Wind Shear
Detection Systems

Wind shear is a change in wind speed and/or direction over a short distance. In aviation, low-level wind shear and microbursts pose a serious threat to aircraft during take-off and landing. Today, there are two main types of wind shear alert systems on the market.

The ground-based LLWAS (Low-Level Wind Shear Alert System) use data from anemometers installed within and around the aerodrome. The data is processed via a sophisticated LLWAS algorithm to calculate the resulting wind shear and to derive the alerts. Different software packages allow convenient control of the LLWAS system and user-friendly display of wind shear alerts.

Wind shear can also be detected via a weather radar and a scanning Doppler-lidar. When combined, both sensors make up an all-weather wind shear detection system. The lidar system provides wind data in no-rain weather situations while the weather radar performs best in the presence of rain. Dedicated software packages process data from both systems, combine wind shear information and display alerts.

Wind Shear Detection Products and Solutions

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