Each pair of sites could maybe do two-way time transfer over VHF or UHF meteor scatter. I don't know what the achievable resolution might be; I suppose it would depend on the size of the scattering entity (plasma cloud) and its geometry relative to the two sites. Sparse and unpredictable measurement times shouldn't be a problem so long as they're not too sparse. Even if 30 ns were unachievable single shot, averaging over multiple events would help given reasonable flywheel oscillators (say rubidium).
The common-view UAV or mountaintop ideas would be simpler, though, if they pass muster in other respects. The mountaintop could also be passive if that helps: pairs of antennas connected by a transmission line and appropriately pointed. Cheers, Peter Monta _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
