Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method

Wali Samuel; Trust Christopher Oguichen; Steve Worgu

doi:doi:10.11648/j.ajsea.20170601.11

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Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method

Wali Samuel, Trust Christopher Oguichen, Steve Worgu

Published in American Journal of Software Engineering and Applications (Volume 6, Issue 1)

Received: 3 January 2017 Accepted: 10 January 2017 Published: 3 February 2017

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Abstract

In this paper, application of Epstein-Peterson method in the computation of a ten (10) multiple knife edge diffraction loss is presented for a 1 GHz microwave link. In the computation, each of the ten obstructions gave rise to a virtual hop which resulted in a knife edge diffraction loss. What is peculiar to the Epstein-Peterson method is how the virtual hops are identified or defined. The overall diffraction loss, according to the Epstein-Peterson method is the sum of the diffraction loss computed for each of the ten virtual hops. In the results, the highest LOS clearance height of 5.727273 m occurred in virtual hop 5 whereas the highest diffraction parameter of 0.333333 and the highest virtual hop diffraction loss of 8.908754dB occurred in virtual hop1. The lowest LOS clearance height of 0.4 m, the lowest diffraction parameter 0.029814 and the lowest virtual hop diffraction loss, 6.290874 dB occurred in virtual hop 9. In all, the overall effective diffraction loss for the 10 knife edge obstructions as computed by the Epstein-Peterson is 69.93384 dB.

Published in	American Journal of Software Engineering and Applications (Volume 6, Issue 1)
DOI	10.11648/j.ajsea.20170601.11
Page(s)	1-4
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Multiple Knife Edge, Diffraction Loss, Diffraction Parameter, Line of Sight, Clearance Height, Virtual Hop, Epstein-Peterson Method

References

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[3]	Zeng, D., Lu, G., & Zhang, R. (2015, October). Radiowave propagation loss measurement of different situated Knife-Edge problems and comparison with PO computing. In Microwave, Antenna, Propagation, and EMC Technologies (MAPE), 2015 IEEE 6th International Symposium on (pp. 40-43). IEEE.
[4]	Han, T., Kuang, Z., Wang, H., & Li, X. (2015, April). Study on the multiple diffraction for UWB signals under NLOS environment in WSNs. In 2015 International Conference on Intelligent Systems Research and Mechatronics Engineering. Atlantis Press.
[5]	Topcu, S., Goktas, P., Karasan, E., & Altintas, A. (2015, September). A new approach to diffraction modelling for line-of-sight (LOS) paths. In Antennas and Propagation in Wireless Communications (APWC), 2015 IEEE-APS Topical Conference on (pp. 696-699). IEEE.
[6]	Baldassaro, P. M. (2001). RF and GIS: Field Strength Prediction for Frequencies between 900 MHz and 28 GHz.
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[10]	Valtr, P., Pechac, P., & Grabner, M. (2015). Inclusion of Higher Order Diffracted Fields in the Epstein–Peterson Method. IEEE Transactions on Antennas and Propagation, 63 (7), 3240-3244.
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[12]	Bibb, D. A., Dang, J., Yun, Z., & Iskander, M. F. (2014, July). Computational accuracy and speed of some knife-edge diffraction models. In 2014 IEEE Antennas and Propagation Society International Symposium (APSURSI) (pp. 705-706). IEEE.
[13]	Kasampalis, S., Lazaridis, P. I., Zaharis, Z. D., Bizopoulos, A., Paunovska, L., Zettas, S., ... & Cosmas, J. (2015, June). 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 (pp. 1-5). IEEE.
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APA Style

Wali Samuel, Trust Christopher Oguichen, Steve Worgu. (2017). Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method. American Journal of Software Engineering and Applications, 6(1), 1-4. https://doi.org/10.11648/j.ajsea.20170601.11

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ACS Style

Wali Samuel; Trust Christopher Oguichen; Steve Worgu. Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method. Am. J. Softw. Eng. Appl. 2017, 6(1), 1-4. doi: 10.11648/j.ajsea.20170601.11

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AMA Style

Wali Samuel, Trust Christopher Oguichen, Steve Worgu. Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method. Am J Softw Eng Appl. 2017;6(1):1-4. doi: 10.11648/j.ajsea.20170601.11

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@article{10.11648/j.ajsea.20170601.11,
  author = {Wali Samuel and Trust Christopher Oguichen and Steve Worgu},
  title = {Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method},
  journal = {American Journal of Software Engineering and Applications},
  volume = {6},
  number = {1},
  pages = {1-4},
  doi = {10.11648/j.ajsea.20170601.11},
  url = {https://doi.org/10.11648/j.ajsea.20170601.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajsea.20170601.11},
  abstract = {In this paper, application of Epstein-Peterson method in the computation of a ten (10) multiple knife edge diffraction loss is presented for a 1 GHz microwave link. In the computation, each of the ten obstructions gave rise to a virtual hop which resulted in a knife edge diffraction loss. What is peculiar to the Epstein-Peterson method is how the virtual hops are identified or defined. The overall diffraction loss, according to the Epstein-Peterson method is the sum of the diffraction loss computed for each of the ten virtual hops. In the results, the highest LOS clearance height of 5.727273 m occurred in virtual hop 5 whereas the highest diffraction parameter of 0.333333 and the highest virtual hop diffraction loss of 8.908754dB occurred in virtual hop1. The lowest LOS clearance height of 0.4 m, the lowest diffraction parameter 0.029814 and the lowest virtual hop diffraction loss, 6.290874 dB occurred in virtual hop 9. In all, the overall effective diffraction loss for the 10 knife edge obstructions as computed by the Epstein-Peterson is 69.93384 dB.},
 year = {2017}
}

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TY  - JOUR
T1  - Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method
AU  - Wali Samuel
AU  - Trust Christopher Oguichen
AU  - Steve Worgu
Y1  - 2017/02/03
PY  - 2017
N1  - https://doi.org/10.11648/j.ajsea.20170601.11
DO  - 10.11648/j.ajsea.20170601.11
T2  - American Journal of Software Engineering and Applications
JF  - American Journal of Software Engineering and Applications
JO  - American Journal of Software Engineering and Applications
SP  - 1
EP  - 4
PB  - Science Publishing Group
SN  - 2327-249X
UR  - https://doi.org/10.11648/j.ajsea.20170601.11
AB  - In this paper, application of Epstein-Peterson method in the computation of a ten (10) multiple knife edge diffraction loss is presented for a 1 GHz microwave link. In the computation, each of the ten obstructions gave rise to a virtual hop which resulted in a knife edge diffraction loss. What is peculiar to the Epstein-Peterson method is how the virtual hops are identified or defined. The overall diffraction loss, according to the Epstein-Peterson method is the sum of the diffraction loss computed for each of the ten virtual hops. In the results, the highest LOS clearance height of 5.727273 m occurred in virtual hop 5 whereas the highest diffraction parameter of 0.333333 and the highest virtual hop diffraction loss of 8.908754dB occurred in virtual hop1. The lowest LOS clearance height of 0.4 m, the lowest diffraction parameter 0.029814 and the lowest virtual hop diffraction loss, 6.290874 dB occurred in virtual hop 9. In all, the overall effective diffraction loss for the 10 knife edge obstructions as computed by the Epstein-Peterson is 69.93384 dB.
VL  - 6
IS  - 1
ER  -

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Author Information

Wali Samuel

Department of Electrical/Electronic and Computer Engineering, University of Uyo, Uyo, Nigeria
Trust Christopher Oguichen

Department of Electrical/Computer Engineering, Port Harcourt Polytechnic, Rumuola, Port Harcourt, Nigeria
Steve Worgu

Department of Electrical/Computer Engineering, Port Harcourt Polytechnic, Rumuola, Port Harcourt, Nigeria

