Douglas Forsyth Executive Director for Facilities and Strategic Planning and Chief, Radar Research &...
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Transcript of Douglas Forsyth Executive Director for Facilities and Strategic Planning and Chief, Radar Research &...
Douglas ForsythDouglas ForsythExecutive Director for Facilities and Strategic Executive Director for Facilities and Strategic
Planning Planning
andand
Chief, Radar Research & Development DivisionChief, Radar Research & Development Division December 2006
Presentation for the
Working Group for
Multifunction Phased Array Radar
OutlineOutline• BackgroundBackground• Funding HistoryFunding History• System OverviewSystem Overview• Data QualityData Quality• Upgrades CompletedUpgrades Completed• 11stst Tornadic Data Set Tornadic Data Set• Future UpgradesFuture Upgrades
CollaboratorsCollaboratorsJames KimpelDusan Zrnic
Ron Ferek
Tom McNellis
Richard Vogt
Jerry CrainAlan Shapiro
William Benner
John Heimmer
Behind the ScenesBehind the ScenesAllen 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 CookRichard Vogt
Susan Sedwick, John Havlicek
Jim Melody, Les Lemon, Bob Blasewitz
Nannette Kalani, Jim Olivo
Systems and Software Engineering
BCI BCI
Bob Staples, John Carter, Igor Ivic
More Behind the ScenesMore Behind the ScenesMark 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 CollaboratorsAdditional CollaboratorsQin Xu, Mike Jain
Pam Heinselman, Sebastian Torres
Gary Mitchell
Bob Palmer, Tian-You Yu, Mark Yeary, Phil Chilson, Guifu Zhang
HISTORYHISTORY
• NSSL Advance - 1997NSSL Advance - 1997– Desire to build a phased-array radar for weather Desire to build a phased-array radar for weather
applicationsapplications
• Visit by Lockheed-Martin - 1998Visit by Lockheed-Martin - 1998• Established collaborations with Office of Naval Established collaborations with Office of Naval
Research, Lockheed-Martin, and University of Research, Lockheed-Martin, and University of Oklahoma - 1999Oklahoma - 1999
• Added additional partners, NWS Radar Added additional partners, NWS Radar Operations Center, FAA, NOAA, Oklahoma Operations Center, FAA, NOAA, Oklahoma State Regents for Higher Education, Basic State Regents for Higher Education, Basic Commerce IndustriesCommerce Industries
Phased Array Radar SupportPhased Array Radar Support
FY2000 - 2003FY2000 - 2003• U.S. Navy ($10M), SPY-1 U.S. Navy ($10M), SPY-1
antenna ($10M)antenna ($10M)• NOAA/NWS - WSR-88D NOAA/NWS - WSR-88D
transmitter ($0.4M)transmitter ($0.4M)• NOAA/OAR ($1.0M, EP)NOAA/OAR ($1.0M, EP)• Lockheed Martin ($1.0M in Lockheed Martin ($1.0M in
kind, EP)kind, EP)• Oklahoma State Regents Oklahoma State Regents
($1.0M, EP)($1.0M, EP)• U. of Oklahoma ($0.5M, EP)U. of Oklahoma ($0.5M, EP)• FAA ($8.0M)FAA ($8.0M)• Navy/NOAA/FAA MOUNavy/NOAA/FAA MOU 2004 2005 2006 2007
NOAA $1M $1M $4M $3M?
FAA
(to NOAA) $.8M $.8M $0M
What is Phased Array?What is Phased Array?
• Phasing = TimingPhasing = Timing
• Analogous: Ears & Sound wavesAnalogous: Ears & Sound waves
• Array of many ElementsArray of many Elements
• 4-sided, no moving parts, scanned 4-sided, no moving parts, scanned Electronically vs. mechanically (WSR-Electronically vs. mechanically (WSR-88D)88D)
• Results: Faster Scans, more flexible Results: Faster Scans, more flexible scansscans
Wavefront(Plane of equal phase radiation)
Beam is steered by progressively shifting the phases of thesignals radiated by the individual radiators.
