4-1
4. AIS OPERATION
An AIS transponder can be connected to this radar to overlay AIS objects on the radar
display. The maximum number of AIS objects that can be stored in storage buffer of
this radar is shown in the following table. When this buffer becomes full of AIS objects,
an appropriate alert is generated to alert you to full storage buffer. The storage buffer
contains automatic dead reckoning for AIS targets (class A and B AIS targets and SAR
vessels) and AIS SAR aircrafts, which is based on reported Speed Over the Ground
(SOG), Course Over the Ground (COG), Rate Of Turn (ROT) and heading. The stor-
age buffer also contains calculation of range, bearing, CPA, TCPA, etc.
*: Includes AIS-SART, AIS MOB and EPRIB-AIS.
The following table shows the display capacity for the AIS objects. When the number
of displayed AIS objects reaches the display capacity, an appropriate alert generated.
AIS object type
Processing
capacity
Alert when reaching
95% of processing
capacity
100% of processing
capacity
AIS targets
Class A target
1200
AIS CPTY 95% AIS CPTY FULL
Class B target AIS CPTY 95% AIS CPTY FULL
AIS data report
AIS base station
50
- AIS DATREP FULL
AIS SAR aircraft - AIS DATREP FULL
Physical AIS AtoN - AIS DATREP FULL
Virtual AIS AtoN - AIS DATREP FULL
Mobile AIS AtoN - AIS DATREP FULL
Mobile Virtual AIS AtoN - AIS DATREP FULL
Synthetic AIS AtoN - AIS DATREP FULL
AIS locating device
AIS SART* (active)
20
- AIS SART FULL
AIS SART* (test) - AIS SART FULL
AIS synthetic target
AIS synthetic target 50 - AIS SYN TGT FULL
AIS object type
Display
capacity
Alert when reaching
95% of display
capacity
100% of display
capacity
AIS targets
Class A target
350
AIS DISPLAY 95% AIS DISPLAY FULL
Class B target AIS DISPLAY 95% AIS DISPLAY FULL
AIS data report
AIS base station
50
--
AIS SAR aircraft - -
Physical AIS AtoN - -
Virtual AIS AtoN - -
Mobile AIS AtoN - -
Mobile Virtual AIS AtoN - -
Synthetic AIS AtoN - -
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General
