Use of the OMG DDS standard in Simulation. A new Way for developing Real Time Distributed Simulations

www.nexteleng.es/microsite/ncware

Use of the OMG DDS standard in Simulation. A new Way for
developing Real Time Distributed Simulations
NADS
Nextel Aerospace, Defence & Security

Jose M Lopez-Rodriguez
Business Development Director
http://www.nexteleng.es/microsite/ncware
jmlrodriguez@nexteleng.es
© NADS 2011 Commercial in confidence Nextel Aerospace & Defence & Security (NADS)


▪ New Trends in Simulation

▪ Why HLA and DDS cohabitation in simulation systems?

▪ Mixing HLA and DDS standards in an open Simulation
architecture

▪ Some use cases



A simulation market in constant evolution …
To integrate in Net‐Centric Environments.

New applications: New Requirements

Virtual Military Exercises Massive Distributed Simulation

Mission Rehearsals Training in team skills

Battle Labs Interoperability

Embedded simulation



… brings new Requirements for M&S
Technology
Simulators as network assets in Net-Centric federations of Systems.

Open Architectures and modular design for Simulators

Plug&play simulation Architectures

Distributed architectures with QoS

Capability of deployment over heterogeneus networks.

Development based on existing repositories

Seamless interoperability



From alone simulator … … To Simulation Networks
Individual Training Team Training

DATA
CENTRIC

M&S assets in NCW
Individual training Tactical Training networks
Propietary technologies COTS based (mostly in Fully distributed arch
Client-Server Architecture hardware) Data centric design
Very few use of COTS Client-Server architecture Open architectures for
Non Interoperable Simulators as “black box” simulators (white-box
ystems. approach)
Interoperability using
GATEWAYS (DIS or HLA)

M&S SENSORS C4I



Towards massive distributed Simulation
The Navy identified networked trainers as a key requirement in future training systems.
Networking capability exists in many simulators, but frequently the capability is cumbersome
to set up and difficult to use, particularly when participants are not collocated. In addition,
the speed is not yet available to support the requirements for real time simulation across
distributed networks. There are work-arounds, but they do not currently support full, real time
simulations. The ability to easily and seamlessly link multiple training devices into the same
training scenario will greatly enhance the quality and effectiveness of the training.
[…]
Effective networking of simulators will require a common architecture and industry wide
standards. Over the years, the High Level Architecture has provided the foundation for
this standard, but going forward these standards will need to expand to accommodate
new capabilities and new participants. The NASMP needs normalized, consistent
architecture and a well articulated business case to justify the investment in the NASMP.

Is HLA enough?

(*) Extracted from NTSA market survey : Training 2015: Requirements - Trends - Forecasts for the Decade Ahead.


The Simulation Standard : HLA (IEEE 1516)

▪ HLA is a mature standard for simulation, with next major
milestones:
□ Born in early 90’s sponsored by US DoD
□ US DoD std in 1998 (HLA 1.3)
□ IEEE std in 2000 (IEEE 1516-2000)
□ New release in 2010 (IEEE 1516-2010), best known as HLA
Evolved.

▪ HLA is an architecture for doing simulation with:
□ An interface spec. Defines a common API for the HLA
middleware : Run-Time Infrastructure (RTI).
□ An Objet Model Template (OMT). Defines a metadata
model for HLA simulations.
□ Some Rules that simulation must follow to be HLA
compliant.




Federate Federate
Subscribe
Publish
(Object:Aircraft)
(Object:Aircraft)

RTI

Publish (
Interaction: Fire)

Federate




□ Historically, HLA has had some problems ….
▪ Lack of real time features
▪ The wire protocol is not standarized.
▪ Mainly you only have interoperability and reusability to the system
level
▪ Interoperability with other real systems is very limited.

□ HLA evolved improves some things:
▪ Add some QoS included (smart update rate, Fault Tolerance)
▪ Provides a web services interface.
▪ Add Dynamic Link compatibility for different RTIs
▪ Enables modular Objet Models.



Is HLA enough?

1. HLA Evolved still lacks of a wire protocol.

2. QoS are very limited.

3. Web Services are not always the best way of integrating
with real-time critical systems

4. HLA RTIs performances are not enough for massive
distributed simulation federations with real time
requirements.



DDS vs HLA performances

Data size (bytes)

Pitch pRTI 10 100 1.000 5.000

33.863 40.000 16.835 9.174
Update rate updates/second

3 31 128 350
Throughput Mbit/second

125 140 172 250
Latency microseconds

8 128 1.024 4.096
OSDDS
3.939.000 661.120 94.184 23.994
update rate updates/second

240 646 736 750
Throughput Mbit/second

90 80 110
Latency microseconds



The Traditional software Architecture of a RT Simulator

WEAPON1 PERISC. SONAR1

SONAR2

WEAPON2
WIU VISUAL
SISTEM 1
WEAPON3

CONTROL NAV
EWS SIM SENSORS

OTHER
SENSORS CONSOLES

SYSTEM2
SEABED RECORDER
ENVIRONM.
ACOUSTIC
TACTICAL ENVIRONM
ENVIRONM.
EM IOS VOICE
ENVIRONM COMMS


Distributed Simulation with HLA

Simulator 1 Simulator 2
(black-box (black-box
design) design)
HLA FEDERATION
propietary propietary
interface Federation
interface
Object Model
HLA (FOM)
HLA
Gateway 1 Gateway 2
RTI RTI
HLA HLA

Sim A Object Sim B Object
Model (SOM) Model (SOM)



Our proposal in a snapshot…

Market Requests… Our proposal…
▪ Open simulation Architectures ▪ Data centric design based on a
HLA & DDS compliant middleware

▪ Distributed architectures with QoS ▪ Use of DDS for simulation

▪ Interoperate with NEC “clouds” ▪ DDS as a common messaging
technology
▪ Development based on existing
repositories ▪ Model Driven Developments

▪ Interoperability ▪ Cohabitation of HLA and DDS
standards.



