The use of automatic dependent surveillance-broadcast for meteorological monitoring is explored. Although originally developed for surveillance, the data that the system provides can be used to estimate wind, pressure, and temperature profiles. Two methods to estimate wind are presented. These make use of velocity vector information from a single aircraft or multiple aircraft, respectively. Air pressure is derived from the barometric altitude and height above the World Geodetic System 1984 ellipsoid. From this pressure estimate the temperature is estimated, using the hydrostatic equilibrium and the ideal gas law. To validate the methods, automatic dependent surveillance-broadcast data were collected over a 100 day period and the resulting estimates compared to Global Forecast System forecasts. Estimating wind using information from one aircraft resulted in a low number of estimates. When using data from multiple aircraft, more accurate wind estimates could be produced, at fixed time intervals and at altitude intervals. The mean absolute errors for wind speed and direction estimates were 9.2 kt and 29.0 deg, respectively. The mean errors for pressure and temperature estimates were hPa and 0.8 K, respectively. The mean absolute errors for the pressure and temperature estimates were 0.8 hPa and 2.0 K, respectively.
Using Automatic Dependent Surveillance-Broadcast for Meteorological Monitoring
Journal of Aircraft ; 50 , 1 ; 249-261
2012-12-12
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Using Automatic Dependent Surveillance-Broadcast for Meteorological Monitoring
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