A software upgrade for the FAA’s terminal Doppler weather radar (TDWR) systems at 43 high-capacity airports in the U.S. is set to improve the wind shear and gust front information that controllers and pilots receive during severe weather events. The “Spiral 2” enhancement, which is in software build testing now, follows a hardware upgrade that replaced legacy customized signal processing units at the 43 TDWRs with more powerful commercial off-the-shelf (COTS) units. ...


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