This VDE Protocol Format may be used by VDE Satellites to inform about updated orbital data for a set of VDE-SAT satellites in a VDE-SAT network or VDE-SAT roaming network. Equipment may use the orbital data to estimate when connectivity to a satellite can be expected.
Orbital data is represented in the two-line element (TLE) format.
IALA
G1117-Ed3.0-VHF-Data-Exchange-System-VDES-Overview