Displaying Arpa Target Data; Viewing Arpa Data Of Normal Targets - Furuno FEA-2107-BB Operator's Manual

20.2

Displaying ARPA Target Data

20.2.1

Viewing ARPA data of normal targets

On the ECDIS display, put the cursor on a desired ARPA radar target then push the scrollwheel.
ARPA Radar target on ECDIS screen ARPA target display window
The basic target display dialog for an ARPA radar target consists of the following information:
•
Target's number
•
Bearing (BRG) and distance (RNG) of the target from your ship
•
Speed and Course: SOG and COG when the vector mode is True Vect(G), or STW and CSE when the vector
mode is True Vect(S).
•
CPA and TCPA. Note that if TCPA has a negative value, this means that you have already passed the closest
point and the ARPA target is going away from your ship.
•
Bow Cross Range (BCR) and Bow Cross Time (BCT)
•
Status of target. Status can be Query, Tracking or Lost. "Query" indicates a new target for which there is not yet
enough tracking history to have target speed, course, CPA and TCPA available.
The detailed target display dialog for an ARPA radar target displays the contents of the basic ARPA target display
plus the following information. To display detailed information, push the left mouse button
• Position of target (Lat, Lon)
User can set Closest Point of Approach (CPA), and Time for CPA (TCPA) to define dangerous ARPA targets. CPA
and TCPA limits are common for ECDIS display and danger target log function of ARPA and AIS targets. On the
ECDIS display, a dangerous ARPA target blinks in green and red color alternately.
Note that the CPA and TCPA limits are only for
ECDIS. ARPA radar has its own setting for dangerous
targets and thus a target which is dangerous on the
ARPA display can be safe on ECDIS and vice versa.
If an ARPA target is within the CPA and TCPA
settings, it is shown as a dangerous ARPA target on
the ECDIS display. Log interval defines time period
for logging.
Tracking
20. ARPA Target Functions
Tracking Dangerous
59 ° 53.499'N
024 ° 47.099'E
ARPA target display with detail
True Vect(G) 12 nm
Past PosnTrue 2 min
CPA 10 nm 10 min
20-3