Originally Posted by
mmurray
How are the Orion's being used for acoustic searches ?
They are using standard sonobuoys (I believe) with 1,000 ft cable length.
The tactic would probably be to 'lay a line' of a given number of buoys, each of which will transmit to the P3 on a discrete frequency for possibly one hour although other times could be set.
After one hour a second line of buoys could be laid a given spacing from the first, and so on so that a curtain is swept through the search area.
What we don't know is what spacing there will be between buoys.
As the ULB is static then once a sonobuoy is in range it will continuously receive the signal which would then be picked up at some point in the monitoring schedule.
The above is of course only one tactic. It is possible they may lay a field of sonobuoys on the premise that the detection possibility will vary with local changes to salinity and temperature.