1. Current Status of GlobalSim Link between JTLS-GO + GESI
Donna Womble, PhD
ROLANDS & ASSOCIATES Corporation

2. Multi resolution modeling and simulation solution
Fully addresses primary and secondary training audiences at every level from a Joint Force Command down to a single Special Forces team
Supports a spectrum of operations from disaster assistance to asymmetric/hybrid conflict to wide-scale conventional combat

3. What Is GlobalSim? Joint Theater Level Simulation (R&A) GESI (CAE)
Introduction To JTLS
October 2009
What Is GlobalSim?
Joint Theater Level Simulation (R&A)
Represents Warfare Environment At
Operational Level
Not Tactical Level
GESI (CAE)
Tactical Level
Not Operational Level
GlobalSim is a two model High Level Architecture (HLA) simulation federation combining an operational level model and a tactical level model. HLA is structure to link simulations. What is important in an HLA federation is the Federation Object Model (FOM) which is used to describe how the two models communicate.
ROLANDS & ASSOCIATES Corporation
September 2019
ROLANDS & ASSOCIATES Corporation

4. Aggregate level simulation Covers theater area of operations
Entity level simulation
Multiple areas of interest
geographically separate

5. Difference Between GlobalSim And JLVC
FOM
Aggregated Objects
Entity Objects
HLA Management
Reliable Communications
No Heartbeat Requirements
Time Regulated
Time Constrained
Handles several Million entities in JTLS-GO, fewer in GESI
FOM
Entity Based
Extremely Detailed Information
HLA Management
Broadcast Communications
Heartbeat Status Requirement
Best Effort Time
Limited to approx 100K entities across federation
There is no right and wrong way to create an HLA federation, but you need to understand the differences between two federations that are commonly used.
The GlobalSim federation synchronizing the time represented in JTLS and GESI. There is a definite cause and effect relationship that can be maintained between the two models, Each model informs the HLA Run Time Infrastructure (RTI) program, the time of its next event. If GESI indicates that the next event is at 1004 and 32 seconds and JTLS indicates that the next event is at 1004 and 38 seconds, the RTI gives permission to GESI to execute its next event. Thus the RTI insures that the two models are synchronized in time.
Conversely, in the JLVC, since there are so many federates, each federate is told to look at the system time and as much as possible stay close to the designated system clock. There are many benefits and inadequacies in both methodologies.
ROLANDS & ASSOCIATES Corporation
September 2019

6. GlobalSim Conceptual Diagram
(VBS3)
The following is a brief conceptualized diagram of the GlobalSim Federation. JTLS is a global model and is capable of representing the full range of military operational level functions for air, land, naval, special forces, intelligence, and logistics at the aggregated unit level. The Combat Events Program (CEP) is the actual model and it provides full status information concerning the represented objects to the JTLS Object Data Authority or JODA. The JTLS Entity Level Simulation (ELS) takes this aggregated data, such as Unit A had 5 Tanks, 12 APC, and 3 Towed Artillery pieces and using a four-level template structure keeps track of the exact location of each entity. This entity location information is published on the Entity Object Data Authority (EODA). The JTLS HLA Interface Program takes the status information available on the two JTLS data servers and provides this information to the HLA RTI using the GlobalSim FOM.
GESI works in a similar manner. The GESI GlobalSim Plugin gets entity information from the RTI and informs GESI of the location of the individual entities. GESI also has the ability to publish these entities using the Distributed Interactive Simulation (DIS) environment.
ROLANDS & ASSOCIATES Corporation
September 2019

7. Current Capabilities of GlobalSim
Easy transfer of ownership, including all unit related information
Focus on Ground units in GESI
Aggregation and de-aggregation of forces
Cross model combat
Demonstrations performed at ITEC, I/ITSEC, and other specific locales

8. GlobalSim Vignette Joint Task Force (JTF) Exercise
Discovery Of A Terrorist Training Camp
Decision Is For A Direct Action Special Force Action
Option
Represent In JTLS – Aggregate Level
JTF Commander Only Receives Results
Represent In GESI – Observe the Full Evolution Of Action
When the exercise calls for viewing a situation in tactical level detail, control of the aggregated units are passed from JTLS to GESI. Interaction with the limited set of aggregate units can then be accomplished and represented at the tactical level. All logistics and combat results that occur in GESI are fully represented back in JTLS. When the tactical level vignette is complete, control of the units are returned to JTLS.
ROLANDS & ASSOCIATES Corporation
September 2019

10. Current Status Multi-Resolution Representation of Forces
Unit Ownership Transfer
Reflection of Entities between models
Supports Cross-Model Damage, Weapon Fires, and Weapon Detonations
Force-on-Force, ground combat: only in GESI
Units destroyed in GESI are automatically regained by JTLS

11. Evolvement of GlobalSim Federation
Representation of Supplies under development
Reflection of Supply levels
Consumption of ammunition and fuel by GESI
Transfer of Supplies between models
Process to Build Common Scenario Data
Mapping of Combat Systems and Supplies using DIS Enumerations
Correlation of Terrain: JTLS-GO GIS Tool combined with TerraVista (CAE) terrain tools

12. Current Limitations Unresolved issues with Attaches / Detaches
From previous link with JCATS (JMRM Federation)
Federation Representation of Convoys
truck convoys, rail cars, barges
Limited Availability to DIS-type viewers
For example: Virtual Battlespace - VBS3
Only possible through individual entities created from GESI-owned units
Advocate a direct EODA connection (like MUSE)

13. Questions JTLS Team: Lead – Ellen Roland CAE Project Manager:
Donna Womble
Bill Lynn
Harold Yamauchi
CAE Project Manager:
Geoff Ward (UK)
ROLANDS & ASSOCIATES Corporation
September 2019