1.2
The location, range and orientation of the Responders in relation to the Sensor have
a significant effect on the tracking performance of the RadaScan View system, and
hence on the quality of the position data sent to the DP system.
The RadaScan View system is based on radar technology. Metallic structures
reflect the microwave beam transmitted by the sensor, and can cause multipath
interference, where ghost images are reported by the system. However, this
unwanted phenomenon can be prevented by carefully positioning the Responders
according to the following guidelines:
Installing Responders
1
8
94-0649-A
Positioning Responders
Responders Should be Mounted:
Responders Should
NOT
be Mounted:
9
With a clear, unobstructed view towards the RadaScan View-equipped
vessel.
9
At a height no lower than two metres below the vessel-mounted Sensor.
9
At a height no higher than five metres above the vessel-mounted Sensor.
9
On outside corners of the rig or platform to minimise the amount of
metallic structure around them.
8
On inside corners.
8
Below an overhang.
8
On lower service decks below a main-deck overhang.
8
Suspended from a lanyard or length of rope.
R
R
9
8
Good
Responder
Location
Poor
Responder
Location
Rig/Platform
Rig/Platform
Vessel
Vessel
Good angle of incidence
Lower angle of elevation allows
vessel to pick up Responder
on approach
Longer range aids
performance in high sea states
Usually clear of obstructions
and away from enclosed
corners
Provides adequate cover
during vessel manoeuvres
9
9
9
9
9
Good Location:
Good angle of incidence
Steep angle of elevation
prevents vessel from picking
up Responder on approach
Shorter range inhibits
performance in high sea states
Often surrounded by
obstructions and radar-
reflecting metalwork
Does not provide adequate
cover during all vessel
manoeuvres
Poor Location:
8
8
8
8
8
Summary of Contents for RadaScan RESPONDERS 3 Series
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