Douglas Forsyth Executive Director for Facilities and Strategic Planning and Chief, Radar Research & Development Division December 2006 Presentation for the Working Group for Multifunction Phased Array Radar

Outline Background Background Funding History Funding History System Overview System Overview Data Quality Data Quality Upgrades Completed Upgrades Completed 1 st Tornadic Data Set 1 st Tornadic Data Set Future Upgrades Future Upgrades

Collaborators James Kimpel Dusan Zrnic Ron Ferek Tom McNellis Richard Vogt Jerry Crain Alan Shapiro William Benner John Heimmer

Behind the Scenes Allen Zahrai, Dick Doviak, Mike Schmidt and Richard Wahkinney Roger Simer, Brian Frasco, Sheldon Katz, Tim Maese, Ann Wiser, Steven Silberstein, Wayne Sabin, Mark Campbell Russell Cook Richard Vogt Susan Sedwick, John Havlicek Jim Melody, Les Lemon, Bob Blasewitz Nannette Kalani, Jim Olivo Bob Staples, John Carter, Igor Ivic

More Behind the Scenes Mark Benner, Mike Schmidt, Richard Wahkinney, Kurt Hondl, Allen Zahrai. Bob Staples, Chris Curtis, Rick Adams, John Thompson, Dave Priegnitz, Dan Suppes B. Ballard Susan Sedwick Jim Melody, Paul Baumgarder, Bob Blasewitz, Tim Maese Nannette Kalani Mark Campbell, Tim Maese, Wayne Sabin, Tim Hughes, John Petree

Additional Collaborators Qin Xu, Mike Jain Pam Heinselman, Sebastian Torres Gary Mitchell Bob Palmer, Tian-You Yu, Mark Yeary, Phil Chilson, Guifu Zhang

HISTORY NSSL Advance NSSL Advance –Desire to build a phased-array radar for weather applications Visit by Lockheed-Martin Visit by Lockheed-Martin Established collaborations with Office of Naval Research, Lockheed-Martin, and University of Oklahoma Established collaborations with Office of Naval Research, Lockheed-Martin, and University of Oklahoma Added additional partners, NWS Radar Operations Center, FAA, NOAA, Oklahoma State Regents for Higher Education, Basic Commerce Industries Added additional partners, NWS Radar Operations Center, FAA, NOAA, Oklahoma State Regents for Higher Education, Basic Commerce Industries

Phased Array Radar Support FY FY U.S. Navy ($10M), SPY-1 antenna ($10M) U.S. Navy ($10M), SPY-1 antenna ($10M) NOAA/NWS - WSR-88D transmitter ($0.4M) NOAA/NWS - WSR-88D transmitter ($0.4M) NOAA/OAR ($1.0M, EP) NOAA/OAR ($1.0M, EP) Lockheed Martin ($1.0M in kind, EP) Lockheed Martin ($1.0M in kind, EP) Oklahoma State Regents ($1.0M, EP) Oklahoma State Regents ($1.0M, EP) U. of Oklahoma ($0.5M, EP) U. of Oklahoma ($0.5M, EP) FAA ($8.0M) FAA ($8.0M) Navy/NOAA/FAA MOU Navy/NOAA/FAA MOU NOAA $1M $1M $4M $3M? FAA (to NOAA) $.8M $.8M $0M

What is Phased Array? Phasing = Timing Phasing = Timing Analogous: Ears & Sound waves Analogous: Ears & Sound waves Array of many Elements Array of many Elements 4-sided, no moving parts, scanned Electronically vs. mechanically (WSR-88D) 4-sided, no moving parts, scanned Electronically vs. mechanically (WSR-88D) Results: Faster Scans, more flexible scans Results: Faster Scans, more flexible scans

One BeamMulti-Beam Phased Array Radar (PAR)

NWRT Equipment AN/SPY-1A Antenna AN/SPY-1A Position Programmer (APP) WSR-88D Transmitter Environmental Processor (EP) Real-Time Controller (RTC) Receiver/Exciter Testbed Control Center (TCC) Pedestal & Antenna Pedestal Control (APC) Radome Facility

1 st Level - NWRT

2 nd Level – NWRT Inside Enclosure

Modified Transmitter (3.2 GHz)

Passive Array Min PRI = 800 m sec Short Pulse = 1.57 m sec Long Pulse = 4.71 m sec Sensitivity = 5.89 db at 50 km Wavelength = cm

136 modules 32 elements per module 4,352 elements Phased Array Antenna Element Module Beam width (Center) = 1.5 deg Beam width (+/- 45 deg) = 2.1 deg Antenna Tilt = 10 deg Antenna Height = 40 ft

Environmental Processor (EP) SkyComputers Ultra SPARC – Host 5 SKYbolt II modules each with 4 PowerPC G4 processors CD, hard and removable hard drive Ciprico RAID 648 Gbyte storage Development System – 2 SKYbolt II modules RAID Development System Operational System Removable Hard Drive

