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Mobile satellite system fade statistics for shadowing and multipath from roadside trees at UHF and L-band

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2 Author(s)
J. Goldhirsh ; Appl. Phys. Lab., Johns Hopkins Univ., Laurel, MD, USA ; W. J. Vogel

Field tests related to planned mobile satellite systems (MSS) were performed, and results that add to the existing database of propagation measurements at L-band (1.5 GHz) are described. They are considered particularly useful in that propagation effects were studied systematically with repeated and controlled runs pertaining to different path elevation angles, road types, and path geometries defining shadowing and line-of-sight modes. In addition, simultaneous L-band and UHF measurements were performed for the purpose of establishing scaling factors applicable to previous UHF (870 MHz) results. The control of the experimental parameters was made possible by using a helicopter as the source platform and a mobile van which housed the receiver

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:37 ,  Issue: 4 )