Reflection and ghosts in a multitower environment

Author

Vaughan, T. ; McClure, H.

Author_Institution

Micro Commun. Inc., Manchester, NH, USA

Volume

35

Issue

1

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

8

Lastpage

22

Abstract

The magnitude of reflections in a multitower TV environment and their delay in microseconds are calculated. The objectives of the study were to determine: (1) the principal source of ghosting on Mt. Wilson Calif.; (2) how the reflection can be reduced: (3) what the optimum antenna/tower characteristics are for a novel installation; (4) the effect of polarization on ghosts; and (5) the impact of HDTV (high-definition television) on the antenna/tower system test methods and test program are presented as well as a detailed analysis of the test result. Over 500 measurements were made at forty different locations. Some conclusions and recommendations for new installations are provided.<>

Keywords

electromagnetic wave polarisation; electromagnetic wave reflection; poles and towers; radiowave propagation; television antennas; television interference; television receivers; television transmitters; HDTV; Mt. Wilson; delay; ghosts; high-definition television; measurements; microseconds; multitower TV environment; polarization; reflections; test methods; test program; Cities and towns; Delay; Directive antennas; HDTV; Monitoring; Optical reflection; Poles and towers; Space technology; TV; Testing;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.18761

Filename

18761