Raytheon Anschuetz GmbH High Seas Products NSX-30U 用户手册
Synapsis Radar
with Nautoscan NX Pedestal
Operator Manual
Edition Sep 2015
2-143
4265.DOC020102
2.5.2.6
Reference Target ON/OFF
The reference target feature tracks a fixed target (zero speed) and calculates
own ship’s if no other speed sensor is available.
The reference target feature tracks a fixed target (zero speed) and calculates
own ship’s if no other speed sensor is available.
If the fixed target is lost the Radar generates a LOST
REFERENCE TARGET alarm. Own ship’s speed values
cannot be evaluated.
REFERENCE TARGET alarm. Own ship’s speed values
cannot be evaluated.
The Radar can support this by accepting one echo that the user knows is
geostationary. After 2 minutes, the Radar accuracy calculates the ship’s ground
velocity until the track is lost or new echoes chosen.
geostationary. After 2 minutes, the Radar accuracy calculates the ship’s ground
velocity until the track is lost or new echoes chosen.
Accuracy of the calculated ground speed depends on the
selected target and the environmental conditions and may
deviate from the real speed of the target. Please monitor
the value carefully. Collision avoidance data (relative
speed, CPA/TCPA, BCR/BCT) of AIS targets cannot be
calculated with a reference target speed.
selected target and the environmental conditions and may
deviate from the real speed of the target. Please monitor
the value carefully. Collision avoidance data (relative
speed, CPA/TCPA, BCR/BCT) of AIS targets cannot be
calculated with a reference target speed.