Optimum Antenna Spacing for Diversity in Meteor Burst Communications Systems,
ROYAL AEROSPACE ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)
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Temperate latitude meteor burst MB space diversity measurements, using cross correlation analysis of 37 MHz signals scattered over an 800 km path, are reported. Signals of duration 0.75 s, received on antennas separated by 5 Lambda, 10 Lambda and 20 lambda, are investigated using 6 days of data collected over a 9-day period during February 1990. Signal decorrelation is shown to be achieved by an antenna separation of 5 Lambda and there is no apparent variation in average cross correlation coefficient, for antenna separations between 5 Lambda and 20 Lambda for any of the signal categories examined. We discuss in some detail previous diversity studies by Bartholome 1 and Ladd 2.
- Radio Communications
- Radio Countermeasures
- Radiofrequency Wave Propagation