VDES Multi-Service Emulator

Analysis of AIS Legacy vs. ASM and VDE (Terrestrial & Satellite)

Telecom Engineering Suite Lead: João Horta

Ship Density (Local footprint)

105003000

SAT Revisit Time (min)

1 min60 min180 min

Channel Interference (Noise)

Clear15%Extreme

Comparable to AIS

9.6 kbps GMSK, SOTDMA. High collision risk in dense ports.

Comparable to AIS

The "AIS 2.0" messaging layer. Pi/4-QPSK. Higher robustness and payload.

Bulk Data

Up to 300+ kbps. Sensitive to SNR and multi-path.

Wide Area

Optimized satellite uplink/downlink. Compensates for Doppler & large footprints.