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Title: Atmospheric millimetre wave propagation
Author: Ho, Ka-Leung
ISNI:       0000 0001 3579 307X
Awarding Body: University of London
Current Institution: University College London (University of London)
Date of Award: 1977
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The work described in this thesis is mainly confined to atmospheric propagation effects occuring in a town enviroment at a frequency of 36 GHz on a 4.1 Km link. Precipitation effects on a 110 GHz link on the same path have also been measured and are included. Measurements have been made on the amplitude scintillations and the results, under different atmospheric conditions, are compared with the theoretical predictions of Tatarski. Direct meteorological measurements of the important atmospheric parameters are described and are correlated with the effects occuring on the link, and the values of these parameters deduced from the behaviour of the radio signals. Measurements of signal attenuation due to'fog and snow have also been made and the study of some other anomalous scintillation phenomena are included. Long term statistics have been collected. Attempts have been made to verify the theoretical relation between the attenuation and rainfall rate at 36 and 110 GHz. A dual-frequency technique is used to investigate the validity of the Laws-Parsons raindrop size distribution. All the instrumentation and electronic processing used in this experiment are described.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available