 data sets are replaced.

Show UE links

Show orbit paths when available

Show sub-satellite ground points

Show Earth-rotating ground track

Show future trajectory

Show 60-second time markers

Show direction arrow

Orbit opacity (flicker-free during playback)

Show orbital-element guide (converter)

Keep current camera position after Calculate

Service summary

Run “Analyze service window”.

Press “Calculate and plot”.

Mobility events

—Run service analysis.

3GPP interpretation

Raw PositionVelocity-r17 values use 1.3 m per position step and 0.06 m/s per velocity step. Raw Orbital-r17 values use the Release 17 scaling defined in TS 38.331. Position/velocity is interpreted in ECEF at epoch. Orbital parameters are interpreted in ECI, with the axes coincident at epochTime. Displayed delay is geometric satellite-to-UE propagation delay.

Nearby satellites — UE view

Waiting for simulation…

Serving satellite

Neighbor satellite

Loading 3D Earth…

T+00:00:00

Nearby satellites — UE view

Orbital Elements View