International Symposium on Antennas and Propagation
Multipath Signal Variation Characteristics of 10 GHz Fixed Terrestrial Multi-Receiver Path
Martin Grabner, Vaclav Kvicera, Pavel Pechac, Pavel Valtr,
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Multipath fading due to atmospheric refraction belongs among the adverse propagation effects that impair the error performance and availability of terrestrial fixed microwave links. In the past, some experiments were conducted focusing on the research of waveguide layer effects on electromagnetic wave propagation in the troposphere (e.g. , , ). The statistical properties of the environment between the transmitter and the receiver were derived by means of the received signal level on terrestrial radio links. The other possibility of studying those adverse atmospheric effects is to measure the physical parameters of the atmosphere directly (eg. , ). In this paper a new propagation experiment is described where received signal level fluctuations are measured on the terrestrial path in 10 GHz band and atmospheric refractivity is measured simultaneously at the receiver end. During the first months of the experiment, several multipath fading events has been observed. Signal variation characteristics were calculated from the measured data. The characteristics show a typical statistical and spectral behavior of received signal strength fluctuations during the multipath events.