Electro Optic Survivability Integration Laboratory (EOSIL):

Technical Refresh

We supported DSTG with a technical refresh of its turn-key high-precision test and evaluation capability for Threat Warning Systems, reducing the reliance on field testing and support more efficient survivability assessments.


The Defence Science & Technology Group developed the original EOSIL as a Hardware-in-the-Loop (HWIL) environment for experimentation and performance analysis of Threat Warning Systems (TWS).

It allows a TWS to be exposed to realistic scenarios without the expense and complexity of live fire field testing.

With the original EOSIL now 20+ years old, it had limited capability to quantify and control system accuracy and latency, impacting the accuracy of experimentation, high precision evaluation and performance analysis.

One of the key objectives of the EOSIL Technical Refresh was to leverage and integrate new timing synchronisation, signal injection and sensor technologies to significantly improve the fidelity of simulations, and its ability to accurately emulate the operation of sensors in fielded environments.


The Technical Refresh project was undertaken in accordance with Aurizn's Engineering Management System, culminating in the delivery of an integrated turnkey HWIL facility for TWS and platform survivability assessments.

A combination of specific technologies are used in the EOSIL such as light emitting diodes (LED) to generate high-fidelity threat signature profiles, and pan tilt units to apply angular motion to the Sensor Under Test (SUT). Together these emulate relative threat motion with respect to the platform and SUT.

The key outcomes comprised:

  • custom command and control architecture for UV LED signal injectors, motion platform and SUT for turn-key system operation
  • implementation of Precision Time Protocol (PTP) for improved system-wide time synchronisation and characterisation
  • delivery of bespoke sensors employing ultra-violet avalanche photodiode technology for independent signal validation
  • intuitive system operator software for experimentation lifecycle (plan, conduct and analyse).


The new EOSIL provides DSTG with a turn-key high-precision test and evaluation capability for TWS which will reduce the reliance on field testing and support more efficient survivability assessment for current and new threats.

The modular design of the EOSIL, ensures that rapid upgrades and additional capability can be included without the costly re-design of the system architecture.

Case Studies

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We supported DSTG with a technical refresh of its turn-key high-precision test and evaluation capability for Threat Warning Systems to support more efficient survivability assessments.
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