Last Update January 9, 2019


  • C4I, Communication Systems
  • Training & Simulation

Interoperability Systems International Hellas S.A. (ISI Hellas), was established in 1993 and organized to provide efficient and cost effective analysis, definition, design, development, integration, testing and installation of real-time Tactical Command, Control and Communication Systems, Data Link Systems, and Simulator/Trainers.

Since its founding the company has been engaged exclusively in the defence sector and provides high quality systems to both the domestic and international markets, having a broad range of experience in US and NATO Standard Data Links, Non-NATO Data Links and Interoperability Solutions.

ISI Hellas is a Greek registered and incorporated Company, a member of the Hellenic Manufacturers of Defence Material Association, a member of AFCEA and a participant to the NATO TDLITS Syndicate.

With a competitive advantage based on its expertise, its quality procedures and the knowledge of its work force, ISI Hellas offers cost effective solutions for:

  • Customized Interoperable System Solutions.
  • Adaptable Off-the-Shelf Software Applications.
  • Standard Tactical Data Links, including Link 1, Link 11/11B, ATDL-1, Link 16, Link 22, JREAP, IJMS.
  • Custom and Country-specific Data Links.
  • Mission Integration & Management System for Maritime Patrol Aircraft applications.
  • Universal Link System (ULS).
  • Multi-Tactical Data Link Planning System (MTPS).
  • Data Link Design Tools and Monitoring.
  • Universal Test and Training System (UTTS).
  • Tactical Data Link Simulators and Trainers.
  • Radar Video Simulator (RVSM).
  • Fire finder Classroom Trainer (FCT) for the AN/TPQ 36/37.
  • Radar Data Analysis from Satellites including Imaging for Maritime Surveillance.
  • Data Links and Data Networking between Ground and Space Segments.
  • Integration and Test Capabilities at all System Levels.
  • Consultancy for the Specification of Tactical Command and Control Systems.

The Hellenic Ministry of Defence has inspected the company’s facilities and certified them and its personnel to the “National Secret” and “NATO Secret” levels. A specially constructed vault has been added and fixed with additional security devices to accommodate the storage of classified material.

ISI Hellas develops and integrates system hardware and software in accordance with strict internal development and configuration control procedures that conform to a moderately adapted version of MIL-STD-498. All system software has been developed using either the Ada or C++ high-level compiler language.

The Company's Development Process and Quality Assurance Program has been certified as compliant with ISO 9001:2015 and its security policies and practices as compliant with ISO:27001 and NIST SP 800-171.

ISI Hellas has Representatives and Industry Partners worldwide.

The Company is the partner of choice for a number of multinational organizations such as:

  • Lockheed Martin,
  • Raytheon,
  • Northrop Grumman,
  • ThalesRaytheon,
  • Raytheon Australia,
  • Rheinmentall,
  • SAAB Microwave Systems,
  • US Navy-SPAWAR, etc.

The growth and success of ISI Hellas depended to a large extent on the quality of its human resources. The majority of the staff, are degreed Engineers in the disciplines of Systems, Software, Hardware, Integration and Testing with over 60% hold Post-Graduate Degrees at the Masters and Doctoral Level.

With the rapid advances in communications technology and the increasing requirements of Network-Centric Warfare, ISI Hellas is committed to meeting the challenge of providing the systems and software for NATO and other allied forces to train, fight and succeed in their missions.

Company's Premises

The Company is located in the Athens suburb of Argyroupoli, and operates out of 1500 square meter facility of which 1100 square meters are utilized for office space and the remaining 400 square meters for the production, laboratory and secure storage areas.

