GEC Avionics

On this page: Basics | Engineering Tasks | Support Environment

Goto top of this pageBasics

Employer GEC Avionics Ltd., Radlett
Dates August 1986 - February 1987
Business area AEW RADAR for the Mk.3 Nimrod aircraft
Position Graduate Engineer

Goto top of this pageEngineering Tasks

Digital design Design of several digital processing boards for the Mk.2 Adaptive Threshold Unit for the Nimrod Mk.3 AEW RADAR
Unix system administration Assist in the setting up and administration of the 68020-Unix computer system

Go up this page to 'Engineering Tasks'Digital design

Project Nimrod Mk.3 AEW RADAR
Sphere of Work Military system
Responsibilities Assist in defining the architecture of the Mk.2 ATU.

Design of several digital boards for the Mk.2 Adaptive Threshold Unit

Notes Though not involved in the algorithm design, the process was followed closely and understood.

To ensure compatibility with the existing hardware, substantial system-level testing was undertaken to confirm the documented unit interfaces.

Hardware Skills Digital
  • pipelined task-specific DSP design, arithmetic circuits, RAMs, PROMs, etc.
  • standard logic, early PALs.
DSP Skills Understanding of RADAR noise processing, threshold generation, and associated functions. Implementation in algorithm-specific hardware.
Software Skills Complex Unix shell scripts written to perform tasks like backplane netlist generation from board pinout tables in the absence of specialist software to perform that task.
Debug/Test Skills System level testing.
  • Analogue oscilloscopes; logic circuit and interface characterisation
  • Logic analysers for digital circuit cuaracterisation

Go up this page to 'Engineering Tasks'Unix system administration

Provided the knowledge and experience necessary to set up and administer a Unix system.

The system was purchased as a general computing resource for the Signal Processing Group, on a basis of one terminal on each desk. Unfortunately it did not come with the knowledge to set it up included in the box.

Goto top of this pageSupport Environment

Desktop Computer Systems
  • (68020 VME box)-Unix
Desktop Software - General
  • standard Unix utilities only
Lab/Specialist Computer Systems
  • Daisy-Dnix
Lab/Specialist Software
  • Daisy ECAD

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Curriculum Vitae > Career ... > GEC Avionics / John Dubery / 8 April 2000