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AQS903 Microprocessor Card (MPC) Mk IV

Technical Information

Catalogue No: C0963
Category: Surveillance/Acoustics
Object Type: Module/Sub-Assembly/Component
Object Name: AQS903 Microprocessor Card (MPC) Mk IV
Part No: 6743-00849
Serial No: 06
Manufacturer: GEC-Marconi Avionics
Division: Displays
Platform(s): Merlin AW101 (EH101) 
Year of Manufacture: Unknown
Width (mm):
Height (mm):
Depth (mm):
Weight (g):
Location: Main Object Store

Pt. No. 6743-00849
DL Iss I
Ser. No. 06
Mod Record -
HSK 40-4029


It had become clear that only a redesigned acoustics system would enable the Sea King replacement (now called WG34) to meet the Royal Navy's full operational requirements.

The main problem was to pack all of the sophisticated processing into a small and lightweight enough package for this new helicopter. The resultant system was the AQS-903 a powerful lightweight acoustic processor for helicopter and fixed-wing applications. This system can process data from eight to 32 sonobuoys in any combination. This flexibility is derived from the design based around a number of processing 'pipelines', each able to handle a certain quantity of passive and/or active sonobuoys. Four of these pipelines provide a processing power eight times that of the earlier generation AQS-901, at a fraction of the size and weight.

AQS-903/903A series make extensive use of distributed processing, with the systems incorporating the latest component technology to provide the operator with a wealth of information. The system provides a wide range of processing options to enable the operator to smoothly progress from initial contact detection to classification, localisation and tracking to achieve an effective mission. Analysis and display cues are in plain language, requiring a minimum of operator training. The system can process data from LOFAR, DIFAR, HIDAR, Barra, DICASS and CAMBS buoys.

The given dimensions are for the clear plastic presentation case which contains this card. The case has a a label on its that reads:

"GEC-Marconi Avionics
Displays Division - Mission Systems Group
AQS 903 Microprocessor Card Mk IV
This Hardware is non functional and under no circumstances is to be removed without authorisation of the Marketing Department.
(Card on loan from MSG QA Quarantine Store)
(For further details contact Mr J Anderson Ext 3378)"

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