Items Provided with IRIS/TDWR Option
The optional IRIS/SHEAR package includes features for terminal Doppler weather radar applications:
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SHEAR Product
The WARN product run on a radial SHEAR product is used for microburst detection.
See SHEAR: Wind Shear.
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SLINE Product
Detects wind shifts associated with gust fronts and cold fronts. Can use radial, azimuthal or combined radial and azimuthal shear.
See SLINE: Shear Line.
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Ribbon Display
Ribbon display terminals (RBDT's) are large format text-only displays that are used to display and signal alerts to controllers. IRIS supports US FAA-style Dale RBDT's which are serial line hardware devices and Virtual RBDT's (vribbons) which are X-Window displays.
See Ribbon Displays.
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TDWR/LLWAS Integrator
Uses the US FAA algorithm to integrate information from IRIS shear warning products and LLWAS (low-level wind shear alert system) to generate TDWR products for output to standard US FAA-style ribbon displays. Note that an LLWAS system is not required.
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Runway Utility
Graphical utility for selecting the active runways that are in use. The information is used by the TDWR/LLWAS Integrator to select for which runway corridors alerts are issued to the RBDT's.
See Runways Utility.
These features, combined with all the standard features of IRIS, provide controllers with timely, concise information concerning wind shear and other weather phenomena that can affect air terminal operations.
The TDWR used by the US FAA is based on technology circa 1985. Since this time, computer speeds have increased dramatically. There have also been changes, in algorithms, networking standards and user interface. The goal of the IRIS/TDWR is to take the best elements of the TDWR designs and implement them in the context of today's technology.
Vaisala does not warrant that the IRIS/TDWR option will function in accordance with US FAA Specifications.