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National Weather Radar Testbed

National Weather Radar Testbed. Wayne Sabin Lockheed Martin Walter Mazur Lockheed Martin Timothy Maese Lockheed Martin James Hunziker Lockheed Martin Bob Walsh SKY Computers, Inc. DISPLAY TEST TOOL. REALTIME. UF. RADAR. WEATHER. UF HARD. CONTROLLER. FILES. SCHEDULER. DISPLAY.

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National Weather Radar Testbed

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  1. National Weather Radar Testbed Wayne Sabin Lockheed Martin Walter Mazur Lockheed Martin Timothy Maese Lockheed Martin James Hunziker Lockheed Martin Bob Walsh SKY Computers, Inc.

  2. DISPLAY TEST TOOL REALTIME UF RADAR WEATHER UF HARD CONTROLLER FILES SCHEDULER DISPLAY DRIVE OPR INFC OPR INFC STIMS, STATUS CONTROL EXTERNAL TIMING UF FILES STATUS STATUS LAN REMOVABLE I/Q, STIM EP INTERFACE SOFTWARE DATA STORAGE DEVICE CONTROL / DATA I/Q, IF ANALOG EP SPECTRAL DIGITAL DIGITAL WEATHER I/Q, STIM STIM SIGNAL MOMENTS RECEIVER INTERFACE SIGNAL DATA RECEIVER PROCESSOR PROCESSOR FIBER DR SW WDP SW EPI SW DSP SW I/Q, STIM FIBER I/Q DATA RECORDING DEVICE ENVIRONMENTAL PROCESSOR NWRT System Overview

  3. Environmental Processor Hardware Architecture Radar Scheduler Test Display System System Disk RAID Ethernet Force GT SBC Systran Myriad SKYbolt II SKYbolt II SKYbolt II SKYbolt II SKYbolt II F i b r e X F i b C h P P C 7 4 1 0 P P C 7 4 1 0 P P C 7 4 1 0 P P C 7 4 1 0 P P C 7 4 1 0 Ethernet I/Q Data and Stims from Digital Receiver F P D P F P D P F P D P Processed UF Data 2 Wide 8 Slot SKYchannel Crossbar Backplane VME Backplane

  4. Environmental Processor COTS Hardware • Uses SKY Computers SKYbolt II Architecture • Merlin Daughtercards - 4 PPC 7410 • 5 Cards - 20 PPCs Total • 1 Gbyte RAM per Merlin • SKYrider FPDP Interface To Outside Data • SKYchannel 8 Slot Interconnect • 320 Mbytes/sec • Force 54VT SBC For Downloading And NFS • 512 Mbyte RAM

  5. Environmental Processor COTS Hardware • Echotek GC-814 Digital Receiver • Echotek Raceway Interconnect • Echotek Raceway to PCI Module • 80 Mbytes/second radar data transfer to Environmental Processor • Systran FibreXtreme VME Card • Receives FibreXtreme From Digital Receiver • Capable of 105 Mbytes/second - 80 Mbytes/sec used • Converts To FPDP (Copper) • Sends To Myriad and SKYrider • VME Supplies Power Only

  6. Environmental Processor COTS Hardware • Myriad FC-1930 RAID Controller • Receives Data Through FPDP • Writes Data To Raid in Real-Time • Reads Back RAID Data For Post Processing • Ciprico RAID • 648 GByte Storage • Removable Disks

  7. Environmental Processor Software • All software coded in C • Optimized for PowerPC with SKYvec compiler • DSP algorithms use VSIPL API for portability • Three basic data processing modes • Reflectivity Only • Pulse Pairs • Pulse Doppler • Types of processing • Matched Filtering • Clutter Filtering • N-point FFTs • Range/Channel Averaging • Spectral Moment calculations (reflectivity, velocity, SNR, spectrum width)

  8. Environmental Processor Data Flow Averaging and Sorting Data Digital Receiver Radar Data and Stims Controller Spectral MomentProcessing Radar Data Packets and EP Stims Spectral Moments Digital Signal Processors (16)

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