ISI Hellas S.A. - Pictures

Contact info #1

Dimitris Karantzavelos
Chief Executive Officer
Kritis & 12 Gravias Street, GR164 51, Argyroupoli, Athens, Greece

Contact info #2

David Tham
Chief Technical Officer
Kritis & 12 Gravias Street, GR164 51, Argyroupoli, Athens, Greece

Contact info #3

Nikos Ghikas
Business Development & Marketing Director
Kritis & 12 Gravias Street, GR164 51, Argyroupoli, Athens, Greece

Contact info #4

Tony Anastasiou
Program Management Director
Kritis & 12 Gravias Street, GR164 51, Argyroupoli, Athens, Greece

Contact info #5

Anastasia Vilara
Legal Counsel
Kritis & 12 Gravias Street, GR164 51, Argyroupoli, Athens, Greece


ISI Hellas considers customer care to be an essential factor for the successful implementation and operational use of our systems by our defense customers. It is therefore our goal to understand our customers' technical and operational requirements and effectively integrate them resulting in the provision of turn key solutions.

That effort would include such services as system engineering, customer/user training, maintenance and after sales-support. These services allow our Greek and international customers to fully utilize our systems in the most cost effective way throughout their life-cycle.

System Engineering and Design

The Company's team of experts offers a complete set of Engineering services, including System Architecture and System Design. By investigating and documenting our customers' existing processes and technologies we are designing the development of the new systems at the lowest possible cost, from feasibility through production.

Integration, Test and Evaluation

The Integration and Test Department of ISI Hellas is staffed with engineers skilled in the art of extracting system requirements and creating the test procedures to validate them. The Company has excellent Integration, Test and Evaluation capabilities, at all system levels. These capabilities are provided both internally and as external services. Areas covered include but are not limited to:

  • Hardware and Software Integration Tests.
  • Factory Acceptance Tests.
  • On-Site Acceptance Tests.
  • Sea Acceptance Tests.
  • Flight Tests Acceptance Tests.
  • System Performance Evaluation.

Customer/User Training

Our team of highly qualified and experienced trainers offers a variety of courses on our delivered systems, ensuring that our customers and the system operators apply their newly acquired technology, knowledge and skills efficiently and understand the benefits of applying this know-how in their every day operations. We also offer training on the Standard Data Links, with regard to employment, operation, message sets and network topology.

ISI Hellas achieves this by offering comprehensive training courses and material for the respective systems. Courses include theory, practical exercises and maximize the interaction between the trainer and the trainees.


ISI Hellas's technical support infrastructure is fully equipped, assuring the proper and uninterrupted operation of all our systems. Throughout the systems' guarantee and life-cycle periods, ISI Hellas offers the following services.

  • Corrective Maintenance.
  • Preventive Maintenance.
  • Help Desk.
  • Modifications and Redesign.
  • Repairing and Spare parts Management.

After Sales Support

ISI Hellas's team of expert engineers and technicians are fully committed to quality, technology awareness and domain knowledge and keep abreast of the latest technological developments. Utilizing the feedback received from our customers we are able to offer solutions for the improvement of our delivered systems and the expansion of the systems' operational use, thus helping the customer realize the greatest return on investment.


As a result of its significant system development experience and R&D programs, ISI Hellas is able to provide, off the self, a set of standard data link and simulation related products. These can be provided and configured as stand-alone software applications, single or multiple data link applications on a card, or complete integrated systems with tactical displays suitable for land, sea or airborne platforms.

These include:

 Standard Data Links: such as, Link 1, Link 11A, Link 11B, Link 16, Link 22, JREAP, IJMS and ATDL-1.
• Universal Link System (ULS): a sophisticated multi-link gateway that can provide simultaneous participation on Link 16, Link 22, JREAP, IJMS, Link 11, Link 11B, ATDL1, and Link 1 with the capability to be expanded to incorporate VMF. When multiple links are active, forwarding is performed between the links.  The ULS accommodates sensor inputs and includes optional Tactical Display Workstations and C2 functionality (Correlation, Track/IFF & Weapon management, etc).  The ULS provides the capability to distribute a common Recognized Tactical Picture to combat assets that are capable of operating on any of the above data links. The System is capable of supporting multiple consoles for C3I functions and can be configured to accept multiple sensor inputs such as ESM and Radar. The ULS can be configured in static or mobile (transportable) configurations with either ground benign or ruggedized hardware.• NARS System which is a sophisticated Air Defense Command and Control System that includes the ARS capability and the incorporation – through the system – of all the Air Force major assets and Air Defence Systems into a Unified Air Defence Force. The System automates the following operational procedures and capabilities:

