Underwater gelocation uses sound waves emitted from known places
- emitters send waves that penetrate water,snow or solids
- these waves carry a synchronised emission time, and their place of emission
- receivers listen to at least three different emitters
- and deduct their own location
- the system works underground as sound waves propagte in solids.
- the system works better in homogeneous soils and short ditances though, enabling for instance mapping of undergroud pipes.
an alternative to existing systems, with no sound emitted by the diver or submarine
Where a device carried by the burried man listens to sound signals emitted by devices installed by a recue team, and brocasts back its geolocation point by UHF.
patents US20240361420A1