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SUMMARY:Atmospheric Structure Revealed by Refraction of Routine Radio Tran
 smissions from Civil Aircraft. - Malcolm Kitchen\, The MET Office
DTSTART:20180206T130000Z
DTEND:20180206T140000Z
UID:TALK100849@talks.cam.ac.uk
CONTACT:Dr Vivien Gruar
DESCRIPTION:A new method is envisaged for obtaining information on the str
 ucture of temperature and humidity in the atmosphere. Radio waves transmit
 ted by aircraft suffer refraction (bending)\, especially when the aircraft
  is distant and close to the horizon. It should be possible to measure the
  angle of arrival (AoA) of the transmissions using an interferometer insta
 lled on a tower. Knowledge of the exact location of the aircraft then enab
 les the bending due to the atmosphere to be calculated. Before any trial o
 f the technique can go ahead\, we need to model the data in to understand 
 the sensitivity to changes in the atmospheric structure and the required a
 ccuracy for the AoA measurement. The initial data modelling would involve 
 ray-tracing using synthetic or idealised data for aircraft locations and a
 tmospheric structure.\n
LOCATION:MR3 Centre for Mathematical Sciences
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