Air Defence C2 Operations Center
- Integrates and fuses Radars & Tactical Data Links Input from Air, Ground, and Maritime sources
- Generates & disseminates a Common Operational Picture 

Real Time Battle Management System
- Performs assets and weapons trials to determine the best tactical solution
- Performs Air and SAM mission assignment
- Controls and coordinates all offensive, defensive & support missions within the allocated area

Air Control Operations Center
- Airspace management
- Conflict prediction
- Flight monitoring
• Mission Integration & Management System (MIMS): which is an integrated mission/combat system for all types of Maritime Patrol Aircraft (MPA) aircraft and applications, that has been designed and developed in its entirety by ISI Hellas. MIMS is an open architecture system that interfaces with any combination of sensors (Radar, EO/IR, EW/ELINT, ASW/ACINT, MAD, AIS etc.), with tactical data links (Link 11, Link 16, Link 22 or any other NATO or National Data Link desired by the customer), with the aircraft’s weapon systems and its tactical subsystems (INS/GPS, FMS etc.). The system manages the data from all the various sensors and subsystems, performs data fusion and creates the Common Operational Picture which is presented to the Tactical Coordinator (TACCO), providing him with the capability to perform his surveillance, identification and command & control tasks. 

  • Universal Test and Training System (UTTS):  a scaleable, comprehensive, time synchronized, simulation scenario based trainer for the operators of one or more Tactical Data Systems (TDS). The UTTS provides the capability to test a TDS through stimulation of any or all of that TDS’s external interfaces in a scenario driven interactive environment.  The UTTS testing capability provides “negative test” features that allow insertion of incorrect data or protocols to ensure that the system under test handles them correctly. Scenarios are normally generated prior to the testing/training session.  The Scenarios are executed during the testing/training session and can be adapted using on-line scenario modification features.  The on-line-modified scenario can be saved as a new scenario. Off-line support functions such as data reduction and performance evaluation are provided. The UTTS can operate within a network of TDS simulators for multi-site testing/training using the DIS or HLA protocols.
  • Multiple Tactical Data Link Planning System (MTPS): that implements an advanced Joint and Coalition Planning Capability (JCPC). The system is capable of planning single link and multi-link architectures for any or all of the common data links (including Link 16, Link 22 and VMF) in use by Coalition Forces today and automatically generates the OPTASKLINK by consolidating the inputs from various network plans.
  • Network Design Tool (NDT) that assists the Designer of Link 16 Networks to create/maintain a Library of Network Designs and generate validated NETMAN T/1 initialization files. The NDT application helps the designer enter the required information in an efficient, user-friendly manner while validating all the parameters for consistency according to Link 16 JTIDS/MIDS terminal specifications. The tool generates (exports) the validated design to a NETMAN T/1 file according to the International Network Design Exchange (INDE) Format. The NETMAN T/1 format allows for distribution and exchange of network designs with other Network Design Facilities, Network Management Agencies and MIDS capable Platforms. The NDT is a configurable, stand-alone, light-weight application running on multiple platforms (Windows, Linux).
  • High Frequency Implementation Solution (HFIS): special equipment that allows a unit to operate in a Link 11 network with non-co-located receiver and transmitter and a single Data Terminal Set (split-site) as either Net Control Station or a Participating Unit.
  • Simulators and Trainers: for all of the standard NATO Data Links.
  • Radar Video Simulator (RVSM): that provides realistic tracks and plots, in digital or PPI video, based on scripted digital simulation data.


