Longley-Rice model prediction inaccuracies in the UHF and VHF TV bands in mountainous terrain

Stylianos Kasampalis, Pavlos I. Lazaridis, Zaharias D. Zaharis, Aristotelis Bizopoulos, Lidija Paunovska, Spiridon Zettas, Ian A. Glover, Dimitrios Drogoudis, John Cosmas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

Coverage prediction is of prime importance for TV broadcasting. A classic model used for TV coverage prediction is the Longley-Rice ITM (Irregular Terrain Model). Other well-known multiple knife-edge diffraction models are the Epstein-Peterson, Deygout, and Giovaneli methods. In this paper, comparisons are presented between accurate field-strength measurements, taken by a Rohde & Schwarz FSH-3 portable spectrum analyzer using precision calibrated antennas and calculated results from the Longley-Rice model, and the multiple knife-edge models in conjunction with the 3-arc-second SRTM (Satellite Radar Topography Mission) terrain data. Calculations are limited to the main 2 knife-edges of the propagation path. The Longley-Rice model predicts received field strength accurately in most cases even in mountainous terrain with multiple diffracting obstacles in the VHF and UHF TV Bands. However, in some long distance fringe reception areas field-strength is underestimated by the Longley-Rice model, while it is accurately calculated by the multiple knife-edge diffraction models.

Original languageEnglish
Title of host publication2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015
PublisherIEEE Computer Society
Volume2015-August
ISBN (Electronic)9781479958658
DOIs
Publication statusPublished - 4 Aug 2015
Event10th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting - Ghent, Belgium
Duration: 17 Jun 201519 Jun 2015
Conference number: 10

Conference

Conference10th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting
Abbreviated titleBMSB 2015
CountryBelgium
CityGhent
Period17/06/1519/06/15

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    Kasampalis, S., Lazaridis, P. I., Zaharis, Z. D., Bizopoulos, A., Paunovska, L., Zettas, S., ... Cosmas, J. (2015). Longley-Rice model prediction inaccuracies in the UHF and VHF TV bands in mountainous terrain. In 2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015 (Vol. 2015-August). [7177272] IEEE Computer Society. https://doi.org/10.1109/BMSB.2015.7177272