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Plain Text BibTeX RIS

APA Style

Wali Samuel, Trust Christopher Oguichen, Steve Worgu. (2017). Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method. American Journal of Software Engineering and Applications, 6(1), 1-4. https://doi.org/10.11648/j.ajsea.20170601.11

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ACS Style

Wali Samuel; Trust Christopher Oguichen; Steve Worgu. Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method. Am. J. Softw. Eng. Appl. 2017, 6(1), 1-4. doi: 10.11648/j.ajsea.20170601.11

Copy | Download

AMA Style

Wali Samuel, Trust Christopher Oguichen, Steve Worgu. Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method. Am J Softw Eng Appl. 2017;6(1):1-4. doi: 10.11648/j.ajsea.20170601.11

Copy | Download

@article{10.11648/j.ajsea.20170601.11,
  author = {Wali Samuel and Trust Christopher Oguichen and Steve Worgu},
  title = {Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method},
  journal = {American Journal of Software Engineering and Applications},
  volume = {6},
  number = {1},
  pages = {1-4},
  doi = {10.11648/j.ajsea.20170601.11},
  url = {https://doi.org/10.11648/j.ajsea.20170601.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajsea.20170601.11},
  abstract = {In this paper, application of Epstein-Peterson method in the computation of a ten (10) multiple knife edge diffraction loss is presented for a 1 GHz microwave link. In the computation, each of the ten obstructions gave rise to a virtual hop which resulted in a knife edge diffraction loss. What is peculiar to the Epstein-Peterson method is how the virtual hops are identified or defined. The overall diffraction loss, according to the Epstein-Peterson method is the sum of the diffraction loss computed for each of the ten virtual hops. In the results, the highest LOS clearance height of 5.727273 m occurred in virtual hop 5 whereas the highest diffraction parameter of 0.333333 and the highest virtual hop diffraction loss of 8.908754dB occurred in virtual hop1. The lowest LOS clearance height of 0.4 m, the lowest diffraction parameter 0.029814 and the lowest virtual hop diffraction loss, 6.290874 dB occurred in virtual hop 9. In all, the overall effective diffraction loss for the 10 knife edge obstructions as computed by the Epstein-Peterson is 69.93384 dB.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Computation of 10 Knife Edge Diffraction Loss Using Epstein-Peterson Method
AU  - Wali Samuel
AU  - Trust Christopher Oguichen
AU  - Steve Worgu
Y1  - 2017/02/03
PY  - 2017
N1  - https://doi.org/10.11648/j.ajsea.20170601.11
DO  - 10.11648/j.ajsea.20170601.11
T2  - American Journal of Software Engineering and Applications
JF  - American Journal of Software Engineering and Applications
JO  - American Journal of Software Engineering and Applications
SP  - 1
EP  - 4
PB  - Science Publishing Group
SN  - 2327-249X
UR  - https://doi.org/10.11648/j.ajsea.20170601.11
AB  - In this paper, application of Epstein-Peterson method in the computation of a ten (10) multiple knife edge diffraction loss is presented for a 1 GHz microwave link. In the computation, each of the ten obstructions gave rise to a virtual hop which resulted in a knife edge diffraction loss. What is peculiar to the Epstein-Peterson method is how the virtual hops are identified or defined. The overall diffraction loss, according to the Epstein-Peterson method is the sum of the diffraction loss computed for each of the ten virtual hops. In the results, the highest LOS clearance height of 5.727273 m occurred in virtual hop 5 whereas the highest diffraction parameter of 0.333333 and the highest virtual hop diffraction loss of 8.908754dB occurred in virtual hop1. The lowest LOS clearance height of 0.4 m, the lowest diffraction parameter 0.029814 and the lowest virtual hop diffraction loss, 6.290874 dB occurred in virtual hop 9. In all, the overall effective diffraction loss for the 10 knife edge obstructions as computed by the Epstein-Peterson is 69.93384 dB.
VL  - 6
IS  - 1
ER  -

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