Beam is conventionally steered by mechanically deflectingthe antenna
One Beam Multi-Beam
Phased Array Radar (PAR)Phased Array Radar (PAR)
NWRT EquipmentNWRT Equipment
AN/SPY-1A Antenna
AN/SPY-1A PositionProgrammer (APP)
WSR-88D TransmitterEnvironmentalProcessor (EP)
Real-Time Controller (RTC)Receiver/Exciter Testbed
ControlCenter (TCC)
Pedestal &Antenna Pedestal Control (APC)
RadomeFacility
Passive ArrayMin PRI = 800 sec
Short Pulse = 1.57 sec
Long Pulse = 4.71 sec
Sensitivity = 5.89 db at 50 km
Wavelength = 9.375 cm
136 modules32 elements per module4,352 elements
Phased Array Antenna
Element
Module
Beam width (Center) = 1.5 degBeam width (+/- 45 deg) = 2.1 degAntenna Tilt = 10 degAntenna 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
DevelopmentSystem
Operational System
RemovableHard Drive
Matrix PC replacing the Matrix PC replacing the Environmental Processor (EP)Environmental Processor (EP)• Matrix PCMatrix PC• Six Supermicro PCsSix Supermicro PCs
– Dual Intel Xeon 2.4GhzDual Intel Xeon 2.4Ghz– 2GB memory2GB memory– Linux OSLinux OS
• Connected to RTC via Connected to RTC via Systran SL100 PCI CardSystran SL100 PCI Card
• Myrnet Crossbar SwitchMyrnet Crossbar Switch– Direct PC to PC Direct PC to PC
communication at 2 Ghzcommunication at 2 Ghz• 3 TB Raid3 TB Raid• 24 Port Network Switch24 Port Network Switch• One Node currently used One Node currently used
to replace existing EPto replace existing EP
Multi-use Aircraft TrackingMulti-use Aircraft Tracking
• FAA and BCI FAA and BCI developmentdevelopment
• Uses Separate Uses Separate Processor for Data Processor for Data streamstream
• Runs simulateously Runs simulateously with Weather Data with Weather Data collectioncollection
NWRT STATUSNWRT STATUS• Data Quality Issues CorrectedData Quality Issues Corrected
– Bad VelocitiesBad Velocities•Digital receiver filtersDigital receiver filters•Clear ModeClear Mode
– Pulse TimingPulse Timing– Six Degree Phase errorSix Degree Phase error
• Engineering Testing Phase CompletedEngineering Testing Phase Completed• Fixed STIM download problemsFixed STIM download problems
Upgrades CompletedUpgrades Completed
• Backup Generators – Radar Facility Backup Generators – Radar Facility and TCCand TCC
• Continuous rotation 18 degrees per Continuous rotation 18 degrees per secondsecond– Volume scan (14 levels) less than 60 Volume scan (14 levels) less than 60
secondsseconds
• Improved display systemImproved display system
• Improved User InterfaceImproved User Interface
Current WorkCurrent Work
• Continue to learn operational capabilities Continue to learn operational capabilities (i.e. scan strategies, various processing (i.e. scan strategies, various processing modes, etc.)modes, etc.)
• Collect data for comparisons with WSR-Collect data for comparisons with WSR-88D and TDWR during storm season88D and TDWR during storm season
• Use for various Research ProjectsUse for various Research Projects– Transverse winds (NSSL/OU)Transverse winds (NSSL/OU)– Refractive Index (OU)Refractive Index (OU)– Spectral Signatures of Tornadoes (OU/NSSL)Spectral Signatures of Tornadoes (OU/NSSL)– Clutter Canceling (NSSL/OU)Clutter Canceling (NSSL/OU)– Scan Strategies – Beam Multiplexing (NSSL/OU)Scan Strategies – Beam Multiplexing (NSSL/OU)
Current WorkCurrent Work
• Add Remote Operations (completed, fine Add Remote Operations (completed, fine tuning)tuning)
• Replace EP (completed, along with I/Q Replace EP (completed, along with I/Q recording) recording)
• Integrate with WDSS-II algorithms and 3-D Integrate with WDSS-II algorithms and 3-D displaysdisplays
• Test Multi-use (FAA/BCI – aircraft tracking)Test Multi-use (FAA/BCI – aircraft tracking)• Testing beam multiplexingTesting beam multiplexing• Measure Antenna patternMeasure Antenna pattern• Emulate adaptive Volume scansEmulate adaptive Volume scans• Start design of dual-polarized sub-arrayStart design of dual-polarized sub-array
May 29May 29thth Comparison ComparisonGriddedGridded
1. Diff Times/Accuracy
2. Different Radar Locations
3. Ground Clutter
4. 2nd 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 Research Agenda (1-2 years)years)• Learn Operational capabilities (I.e. scan Learn Operational capabilities (I.e. scan
strategies, various processing modes, etc.)strategies, various processing modes, etc.)• Collect data for comparisons with WSR-88D and Collect data for comparisons with WSR-88D and
TDWR during storm seasonTDWR during storm season• Use for various Research ProjectsUse 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 Integrate with WDSS-II algorithms and 3-D
displaysdisplays• Test Multi-use (FAA – aircraft tracking)Test Multi-use (FAA – aircraft tracking)• Implement beam multiplexingImplement beam multiplexing• Start design of dual-polarized sub-arrayStart design of dual-polarized sub-array
Future PlansFuture Plans
• Available as National Facility in Available as National Facility in December 2006December 2006
• Adaptive scanningAdaptive scanning• Continue to test Multi-use applicationsContinue to test Multi-use applications
– Wind profilingWind profiling– Aircraft trackingAircraft tracking– Chemical/Biological profilingChemical/Biological profiling– Initialization of ModelsInitialization of Models
VCP -12VCP -12
• Elevation AnglesElevation Angles– 0.50.5– 0.90.9– 1.31.3– 1.81.8– 2.42.4– 3.13.1– 4.04.0– 5.15.1– 6.46.4– 8.08.0– 10.010.0– 12.512.5– 15.615.6– 19.519.5
The lowest three angles use "Split Cut" (CS/CD), middle angles use Batch (B), and
higher angles use Contiguous Doppler (CDX) mode.