ISI Hellas’ continuing accumulation of operational and technical expertise provides the basis for evolutionary development of cost-effective and innovative products. Over the years the Company has built a solid reputation for quality products and services in the following areas:

  • Simulators/Trainers for Tactical Mission Systems and Radars.
  • Embedded Tactical Trainers – for Naval ships’ Combat Information Center (CIC).
  • Mechanical Design of Ergonomic Tactical Consoles.
  • Integration of Commercial and Tactical Equipment.
  • Specification and Design of Custom Data Links.
  • Development of Real-time Embedded Software Applications.
  • Specialized Training in Operations and Maintenance of Tactical Systems.


Since its creation, ISI Hellas has developed and delivered the following systems for land, air and naval military applications. These systems are based on COTS (commercial-off-the-shelf) elements ruled by highly demanding military, industrial and environmental standards. Software development process is in accordance to DOD MIL STD 498 Guides and Software is written mainly in ADA and C/C++.

For the Navy of Singapore:
• A real-time Central Tactical System for their Maritime Patrol Aircraft. As the Mission System Integrator, ISI Hellas delivered four real time Tactical Command and Control (C2) systems for that Navy’s Maritime Patrol Aircraft (MPA) of the Southeast Asian Nation plus development and support facilities.  Operational since 1995, the CTaS integrates both Link 11 and a country specific data link, performing forwarding, data fusion and correlation for those links, and all on-board sensors and weapons systems.  The CTaS delivery included a simulation-based system development capability and debriefing facility that replays recorded mission information.
• A real-time Simulator/Trainer for the Mission Systems of the Maritime Patrol Aircraft, which features:
o Accurate replication of all Mission Systems (Command and Control, ESM, Radar, IRDS, Data Links, Weapons, etc.).
o Emulation of the MPA radar that includes various models of detection that take into consideration the effects of terrain and environmental conditions.
o Realistic scenario generation using defined platforms (Air, Surface, Sub-Surface, etc.), with the inclusion of different data links, sensors, weapons, maneuver paths, desired threats, weather and environmental conditions, engagements, etc.
• A Mission De-briefing System used to replay any or all of the events recorded during an MPA mission.
• An Embedded Tactical Trainer installed in the Combat Information Center of a Naval vessel. This trainer enables the Combat Crew to train at their actual operator consoles and to face any scenario, threat, environment, or location that is created by the instructor.  The system features emulation of the ship’s radars using PPI presentation technology.

For Bahrain:
• A Data Link buffer/translator that connects their National Air Defence Network to a Regional Air Defence Network.

For South Korea:
• 55 Data Link processors providing processing and forwarding between Link 11A and Link 11B, thus enabling the Navy to integrate their Ship Systems with shore-based Command Systems and Centers.
• A custom designed high bandwidth data link to interconnect command posts, higher echelon and firing batteries of a medium range Surface to Air missile system.
• Development of Tactical Data Link 22 Processor.

For the US NAVY SPAWAR Organization:
• Transportable Data Link (ULS) System with C2 functions to be used as a ground support equipment of Maritime Patrol Aircraft(s).

For the Australian Army:
• A Classroom Based Trainer that simulates the AN/TPQ 36 radar’s capabilities and functions as subcontractor to Raytheon Australia for the Life of Type Extension Project of the AN/TPQ 36 Weapon Locating Radar.
• A Laptop based Deployable Training Capability for the AN/TPQ 36 Weapon Locating Radar.

For a Canadian Company:
• A Radar/IFF Simulator, whose scope is to provide an environment for the generation of simulated Radar and IFF signals in order to support the testing of a radar system.

For the Indian Company BHARAT ELECTRONICS:
• A Radar Video Simulator Module (RVSM) that provides the means to simulate the visual and data link performance of rotating antenna radars.

