VV

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VVA Cost versus Risk
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Composability as wed like to see it
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Composability the reality
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Define the Concepts
Many factors affect the validity of a composable
simulation incorporating valid federates. These
factors fall into two broad categories
Technical Interoperability the capability of
federates (simulations) to physically connect and
exchange data Substantive Interoperability the
capability of federates when joined together to
provide adequate, accurate, and consistent
simulated representations which adhere to the
principles of fair fightand address the mission
objectives
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Technical Interoperability
FDMS (knowledge acquisition)
Data interchange standards, authoritative
sources
Repositories (MSRR)
MS Executive Agents
Recommended Practices (VVA and Fed Dev)
Information, analysis, and employment
assistance
Other Direct Support to Simulation
Developers/Users
Instrumented Ranges
Weapon Systems
Simulations
IndividualCombatants
Real-world C4I
Interfaces to live players
SupportUtilities
Runtime Infrastructure
Communications
Key
Reusable simulations developed elsewhere
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Technical Interoperability Issues

• Hardware compatibility
• Standards compatibility
• Time management coordination
• Coordinated use of RTI services
• Security issues

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Substantive Interoperability
Simulations abstract the actual world in their
representations, sometimes in very different
ways. These differences cause validity problems
when the simulations share aspects of their
representations to build an integrated simulated
world. Substantive interoperability addresses
validity problems at the representational level.
Thus, it depends directly upon the purpose your
federation serves and encompasses two primary
facets of the simulated world

• Interoperability among Entities
• Logical interaction between entities modeled in
  different federates
• Temporal resolution
• Spatial resolution
• Contextual Effects on Interoperability
• Coherent relationships between the components of
  the physical environment ground, ocean,
  atmosphere, weather, infrared, and electromagnetic

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Substantive Interoperability
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Substantive Interoperability Issues

• Logical interaction between entities modeled in
  different federates
• Temporal resolution
• Spatial resolution
• Coherent relationships between the components of
  the physical environment ground, ocean,
  atmosphere, weather, infrared, and
  electromagnetic

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VVA Vision
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Conceptual Model

• Concept
• A simulation conceptual model is a Developers
  way of translating the requirements into a
  detailed design framework, from which the
  software that will make up the simulation can be
  built. A simulation conceptual model is the
  collection of information which describes a
  Developers concept about the simulation and its
  pieces.
• Approach
• Convene an SIW study group to advance the
  understanding and enhance implementation of
  federation conceptual models
• Update the guidance related to conceptual models
  to reflect issues related to legacy and
  federation simulations.

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Specifications for Reuse

• Issues
• How do you effectively and appropriately reuse an
  existing simulation to support a purpose
  different than that for which the simulation was
  originally built?
• Reuse is predicated upon information about
  composable elements Information Data
  Context
• Approach
• Define documentation templates for simulation
  capabilities and constraints that can support
  determining whether or not a candidate simulation
  could be used for a specific purpose
• Evolve a validation process maturity model for
  MS that reflects the confidence that can be
  associated with artifacts derived from the
  validation process

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Substantive Interoperability

• Issues
• Logical interaction between entities modeled in
  different federates
• Temporal resolution
• Spatial resolution
• Coherent relationships between the components of
  the physical environment ground, ocean,
  atmosphere, weather, infrared, and
  electromagnetic
• Approach
• Perform a case study using reverse engineering to
  look at the approaches used in recent major
  distributed simulation developments and exercises
• Evolve the distributed simulation end-to-end VA
  process based on practical experience data
  gathered
• Provide front-end assistance to the initial
  planning and design phases of a similar
  distributed simulation development and exercise
  and gather initial insights on the effectiveness
  of the evolved process

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Contact Info
DMSO VVA Technical Director Simone
Youngblood syoungblood_at_dmso.mil 703-824-3436 DMS
O VVA Web Page https//www.dmso.mil/public/transi
tion/vva/ VVA Recommended Practices Guide
(RPG) http//vva.dmso.mil