Matrix PC replacing the Environmental Processor (EP) Matrix PC Matrix PC Six Supermicro PCs Six Supermicro PCs –Dual Intel Xeon 2.4Ghz –2GB memory –Linux OS Connected to RTC via Systran SL100 PCI Card Connected to RTC via Systran SL100 PCI Card Myrnet Crossbar Switch Myrnet Crossbar Switch –Direct PC to PC communication at 2 Ghz 3 TB Raid 3 TB Raid 24 Port Network Switch 24 Port Network Switch One Node currently used to replace existing EP One Node currently used to replace existing EP

Multi-use Aircraft Tracking FAA and BCI development FAA and BCI development Uses Separate Processor for Data stream Uses Separate Processor for Data stream Runs simulateously with Weather Data collection Runs simulateously with Weather Data collection

2003/11/ UTC (Refl) KTLX 0.5 degNWRT 0.75 deg

2003/11/ UTC (Vel) KTLX 0.5 degNWRT 0.75 deg

NWRT STATUS Data Quality Issues Corrected Data Quality Issues Corrected –Bad Velocities Digital receiver filters Digital receiver filters Clear Mode Clear Mode –Pulse Timing –Six Degree Phase error Engineering Testing Phase Completed Engineering Testing Phase Completed Fixed STIM download problems Fixed STIM download problems

Upgrades Completed Backup Generators – Radar Facility and TCC Backup Generators – Radar Facility and TCC Continuous rotation 18 degrees per second Continuous rotation 18 degrees per second –Volume scan (14 levels) less than 60 seconds Improved display system Improved display system Improved User Interface Improved User Interface

Current Work Continue to learn operational capabilities (i.e. scan strategies, various processing modes, etc.) Continue to learn operational capabilities (i.e. scan strategies, various processing modes, etc.) Collect data for comparisons with WSR-88D and TDWR during storm season Collect data for comparisons with WSR-88D and TDWR during storm season Use for various Research Projects Use for various Research Projects –Transverse winds (NSSL/OU) –Refractive Index (OU) –Spectral Signatures of Tornadoes (OU/NSSL) –Clutter Canceling (NSSL/OU) –Scan Strategies – Beam Multiplexing (NSSL/OU)

Current Work Add Remote Operations (completed, fine tuning) Add Remote Operations (completed, fine tuning) Replace EP (completed, along with I/Q recording) Replace EP (completed, along with I/Q recording) Integrate with WDSS-II algorithms and 3-D displays Integrate with WDSS-II algorithms and 3-D displays Test Multi-use (FAA/BCI – aircraft tracking) Test Multi-use (FAA/BCI – aircraft tracking) Testing beam multiplexing Testing beam multiplexing Measure Antenna pattern Measure Antenna pattern Emulate adaptive Volume scans Emulate adaptive Volume scans Start design of dual-polarized sub-array Start design of dual-polarized sub-array

Beam Multiplexing Beam Multiplex VCP 12 Difference

May 29 th Comparison Reflectivity

May 29 th Comparison Velocity

May 29 th Comparison Gridded 1.Diff Times/Accuracy 2.Different Radar Locations 3.Ground Clutter 4.2 nd Trip 5.Polarization 6.Resolutions 1km vs. 244m 7.Sensitivity 8.Calibration errors 9.Beam Widths 10. Elevation Angle 11. PRT (Dwells)

Research Agenda (1-2 years) Learn Operational capabilities (I.e. scan strategies, various processing modes, etc.) Learn Operational capabilities (I.e. scan strategies, various processing modes, etc.) Collect data for comparisons with WSR-88D and TDWR during storm season Collect data for comparisons with WSR-88D and TDWR during storm season Use for various Research Projects Use for various Research Projects Add Remote Operations (completed, fine tuning) Add Remote Operations (completed, fine tuning) Replace EP Replace EP Integrate with WDSS-II algorithms and 3-D displays Integrate with WDSS-II algorithms and 3-D displays Test Multi-use (FAA – aircraft tracking) Test Multi-use (FAA – aircraft tracking) Implement beam multiplexing Implement beam multiplexing Start design of dual-polarized sub-array Start design of dual-polarized sub-array

Future Plans Available as National Facility in December 2006 Available as National Facility in December 2006 Adaptive scanning Adaptive scanning Continue to test Multi-use applications Continue to test Multi-use applications –Wind profiling –Aircraft tracking –Chemical/Biological profiling –Initialization of Models

ROADMAP Dual Polarization WSR-15PWA Locations

THANK YOU

VCP -12 Elevation Angles Elevation Angles –0.5 –0.9 –1.3 –1.8 –2.4 –3.1 –4.0 –5.1 –6.4 –8.0 –10.0 –12.5 –15.6 –19.5 The lowest three angles use "Split Cut" (CS/CD), middle angles use Batch (B), and higher angles use Contiguous Doppler (CDX) mode.