UCATT PDG/PSG - Urban Combat Advanced Training Technologies

The large demand for joint military operations world-wide drives the military training requirements for combined training. NATO UCATT studied the NATO instrumentation needs for live simulation training and concluded that there is a requirement for a set of open international standards to allow live simulation systems to interoperate in a multinational training environment. In order to scope and guide its work, UCATT developed a functional architecture that defines the interfaces that need standardization to achieve that goal. Those interfaces include:

  • E1: Dynamic object interaction
  • E2: Training system status change
  • E3: Executive dynamic object interaction
  • E4: Dynamic object  reporting
  • E5: EXCON communication
  • E6: Receive C4I data
  • E7: Send C4I data
  • E8: Event data exchange
  • E9: Dynamic object association and pairing
  • E10: Exchange platform data
  • E11: Reference data exchange

The UCATT PDG envisions a family of standards which will allow the use of live simulation systems from multiple vendors in one (distributed) training area, without imposing system design. Finally, the UCATT PDG has a forward attitude towards LVC concepts and strives to enable interoperability with non-live systems where possible in all developed and published SISO products.

To leverage the work and products of other SISO PDGs and NATO MSGs and to avoid creating competing standards and references, UCATT investigates the use of existing SISO and IEEE products on a constant basis. For example, C2SIM standards are viable candidates for the E6 and E7 interfaces. HLA is chosen as the main candidate for the E8 interface, in conjunction with the UCATT- FOM (or U-FOM), which is an extension of NETN and RPR-FOM.

To date, the UCATT PDG has published four SISO Products:

The UCATT Product Support Group (PSG) serves as a central point for interpretations of product language, for providing help desk support to the SISO community, and for accepting, developing, and maintaining problem reports/change requests to support future product revisions. More concretely, the UCATT PSG will:

  • Liaise with the UCATT PDG and NATO MSG-174 UCATT-LSS(2) and its successors;
  • Deliver a yearly report to SISO SAC and the SISO community on the use of the supported products;
  • Facilitate and process Problem/Change Requests (PCRs);
  • Conduct a periodic review of the supported products;
  • Track and maintain a listing of organizations that use approved products.  Create success stories describing the use of products by those organizations and publicize on the SISO webpage.

SISO-GUIDE-003-00-2016, Guide for UCATT Live Simulation Standards and Architecture
The Guide for UCATT Live Simulation Standards and Architecture serves as an overarching document to provide context to the UCATT family of standards. It provides a historical background to the UCATT efforts, which started over fifteen years ago and went from study and analysis to delivering its first standard to the community. It explains the basis of all UCATT work to date: the operational use cases, Capability Requirement Matrix, the functional architecture, together with the benefits of the standard and study approach. The product was developed to be used in parallel with other UCATT products, by those who wish to use and incorporate them in system design.

SISO-STD-016-00-2016, Standard for UCATT Laser Engagement Interface
The primary objective of this optical interface specification is to establish a standard interface for the communication of a laser based simulated weapon engagement in a training environment. The intent is to prescribe the content and engagement methodology for the simulation of a number of classes of direct fire weapon systems. Compliance with these procedures enables interoperability between simulator equipment and systems provided from different vendors and manufacturers.

A typical weapon simulator is principally built up by two parts, the fire simulator and the target simulator. The weapon simulator may then simulate fire against a target and at the same time receive simulated fire from other weapon simulators. A weapon simulator may also be made up of only the fire simulator part, as in an antitank weapon, or only the target simulator part as on a truck. This Laser Engagement specification specifies how the different weapon simulators interact on the exercise area. All simulators on the exercise area have to follow the specification, to ensure that simulators can interoperate properly. The requirements in this specification are specifically important when different weapon simulators from different manufacturers shall interact on the exercise area.

SISO-REF-059-00-2015, Reference for UCATT Ammunition Table
The primary objective of the UCATT Ammunition Table is to establish a specification for the communication of a laser based simulated weapon engagement in a training environment. The intent is to prescribe the use of a number of classes of ammunition types for simulating direct fire weapon systems.

The ammunition tables serve as the enumerations for the E1 engagement interface, regardless of medium (laser or radio). The intent is that the product will be amended over time, adding new ammunition types and classes when necessary.

SISO-REF-073-00-2020, Test Plan for UCATT Laser Engagement Interface
In order to allow military users and live simulation vendors to ensure compliance with SISO-STD-016-00-2016, Standard for UCATT Laser Engagement Interface the UCATT PSG has established a test plan. The test plan describes the procedures and necessary testing equipment for compliance to the standard and achieving the “UCATT compliant” stamp.


SISO-STD-021-2021, Standard for UCATT Federation Object Model (UCATT FOM)
The objective of the U-FOM standard is to establish a standard interface for the communication of different EXCONs of Live Simulation systems in a multinational training environment. Compliance with this interface enables interoperability between Live Simulation EXCONs provided from different vendors and manufacturers.

SISO-REF-075-2021, UCATT FOM Enumerations Table
This Simulation Interoperability Standards Organization (SISO) Reference product presents the U-FOM specific enumerations supporting the UCATT FOM standard. These are defined in addition to the enumerations used by the RPR-FOM 2.0.

To join the UCATT PDG/PSG fill out the affiliation data form, subscribe to the discussion forum, and join the conversation.

Affiliation Data Form

Want to join the UCATT PDG/PSG?

Only current SISO members with completed affiliation information have voting rights in this group. To declare affiliation(s) and join this group, please become a member or Log in.
Become a SISO Member...
Learn how to become a member and take advantage of the benefits!
Already a Member?
Log in to complete your affiliation submission and become a part of the group.

Recently purchased a membership? Please be aware that it can take a few buisness days for your membership payment to be processed and until your payment has been processed you will not have access to this form. If you believe you are a current SISO member, who is logged in, and are still having trouble accessing the form, please contact siso-help@sisostds.org for account verification.
PDG/PSG Materials
 Visit the Discussions
Read and contribute

 Browse the Files
View documents, images, and more


Tom Ståle Christoffersen
Norwegian Defence Material Agency

Vice Chair:

Karl Roschei
German Army


Ulf Björkman
Saab Training and Simulation

Technical Activity Director (TAD):

Grant Bailey