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Weather Sensors > TDWR
Terminal Doppler Weather Radar (TDWR)The Federal Aviation Administration's (FAA) Terminal Doppler Weather Radar (TDWR) system detects and reports hazardous weather in and around airport terminal approach and departure zones. The TDWR identifies and warns air traffic controllers (ATCs) of low altitude wind shear hazards caused by microbursts and their associated gust fronts, in addition to reporting on precipitation intensities and providing advanced warning of wind shifts. The ATCs use the TDWR reports to warn pilots who are potentially affected by the hazardous weather patterns.
TSC performs analysis to examine the feasibility of providing TDWR coverage to satellite airports within the primary airport TDWR operational range:
- Satellite airport sites are identified for each TDWR location
- Satellite airport locations are examined for position within TDWR Hazardous Mode azimuth scan sector and within radar’s unambiguous range
- TDWR line-of-sight between radar and satellite airport location is analyzed
- TDWR Hazardous Mode elevation coverage is analyzed to determine level of microburst detection at satellite airport
- Microburst reflectivity and outflow estimates generated by TSC Wind Shear Measurement Prediction Model used in microburst detection and coverage analysis
- Velocity Estimation Accuracy modeled as a function of coverage height
