IEC 60872-1:1998 pdf download – Maritime navigation and radiocommunicationequipment and systems – Radar plotting aids -Part 1: Automatic radar plotting aids (ARPA)- Methods of testing and required test results

IEC 60872-1:1998 pdf download – Maritime navigation and radiocommunicationequipment and systems – Radar plotting aids -Part 1: Automatic radar plotting aids (ARPA)- Methods of testing and required test results.
IEC 60872-1 specifies the minimum operational and performance requirements, methods 01 testing and test results for equipment that complies with performance standards not inferior to those adopted by the International Maritime Organization (IMO) in Resolution A.823 In addibon. this standard takes account of IMO Resolution A.694 and is associated with
IEC 60945,
When a requirement in this standard is different from IEC 60945, the requirement in this standard shall take precedence.
All texts of this standard. In which the wording is identical to that in IMO Resolution A.823. are printed in italics and the resolution and paragraph numbers are indicated in brackets
2 Normative references
The following normative documents contain provisions which, through relerence in this text. constitute provisions of this part of IEC 60872. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 60872 are encouraged to Investigate the possIbility 01 applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards
IEC 60872-2.— Marrtime navigation and radiocommunica lion equipment and systems – Radar plotting aids — Part 2: Automatic tracking aiiis (A TA) — Methods of testing and required test results I)
IEC 60872-3, — Maritime navigation and radiocominunication equipment and systems — Radar plotting aids — Part 3: Electronic plotting aids (EPA) — Methods of testing and required lest results 1
IEC 60936-1, — Maritime navigation and radiocommunication equipment and systems — Radar
— Part 1: Shipborne radar — Methods of testing and required test results 1)
IEC 60936-2, — Maritime navigation and radiocommunication equipment and systems — Radar
— Part 2: Shipborne radar for high speed craft (HSC) — Methods of testing and required test results f
IEC 60945:1996, Maritime navigation and radiocommunicat,on equipment and systems — General requirements, methods of testing and required test results
3 3.2 (A.823/A.3.2) Acquisition
3.3.2.1 (A.823/A.3.2.1) Target acquisition may be manual or automatic for relative speeds up to 100 knots. However there shall always be a facility to provide for manual acquisition with the relevant symbol (see symbol 1 of annex E) and cancellation: ARPAs with automatic acquisition shall have a facility to suppress acquisition in certain areas. On any range scale where acquisition is suppressed over a certain area, the area of acquisition shall be defined and indicated on the display with the relevant symbol (see symbol 2 of annex E).
3.3.2.2 (A.823/A.3.2.2) Automatic or manual acquisition shall have a performance not inferior to that which could be obtained by the user of the radar display.
3.3.3 (A.8231A.3.3) Tracking
3.3.3.1 (A.823/A.3.3.1) The ARPA shall be able to automatically track, process, simultaneously display and continuously update the information on at least 20 targets, whether automatically or manually acquired. A target being acquired and tracked during the initial stage shall be shown by a symbol (see symbol 3 of annex E) within 3 s. Targets being tracked when tracking is in steady state shall be shown by symbols 4A or 4B and 5 of annex E within 20 scans.
3.3.3.2 (A.823/A.3.3.2) If automatic acquisition is provided, description of the criteria of selection of targets for tracking shall be provided to the user. If the ARPA does not track all targets visible on the display, targets which are being tracked shall be clearly indicated with the relevant symbol (see symbols 4A, 4B, or 14 of annex E) on the display. The reliability of tracking shall not be less than that obtainable using manual recordings of successive target positions obtained from the radar display.
3.3.3.3 In order to reduce the complexity of vectors and graphics, a facility for the input of operator interest limits may be provided. If targets are being tracked, which do not require vectors or graphics, because they are outside the operator interest limits (e.g. range. CPA, TCPA), they shall be clearly indicated with the relevant symbol (see symbol 14 of annex E). The operating manual shall contain an explanation of the operator interest limits.