Next Article in Journal
Enhanced IoT-Based End-To-End Emergency and Disaster Relief System
Previous Article in Journal
RedEdge: A Novel Architecture for Big Data Processing in Mobile Edge Computing Environments
Article

A New Approach to Estimating the Path Loss in Underground Wireless Sensor Networks

School of Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
*
Author to whom correspondence should be addressed.
J. Sens. Actuator Netw. 2017, 6(3), 18; https://doi.org/10.3390/jsan6030018
Received: 5 July 2017 / Revised: 31 July 2017 / Accepted: 4 August 2017 / Published: 17 August 2017
Unlike terrestrial Wireless Sensor Networks (WSNs), communication between buried nodes in WUSNs happens through the ground. Due to the complexity of soil, accurate estimation of the underground signal attenuation is challenging. Existing path loss models mainly rely on semi-empirical and empirical mixing models for calculating the dielectric properties of the soil. In this paper, two existing models for estimating the path loss in soil (i.e., the CRIM-Fresnel and Modified-Friis models) are compared with measurements obtained at three locations. In addition, an improved method is proposed for estimating the path loss based on a new approach for calculating the dielectric properties of soil from Time Domain Reflectometry (TDR) measurements. The proposed approach calculates the complex permittivity values from TDR waveform based on a new modified method and subsequently use them as inputs into the Modified-Friis model. The results from the field trials were compared with the proposed method and the existing models. The results of this comparison showed that the proposed estimation technique provides a better estimation of Radio Frequency (RF) attenuation than the existing models. It also eliminates the need to take samples back to the laboratory by providing in situ calculation of attenuation based on TDR. View Full-Text
Keywords: Wireless Underground Sensor Networks (WUSN); Time Domain Reflectometry (TDR); Path Loss; RF attenuation Wireless Underground Sensor Networks (WUSN); Time Domain Reflectometry (TDR); Path Loss; RF attenuation
Show Figures

Figure 1

MDPI and ACS Style

Sadeghioon, A.M.; Chapman, D.N.; Metje, N.; Anthony, C.J. A New Approach to Estimating the Path Loss in Underground Wireless Sensor Networks. J. Sens. Actuator Netw. 2017, 6, 18. https://doi.org/10.3390/jsan6030018

AMA Style

Sadeghioon AM, Chapman DN, Metje N, Anthony CJ. A New Approach to Estimating the Path Loss in Underground Wireless Sensor Networks. Journal of Sensor and Actuator Networks. 2017; 6(3):18. https://doi.org/10.3390/jsan6030018

Chicago/Turabian Style

Sadeghioon, Ali M.; Chapman, David N.; Metje, Nicole; Anthony, Carl J. 2017. "A New Approach to Estimating the Path Loss in Underground Wireless Sensor Networks" J. Sens. Actuator Netw. 6, no. 3: 18. https://doi.org/10.3390/jsan6030018

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop