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

Author

Goldhirsh, Julius ; Vogel, Wolfhard J.

Author_Institution

Appl. Phys. Lab., Johns Hopkins Univ., Laurel, MD, USA

Volume

37

Issue

4

fYear

1989

fDate

4/1/1989 12:00:00 AM

Firstpage

489

Lastpage

498

Abstract

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

Keywords

fading; mobile radio systems; radiowave propagation; satellite relay systems; 1.5 GHz; 870 MHz; L-band; UHF; fade statistics; line-of-sight modes; mobile satellite systems; multipath; path elevation angles; path geometries; propagation measurements; radiowave propagation; roadside trees; scaling factors; shadowing; Control systems; Geometry; Performance evaluation; Roads; Satellites; Shadow mapping; Spatial databases; Statistics; System testing; UHF measurements;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.24169

Filename

24169