A comprehensive set of propagation experiments was performed using the Olympus satellite 12, 20, and 30 GHz beacons. This set of experiments is unique in North America because of simultaneous reception of signals spanning the Ku- and Ka-bands from the same orbital slot, which permits direct inference of the frequency behavior of signal variations. The elevation angle from the receiving site in Blacksburg, VA, to the satellite was 14 degrees. Beacon, radiometric, and weather data for one year were analyzed. The statistical results for rain rate, beacon attenuation, attenuation ratios, radiometrically derived attenuation, fade duration and fade slope are presented. They are important to the design of Ku- and Ka-band satellite communication systems. The beacon attenuation results include cumulative statistics for attenuation with respect to free space and with respect to clear air. Attenuation ratio data are presented using attenuation with respect to clear air to focus on rain effects. Instantaneous attenuation ratios computed from instantaneous beacon levels were found to be nearly identical to statistical attenuation ratios obtained from cumulative attenuation statistics at each frequency. >
[1]
Warren L. Stutzman,et al.
A simple rain attenuation model for earth‐space radio links operating at 10–35 GHz
,
1986
.
[2]
W. Stutzman,et al.
Microscale diversity in satellite communications
,
1993
.
[3]
G. Brussaard,et al.
Propagation research in Europe using the OLYMPUS satellite
,
1993
.
[4]
Preliminary results on scintillation intensity frequency scaling from the Virginia Tech OLYMPUS experiment
,
1992,
IEEE Antennas and Propagation Society International Symposium 1992 Digest.
[5]
W. L. Stutzman,et al.
Use of radiometers in atmospheric attenuation measurements
,
1994
.
[6]
W. L. Stutzman,et al.
Correction of satellite beacon propagation data using radiometer measurements
,
1994
.