For the Hellenic Armed Forces:
• A ground entry station that provided two-way connectivity between the ERIEYE Airborne Early Warning and Control (AEW&C) and the Hellenic Air Force’s existing Air Defence Command Centers during the early testing of the ERIEYE.
• A Mission Training System for the Mission Systems of the AEW&C aircraft.
• A Software Support Center for modifying and testing the software for the mission systems before installing the software in the AEW&C aircraft.
• A Link Simulator used to simulate and test all the interfaces between the Data Link processor and the Command and Control System of the AEW&C aircraft.
• A Data Link Manager that provides the interface between the Data Link Processor and the Command and Control System of the AEW&C aircraft.
• A Firefinder Classroom Trainer that provides simulation of the Hellenic Army’s TPQ-36 and TPQ-37 Firefinder Radars able to train up to six (6) operators simultaneously.
• An Ammunition Management Information System that automates all the Hellenic Army’s Ammunition inventory, control and ordering functions.
• A Hellenic Air Force Management Information System that automates all the activities and procedures of the repair depots.
• A Military Message Handling System that automatically distributes and handles all the messages generated and circulated within the Hellenic Armed Forces.
• Five Universal Link Systems (ULS), in three distinct configurations, that provides connectivity and forwarding between multiple Data Links (Link 1, Link 11A/B, Link 16), providing the Hellenic Air Force’s Command and Air Defense Centers with a common recognized Tactical Air Picture vital to operational decision-making.
• Link 11 Split site capability to the Hellenic Navy allowing the operation of Link 11 with a centrally located DTS and separately located transmitter and receiver.
• An Enhanced Universal Link System (EULS) that concerns the development and incorporation of a Custom National Data Link and a National Command Link as well as additional sensor input and display as an extension to the ULS to be used by the Hellenic Armed Forces.
• The Air Defense Integrated System (ADIS) which will provide the enhancement of the operational capabilities, through the installation and integration of MIDS/Link-16 terminals, thus creating an integrated network centric Air Command and Control environment that takes advantage of the Link-16 capabilities. Such capability allows the tactical communication amongst the CRC’s, C2 Centers, the ERIEYE AEW&C, the new F-16s and other existing systems of the Hellenic Army and Navy and the Coalition Forces, through the ULS. The system is under implementation.
• The NARS System for the Hellenic Air Force that includes the ARS capability and the incorporation – through the system – of all the HAF major assets and Air Defence Systems into a Unified Air Defence Force. The National ARS automates the following operational procedures and capabilities: Air Control Center, Recognized Air Picture Production Center and Sensor Fusion Post. The system is under implementation.
• Portable Reconnaissance Image Screening System that assists the extraction, processing and forwarding of EO and Infrared Imaginary. The system parses imaginary data in accordance with STANAG 7023 and read data from STANAG 4575 compliant recorder

For Sweden:
• Flight Management Simulator as part of the ASC890 Airborne Early Warning System.
• Data Link Manager that provides the interface between the Data Link Processor and the Command and Control System of the ASC890 Airborne Early Warning System.

For the Romanian Air Force:
 An ATDL-1 Gateway for the integration and connection between the Fire Control Unit (FU) of legacy SAM Missile Systems and Command Centers.

For the European Space Agency (ESA):
• Maritime Surveillance System (MSS). ESA awarded a contract to ISI Hellas to develop the MSS as part of the Announcement of Opportunity 1-5819/08/NL/CB Call. The activities of the MSS are coordinated with the organisations performing the ESRIN Contract ‘Maritime Security Information Services’ (MARISS). The main objective of the MSS is to provide Maritime Surveillance based on space-borne fully polarimetric SAR images to detect, estimate the speed and altitude, classify and eventually present the detected vessels on a map-overlaid Graphical User Interface. The results of the MSS will be used as input to the development and integration of the EO/SAR/AIS Ship Tracking System.

ISI Hellas S.A.

  • Kritis & Gravias 12, 164 51 Argyroupoli, Athens, Greece
  • +30 210 964 7756 
  • +30 210 963 4892 
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