5.26 Automatic Identification System (AIS) Reported Targets
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Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.192(79) - Adoption of the Revised Performance Standards for Radar Equipment - (Adopted on 6 December 2004) - Annex - Revised Recommendation on Performance Standards for Radar Equipment - 5 Operational Requirements for the Radar System - 5.26 Automatic Identification System (AIS) Reported Targets

5.26 Automatic Identification System (AIS) Reported Targets

Parent topic: 5 Operational Requirements for the Radar System

5.26.1 General

 Reported targets provided by the AIS may be filtered according to user-defined parameters. Targets may be sleeping, or may be activated. Activated targets are treated in a similar way to radar tracked targets.

5.26.2 AIS Target Capacity

 In addition to the requirements for radar tracking, it should be possible to display and provide full presentation functionality for a minimum number of sleeping and activated AIS targets according to Table 1. There should be an indication when the capacity of processing/display of AIS targets is about to be exceeded.

5.26.3 Filtering of AIS Sleeping Targets

 To reduce display clutter, a means to filter the presentation of sleeping AIS targets should be provided, together with an indication of the filter status. (e.g. by target range, CPA/TCPA or AIS target class A/B, etc.). It should not be possible to remove individual AIS targets from the display.

5.26.4 Activation of AIS Targets

 A means to activate a sleeping AIS target and to deactivate an activated AIS target should be provided. If zones for the automatic activation of AIS targets are provided, they should be the same as for automatic radar target acquisition. In addition, sleeping AIS targets may be automatically activated when meeting user defined parameters (e.g. target range, CPA/TCPA or AIS target class A/B).

5.26.5 AIS Presentation Status

Table 4 The AIS presentation status should be indicated as follows:

Function Cases to be presented Presentation
AIS ON/OFF AIS processing switched ON / graphical presentation switched OFF AIS processing switched ON / graphical presentation switched ON Alphanumeric or graphical
Filtering of sleeping AIS targets Filter status Filter status Alphanumeric or graphical
Activation of Targets   Activation criteria Graphical
CPA/TCPA Alarm Function ON/OFF
Sleeping targets included 		Function ON/OFF
Sleeping targets included 		Alphanumeric or graphical
Lost Target Alarm Function ON/OFF
Lost target filter criteria 		Function ON/OFF
Lost target filter criteria 		Alphanumeric or graphical
Target Association Function ON/OFF
Association criteria
Default target priority 		Function ON/OFF
Association criteria
Default target priority 		Alphanumeric
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