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 Navigation
underwater is a very difficult task. To calculate the position
after some time submerged, the diver needs to know the speed and
direction of the currents as well as the velocity achieved through
the water.
H Scientific have developed and tested Phantom - a Diver Navigational
Unit. This unit comprises a suite of sensors to measure:
- Water currents,
- Depth below the surface,
- Altitude above the seabed,
- Attitude (roll and pitch) and heading,
- Speed through water,
- Position (when surfaced).
The on-board computer combines the data from the sensors to give
a graphical and numerical display of the diver's position and
progress through a pre-programmed mission, using electronic charts.
The sensor data can be logged to a data file and the mission progress
can be recorded and replayed later for de-briefing purposes. The
navigation unit can be used to control the propulsors, allowing
autopilot control of the vehicle.
The unit is supplied fitted to a custom built pressure housing,
with marinized cables and instrumentation.
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