Transcript Directed Energy Portfolio Review

DE Effects Committee Brief
HPM M&S Subcommittee
02 November 2009
Dr. Timothy J. Clarke
AFRL/RDH
Directed Energy Directorate
Air Force Research Laboratory
Dr. J. Mark DelGrande
SAIC
Summary
• Role of M&S
• Sample of Codes
• Present Activities
• Shortfalls
2
The HPM M&S Pyramid
•
•
DOD Modeling Pyramid
Simulates HPM system against one
or more target systems (devices or Results, not
networks of devices)
models, are
THUNDER
Bridges Physics & Mission Levels aggregated
CFAM
– Physics: study detailed
problems (e.g., sources &
antenna physics)
– Mission: flight packages (e.g.,
effectiveness and survivability
against targets with air
defenses)
•
and passed up Campaign
(Force-onthe pyramid
Force)
Mission
(Few-on-Few)
EADSIM
SUPPRESSOR
Engagement
(One-on-One/Few)
Physics
(Components & Subsystem Effects)
RF-PROTEC
DREAM
ICEPIC
TMax,
Antenna codes
Supports the following R&D functions
– Predicting HPM system lethality against electronic devices and systems of
devices
– Performing tradeoffs to optimize HPM effects
– Sensitivity studies to determine key parts of problem, and areas where
experiments can provide the most insight
3
HPM Physics Level Codes
Code
Type
Purpose
Physics
CARLOS
Physics
XFDTD
Physics
Xpatch
Microwave Studio (CST)
HFSS (Ansoft)
Physics
Physics
Physics
WIPL-D
AntFarm
GEMACS
IACS (Integrated Anechoic Chamber Simulator)
XGTD
Radio Frequency System Design Tool
Physics
Physics
Physics
Physics
Physics
Physics
Method of Moments (MoM) code, widely used for antenna and radar scattering
prediction for many DoD programs
FDTD code, Used for focused beam material measurement system characterization,
antenna design
Gov't Useage; Asymptotic code widely used by industry and government for radar
scattering
Antenna Design
FEM code; Used by industry/government for Antenna design
EM solver which uses higher order basis functions and the Method of Moments (MoM )
uses physical optics (PO) principles based on Apatch
Advanced Electromagnetics - 3D hybrid MoM/UTD/FDFD code
calculating fields in an anechoic facility using wave propagation
Spread sheet model
Physics - Electromagnetic and plasma in time domain – sources and propagation
ICEPIC
Physics
TMax
MCNP
ITS
MAGY
Physics
Physics
Physics
Physics
Interactive Scenario Builder (aka Builder)
MICHELLE
Physics
Physics
2D/3D Particle-in-cell code used by AFRL and contractors for HPM source simulations
FDTD (derived from LLNL's TSAR) used for detailed HPM propagation and effects
simulations
Monte-Carlo neutral particle transport code, models x-rays from sources
Magnetron design code
Model source at waveform level and EM propagation with antenna patterns and
environmental factors
4
Higher Level HPM Codes
Code
Type
Purpose
Circuit simulators – modeling prime/pulsed power
SPICE
Circuit
Engagement
HEIMDALL
HPM Tool
Engage
Engage
Sizing, weight code with some ability to model engagement level scenarios
Models HPM sources on satellites, including effects on satellite targets
RF propagation and target effectiveness analysis – propagation from source to target yielding probability of effect
CREATE-RF suite
RF-PROTEC
DREAM
ANODE
TEMPUS
JREM
DETES
Mission
Mission
Analysis
HPM propagation and predictive effects modeling tool
Calculates target probability of effect for HPM engagements
Design of Experiments code, develops Pe curves and optimized effects testing
Models RF propagation to and into complex targets
Analysis
Calculates the suseptability due to an HPM event on a vehicle at the platform level.
Graphically represented on the Army's battlefield environment OneSAF
Safety
Interoperability
Safety
Models RF propagation loss for FAA approval to test
Transmiter to Reciever Effectiveness
Predicts personnel and equip hazard areas for HPM testing
Safety
Builder
HPM THP (HPM Test Hazard Prediction)
5
Institute for High Power Microwave (HPM)
Employment, Integration, Optimization,
and Effects
Building and populating a framework to
propagate accurate and traceable
information from engineering level models
to mission and campaign level models to
allow for faster acquisition of HPM
systems that solve mission needs
(Whole Target)
MISSION- &
CAMPAIGNLEVEL
ANALYSIS
Pk MODELS
(Target Components)
Mission (EADSIM,
Pe MODELS
SUPPRESSOR)
Campaign (THUNDER,
Fault Trees
CFAM)
Advanced
network models
PROPAGATION
MODELS
Empirical Pe models
Predictive models
Platform
EMI/EMC
HPM SOURCE
Detail plasma and
material modeling
T Max – Finite Difference Time Domain
RF-PROTEC - Exterior & Interior ray-tracing
CREATE-RF-high fidelity propagation models
“In-situ” performance prediction
CREATE-RF-high fidelity propagation models
State of the art
optimization, design of
experiments, and
uncertainty quantification
will be available at all
levels to allow for rapid
analysis of alternatives
6
M&S Shortfalls
• Propagation Models
• Capability to quickly calculate fields inside of complex
structures, such as anechoic chambers, where multiple bounces
occur.
• Engagement Models
• Data to support engagement scenarios/validation
• Time-Out-of-Action: particularly data to support models
• Improved methods to assess/develop TTPs via M&S
7
M&S Shortfalls
• Effects Models
• “Physics-based” HPM effects prediction capability
• e.g., Elemental Modeling
• Data to support effects models that account for % degradation
• e.g., Network traffic reduction
• Other M&S Tools
• Predictive tools to assist testers in scoping HPM effects
parameter space, pre-test.
• A maintained database to collect and share the HPM data
supporting M&S
8
Summary
• We view our scope as effects-related M&S, specifically for counterelectronics applications, and not including ADS (human effects)
• We identified several near term and far term issues:
• Near term
• Time Out of Action: data to support models
• Predictive effects modeling
• Methodology for V&V of effects models (probably falls within
V&V subcommittee, but important enough to call out here)
• Ensuring that effects testing produces appropriate data to feed
engagement M&S
• Far term
• M&S support for BDA
• Wideband and low-frequency propagation models for
engagement M&S
9