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Dual Polarization Upgrade. A H ardware Perspective. Existing WSR-88D antenna. A vast majority of the dual polarization components are being mounted to the counterweights thus all of that hardware must be hoisted up into the radome . Left side of antenna . - PowerPoint PPT Presentation
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A Hardware Perspective
DUAL POLARIZATION UPGRADE
EXISTING WSR-88D ANTENNA
A vast majority of the dual polarization components are being mounted to the counterweights thus all of that hardware must be hoisted up into the radome.
LEFT SIDE OF ANTENNA
Major component added to the antenna counterweight is the RF Pallet.
View from rear of antenna
Antenna counterweight
RIGHT SIDE OF ANTENNA
Major component added is the Antenna Mounted Electronics assembly.- Receiver, BITE/Calibration, Processor, Cooler/Heater, Power Supply
CLOSE UP DIAGRAMS OF ANTENNA MOUNTED ELECTRONICS (AME) ASSEMBLY.
Assembly box is mounted on right side of antenna counterweights.
FRONT OF ANTENNA
All new complex feedhorn must be mounted to the front of the antenna to transmit and receive dual polarization signal.
Rearview of unmodified antenna
..with climate-controlled equipment pallet installed..
..second equipment pallet that divides the signal installed..
..requires new feedhorn and support struts..
First operational NEXRAD with Dual-Pol modification at Vance Air Force Base
Installation of Dual Polarization includes significant modification to the NEXRAD antenna, as well as software to process the Dual-Polarization data
REVIEWNEXRAD Dual Pol Modification
WSR-88D RADAR PRIOR TO UPGRADE
WSR-88D RADAR AFTER
UPGRADE
FINAL THOUGHTS• All of the waveguide (conduit for transmitting and
receiving signal) must be replaced and doubled.
• Hardware components installed in the radome weigh 400-700 pounds.
• All new software must be installed and tested.
• In short, this is the most significant upgrade to the WSR-88D since it was deployed in the mid to late 90’s.