Migrating to an Open Distributed Simulation Architecture

WEAPON1 SONAR1

WEAPON2 SYSTEM1

RT Simulation Middleware
WEAPON3

(HLA & DDS compliant)
NAV
SENSORS
ACOUSTIC IMAGE
GENERATOR GENERATOR
SEABED SONAR2
ENVIRONM
ACOUSTICAL CONSOLES
ENVIRONM
OTHER RECORDER
SENSORS
EM VOICE
ENVIRONM COMMS
TACTICAL IOS
ENVIRONM
WIU PERISC.

SYSTEM 1 SYSTEM 2


Some advantages of an Open Simulation Architecture

Concept of HLA Federation applied to the SONAR1
DDS
WEAPON1 HLA

Internal Simulation Architecture.
WEAPON2 DDS
HLA SYSTEM1

RT Simulation Middleware
WEAPON3 DDS
DDS NAV
Make easy the System level Design.
DDS
SENSORS
ACOUSTIC IMAGE
GENERATOR GENERATOR

(NCWare)
SEABED
Rapid design and development based on
HLA
SONAR2
ENVIRONM
Repositories and COTS.
ACOUSTICAL DDS
DDS CONSOLES
ENVIRONM
HLA
OTHER RECORDER
SENSORS
Less risky and more cost-effective integration
EM
HLA
VOICE
and testing.
ENVIRONM
HLA
COMMS
TACTICAL IOS
ENVIRONM
DDS
WIU
Saving costs and speed up time to market PERISC. up
SYSTEMto 50%
1 SYSTEM 2


Our technology : SIMWARE
SIMULATOR 2 SIMULATOR N
Simulation Simulation Federate
SIMULADOR 1 Module 1 Module 2 1
Federate Federate
SIMWARE 2 3

NCWare SIM NCWare
NCWare RTI
Gateway

DDS DDS DDS HLA HLA

DDS Network HLA Network

OpenSplice DDS

SQL
DDS DDS DDS WS / SOAP
ODBC

NCWare NCWare NCWare

Information Information Information
Sensor APP C4I SYSTEM System 1 System i System N

MIP DM MIP DM LEGACY DM
SENSOR C4I SYSTEM C4I SYSTEM


SimWare: Framework for building a Federation of Sim Assets
Reusable
Distributed Host
New development

eHost Scheduler Modules developed
with SimDeveloper

Sim Sim Sim eHost
Model Model Model Manager

NCWare

Data Model Middleware NCWare (DDS + HLA compliant)

NCWare
NCWare NCWare

Virtual
IOS

SES
CIGI compliant IG display

© NADS 2011
IOS Visual System
Commercial in confidence
Cockpit
Nextel Aerospace & Defence & Security (NADS)


Somes use cases : A Federation of Sim
Assets for the SP MoD




MDD based on Sim Assets Database Specialized Sim
SimDeveloper Configuration Mgment Components
Development of Content Mgment Sim Entity with HMI,
Simulation Assets Web access business logic and data
Development of Sim interfaces
Asset’s IOS. Independence of Sim
Enables reusability of runtime infrastructure
blocksets and other
libraries of Mathworks
products
Automatic code gen



Simulation Simulation
Model HMI
HiFi dynamic Model Parameter Control
Event based during execution
Compliant with a State Parameter configuration
Machine in planning session.




Simulation

NCWare Sim
Simulation Simulator
Model IOS
HMI

Simulation
HMI Simulation SIMWARE Sim
Simulation Model Engine
Asset



Interoperating HLA systems with DDS
compliant systems

HLA HLA
federate federate
RTI
HLA

HLA DDS
Federation Domain



Interoperating DDS and HLA systems with
SimWare
HLA
federate
NCWare
RTI
HLA
federate
RTI DDS
HLA
HLA Domain

federate
RTI HLA

HLA
Federation

HLA
NCWare Sim
Domain Gateway



A small demonstration of the Gateway

SimShapes HLA- DDS SimShapes
HLA Gateway DDS
NCWare SIM
Mak NCWare SIM
RTI
OpenSplice
OpenSplice DDS DDS

HLA
DDS Domain
Federation



Could the future be like this?

SYNTHETIC RED FORCES
REAL LIVE BLUE FORCES Generated by an HLA-compatible CGF
Using 2011 layer for communications confidence
DDS Injected into COP, BMS and
© NADS
over Disadvantaged Grids
Commercial in
Virtual Nextel Aerospace & Defence & Security (NADS)
Radars through DDS


Open Architecture
Interoperability
Real systems & Simulators Blend
DDS
QoS
Full lifecycle COTS HLA
Real-Time
development
tools Automation
High Level Design



For more information…

Jose M Lopez-Rodriguez
Business Development Director
http://www.nexteleng.es/microsite/ncware
jmlrodriguez@nexteleng.es

© NADS 2011
AGENT & PARTNER Commercial in confidence
RATIONAL SPECIALISTS
Nextel Aerospace & Defence & Security (NADS)
ISO 9001 CERTIFIED ISO 9100 CERTIFIED

Use of the OMG DDS standard in Simulation. A new Way for developing Real Time Distributed Simulations

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