Presentation on theme: "National Defense Industrial Association February 1, 2011"— Presentation transcript:
1National Defense Industrial Association February 1, 2011 CREATE-RF StatusNational Defense Industrial Association February 1, 2011
2CREATE-RF Development Product DescriptionProduct: SENTRISENTRI – Scalable Engineering Tools for RF IntegrationWhat it is:Computer Aided Engineering Software for DoD Electromagnetic ApplicationsDesigned for High Accuracy – Full Wave (non-optical) Numerical MethodsFinite ElementsBoundary IntegralHarmonic ExpansionsDesigned for Extensibility, Maintainability, and FlexibilityNot All Electromagnetic Applications are the sameNeed for Specific and Tailored Methods for Unique ApplicationsDesigned to Run on Wide Range of Computersfrom Engineering Workstations to High Performance ComputersSENTRI v1.5 is a re-architected version of SENTRI v1.0. To the external customer, there would be no difference, but internally, the code now allows for better maintainability, extensibility, and capability, due to the extensive software engineering that was performed during the re-factoring process.
3CREATE-RF Requirement Summary Antennas on Air, Sea, Ground, And Space PlatformsCommunication, Navigation, Surveillance, Target Recognition, Electronic Attack, Countermeasure, Etc.Global HawkThese requirements were identified by a number of tri-Service CEM experts. After arranging and binning them into near-, mid-, and far-term requirements, they were validated by the senior-level CREATE-RF Board of Directors. These requirements indicated where capability gaps existed; the Board’s “seal of approval” allowed CREATE-RF to take these requirements and construct/deliver our roadmaps, schedule, cost, etc. These requirements trace though almost all of our project execution and documentation., and are documented in our Board-approved Initial Capabilities Document, dated December 2008.We understand the other CREATE projects are moving towards use cases as a way to connect requirements and capabilities into their development strategy and development plan. These example problems are where we would begin to look to identify our project’s use cases. We will discuss with the Program Office and the other teams the benefits of identifying appropriate use cases for software development and testing.CREATE-RF undergoes a yearly requirements re-validation.Computational Electromagnetics Applies to Almost All DoD Systems
4Development Approach Background Benefits to DoD Acquisition Community ‘First-Pass’ DesignsDevelop High-Fidelity Codes to Model All Design Variables Reducing Risk That Design Goals Will Not Be MetLess Prototyping Faster and More Productive EngineeringHardware Prototyping is Time Consuming, Expensive, Provides Little Insight to Physical PhenomenaNew Concept Designs Higher Performance at Lower CostMethods Allow for the Exploration of Entire Design SpaceHigher Performance Requires New Designs and Materials to be ExploredA Single DoD Vehicle can have More Than 100 Antenna Systems
5CREATE-RF Development Product DescriptionChallenge of Computational ElectromagneticsComplex Geometries, Complex Material Application, Multi-Scale GeometriesComputationally Expensive for Accurate Full-Wave AnalysisElectromagnetic Phenomena (Singularities, Resonances, Wide-Band)Prof. Jin-Fa Lee
6CREATE-RF Development Problem Size (Unknowns) Product DescriptionChallenge of Computational ElectromagneticsUnknown Count with Notional Aircraft1010VHFUHFLSCXKuKKa10920M1085M500M1071M180MLength = 15.5 mWidth = 8.9 mHeight = 4.1 mProblem Size (Unknowns)50M200K10620K105100 MHz to 40 GHz10 samples/λ104103102103104105Frequency (MHz)Source: Riverside Research Institute
7Development Approach SENTRI at version 1.5 Product Roadmap Antenna ModelingPatch, Notch, Horn, Spirals (Applications: Radar, Communication, GPS)Phased Array AntennasCavity Backed Antenna (Approximate In-Situ Analysis)Periodic StructuresFrequency Selective SurfacesCircuit Analog AbsorbersMetamaterialsInfrared Filters / AbsorbersMicrowave CircuitsPower SplittingMaterial MeasurementFiltersCirculatorsRadar Cross-Section PredictionAs an example, the following slides go into some of the technical issues associated with solving phased array antennas. The other functions listed above have many unique technical issues of their own.
