1. TASC End-to-End Network Modeling Using Terrestrial, Wireless and Satellite Components Ray Williams - TASC Ramon.Williams@ngc.com 7 June 2004 NASA Space Internet Workshop

2. TASC End-To-End Architecture/Model Methodology Data Discovery, Storage, Manipulation and Modeling Develop Complex End-to-End Architectures in Minutes Model and Analyze the Complete Environment – Terrestrial – Wireless – Satellite Analysis and Visualization To Accurately Depict Relationships and Performance – Satellite Tool Kit – Orbital Dynamics with Superior Interactivity – Integrated C4ISR Views with Popkin System Architect Architecture, Requirements and Schedule – GIS Tools/Methods and Associated Layers Day/Night Shading DTED and VMAP Terrain Data – Discrete Event Network Modeling Tools Network Simulator (ns-2) Opnet (IT Guru, Modeler)

3. TASC Data Discovery, Storage, Correlation/Transformation Terrestrial – Topology and Individual Host Data Obtained from nMap, nTop, Firewalk, Traceroute, tEthereal traces, Circuit Databases, … Wireless – RF Point-to-Point, Area Coverage Obtained from CSPT, Others – RF Survey Data From Kismet, GPSMap, GPSD, … – Laser Through NWP-ARPS Extensions Satellite – Orbital Parameters Taken from Two-Line-Element (TLEs), STK Import, … Requirements – Import of Customer Requirements Documents, DOORS, RequisitePro, AP233

4. TASC Terrestrial Based on TCP/IP V4/6 LAN and WAN Links Object Based-Extendable

5. TASC Wireless Point-to-Point Line-of-Sight RF and Laser Communications Links Object-Based Extendable

6. TASC Satellite Anything You Can Do In STK, I Can Import By Using STK We Can Focus On The Communications Interface Is Object-Based Extendable

7. TASC STK with it's Connect and Coverage Modules is Invaluable for Incorporating Satellite Objects into Network Scenarios – Architecture Components Exported to STK via Connect – STK is Commanded to Compute Coverage Times and Orbital Positions – STK Returns Values That Are Stored in a File That is Parsed Using Perl And Those Events Are Inserted into Time-Based Scenario File for Execution STK As A Compute Engine

8. TASC Our Automated Process Network Simulator Opnet End-to-End Model Framework Integrated Statistical Analysis Satellite Tool Kit Cellular 802.11 IP Hosts Routes

9. TASC Alternate Data Uses

10. TASC Model Inter-Relationships

11. TASC Issues With the Airborne/Space Link

12. TASC Variability in Wireless/Space Communications Figure 1 LEO-TRDSS RF Link Signal Strength

13. TASC Weather Models Simulation Modeling “Engines” 1. Spacecraft 2. Orbital & Geolocation 5. Meteorological & Propagation 3. Ground Station 4. RF Spectrum 5. Weather Interference (3 Distinct Thunderstorms ~12 Miles in Height)

14. TASC Integrated Model Output 1. Start of Network 2. Iridium 13 in Sight - Seattle to Washington Traffic Re-Routing 3. Iridium 13 - Out of Sight San Diego to Norfolk Traffic Routed Over Ground 4. No Satellite links up

15. TASC Acknowledgements Briefing is Based on the Paper Presented at the 2004 Society of Optical Engineers Conference (SPIE.org) at Orlando, FLA “End-to-End Network Models Encompassing Satellite, Terrestrial and Wireless Components” Majority of Screenshots Acquired From The TASC Rapid Architecture Development and Evaluation System (TRADES)

16. TASC