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Ship EDF-EM Risk Management

Ship EDF is a software framework conceived for the electromagnetic design of naval vessels. It is a comprehensive system capable of supporting concurrent electromagnetic design and assisting the optimization of naval platforms. It is a modular system which can provide coverage for EMC/EMI assessment including antenna placement and radiation hazard identification, as well as radar cross section (RCS) and infrared (IR) signature analysis.

Ship EDF-EM Risk Management Module:

Configuration Control of new naval platforms throughout the whole design process is becoming a key component for reducing the risks of poor ship performance with respect to the requested operational requirements defined at the beginning of the project

Tailored risk files and risk matrices have been introduced in the Ship EDF-EM Risk Management Module in order to manage the complexity of EM risks.

Ship EDF-EM Risk Management Risk MatrixThe risk matrix contains a complete view of a ship’s overall EM risk status resulting from an analysis of all the relevant source and victim pairs from different perspectives such as system performance, mutual interference, radiation hazards and signature levels, with all the relevant impact types. Each cell of the matrix represents an EM risk between a source and victim present onboard and contains a specific link to a tailored EM risk file.

The risk file reports the assessment and evolution of the EM risk derived from the specialized EM analysis. The evaluation of the risks and the related mitigatory solutions can help to define the best choices for compromise, which once recognized, by the design authority and by the end users, will provide a general increase in understanding of a ship’s capability and of the ways to get the best operational performance from it.

Ship EDF-EM Risk Management Risk FileIt is essential to identify significant risks at the earliest stages of a project and to design effective solutions for reducing and controlling their impact as changes are introduced during a ship’s design cycle.

The EM approach to a warship design program saves time and money by risk process management and leads to the following main advantages:

  • Increased ship performance (survivability, mission success, etc.)
  • Preventing failure and damage (equipment breakdowns, overloads, etc.)
  • Assuring ship safety (personnel, ammunition, etc.)
  • Developing ship configuration control (risk matrix, user’s manual, etc.)

EM design aims to control all the risks that can degrade the combat system performance by means of an identification, analysis and reduction process. As an example, a ship design project can contain thousands of EM relationships. An initial analysis, supported by the designer’s experience, can reduce this to a matter of hundreds which might then require further analysis.

These risks represent problems which are unavoidable due to design compromises with other concurrent requirements, which should then be verified by an onboard trial and measurement campaign. Following this, the residual verified risks, whose impact on the combat system performance is still deemed unacceptable, have to be managed as a last resort by operational procedures addressed by the EM designer.


Go to the video section to view film demonstrations of our naval solutions

The EM Risk Management module is directly linked to the ship projects that are present in the database of the ShipEDF-EME module: all the information about the combat system (antennas, susceptible items, technical data sheets and position in the topside) are imported directly into the risk project.

The matrix is auto-completed in terms of sources and victims (both for interference and radiation hazard issues).

Ship EDF-EM Risk Management Automatic Assessment of Potential RiskThe system automatically performs the assessment of potential risk: by knowing the antennas’ locations on the ship and their technical data (power, gain, susceptibility, etc.) the system automatically indicates to the user which analyses to perform by marking the relative risk as potential (both EMI and RADHAZ).




Ship EDF-EM Risk Management Automatic Assessment of Possible Risk VariationThe system automatically performs assessments of possible risk variation between design versions subject to:

  • the variation of combat system placement on the topside
  • the variation of the technical data
  • the insertion of new antennas or susceptible items

The system automatically indicates to the user which analyses have to be performed again, highlighting changes to existing risks and any new potential risks.