Semi-empirical model for millimetre-wave vegetationattenuation rates
- 17 August 1995
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 31 (17) , 1507-1508
- https://doi.org/10.1049/el:19951000
Abstract
An improved empirical model of the attenuation rates due to propagation through vegetation at millimetre-wave frequencies is described. The measured vegetation attenuation rates of 38 GHz signals were fitted to a two-parameter model with a final slope of 0 dB/m, to give an improvement in fit over the current ITU recommendation. However, this final slope is not a typical characteristic and is not seen at other frequencies. A new three-parameter model has been developed, which may have a nonzero final slope, giving the model greater freedom and therefore a better fit to measured data at all frequencies.Keywords
This publication has 2 references indexed in Scilit:
- Measurements and predictions of attenuation and scatter of microwave signals by treesIEE Proceedings - Microwaves, Antennas and Propagation, 1994
- An Initial Critical Summary of Models for Predicting the Attenuation of Radio Waves by TreesPublished by Defense Technical Information Center (DTIC) ,1982