8Development Approach Future Releases of SENTRI Product RoadmapFuture Releases of SENTRIFull End-to-End Analysis SystemGraphical User InterfaceMaterial DatabaseVisualization of SolutionsAnalysis TraceabilityOptimizationProgrammable SystemSoftware Release as a Application Programming Interface for Further Tailoring by End User
9Development Approach Rapid Design Codes Development StrategyRapid Design CodesWhat Engineers Need for Their Design WorkHigh Fidelity CodesDesign Optimization Techniques Integrated with Rapid Design / High-Fidelity CodesMaking Engineers Productive by Automating Design ToolsSpecialized Codes for Particular ApplicationsBig Payoff – Solving Problems that Others Can’t
10Rapid Design Methods High Fidelity Methods Design Space Development ApproachDevelopment StrategyDesign SpaceRapid Design MethodsHigh Fidelity MethodsOptimal DesignRapid Design Methods Narrow Design SpaceHigh Fidelity Methods Model All Variables, Optimal Design
11Development Approach Rapid Design Codes Development StrategyRapid Design CodesWhat Engineers Need for Their Design WorkHigh Fidelity CodesDesign Optimization Techniques Integrated with Rapid Design / High-Fidelity CodesMaking Engineers Productive by Automating Design ToolsSpecialized Codes for Particular ApplicationsBig Payoff – Solving Problems that Others Can’t
12Development Approach Rapid Design Codes Development StrategyRapid Design CodesWhat Engineers Need for Their Design WorkHigh Fidelity CodesDesign Optimization Techniques Integrated with Rapid Design / High-Fidelity CodesMaking Engineers Productive by Automating Design ToolsSpecialized Codes for Particular ApplicationsBig Payoff Solving Problems that Others Can’t
13Application ExamplesMicrowave Circuit AnalysisSanity Check - Code to Code Comparison: SENTRI vs. CST Microwave StudioHigh Dielectric Coupled-Ring Filterε = 38 (both)DielectricAirCoaxε = 2.4Normal H on symmetry plane.Successfully Benchmarked w/ Independent Software Vendor Tools
14Application Examples Sanity Check – SENTRI vs. Published Results MetamaterialsSanity Check – SENTRI vs. Published Results
15Application Examples Sanity Check – SENTRI vs. Published Results MetamaterialsSanity Check – SENTRI vs. Published ResultsSENTRI
16Printed Circuit Antennas Application ExamplesPrinted Circuit AntennasSENTRI vs. Commercial CodesStripline feed.Radial stub.Exponential tapered slot, cut into metal.λ/4 reflectorRadiating slotline mode.xySolution domain.Near field is post-processed, could be used as illumination for other problems.Return Loss (S11) dBFrequency, GHzLegend(v1)(v1.5)Successfully Benchmarked w/ Independent Software Vendor Tools
17Application ExamplesAntenna Patch ArrayA large printed array is an antenna-type problem that also benefits.Gain (left) & field structure (right).
19Running Large, High Fidelity Models Analysis ScalabilityRunning Large, High Fidelity ModelsBig Computers Not the Total SolutionO(N3)O(N log N)Desired endpoint: asymptotically competitive algorithms, scaled well to next-gen HPC platformsPO(N log N)/PProblem SizeTime to SolutionACA, FMM (FY10)Open MP + MPIMPIHierarchical-ACA, ML-FMMO(N1.5)/PBig Computers + Algorithms that Scale with Problem Size
20ConclusionComputational Electromagnetic Applications are Challenging but with High Performance Computers and Advanced Numerical Methods they can be SolvedCREATE-RF Software DevelopmentFor Use by DoD Government and US Defense Industry EngineersAllows for Specific Tailoring for Special ApplicationsTech-Transfer Mechanism for Next-Gen of Gov’t EngineersCREATE-RF Transfer to Military IndustryComplete Analysis PackageRuns on Workstations and High Performance ComputersProgrammable System for End User Extensibility