Spatio-temporal soil moisture measurement with Wireless Underground Sensor Networks

Xin Dong, Mehmet C. Vuran

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

19 Scopus citations

Abstract

In this paper, the estimation distortion of distributed soil moisture measurement using Wireless Underground Sensor Networks (WUSNs) is investigated. The main focus of this paper is to analyze the impact of the environment and network parameters on the estimation distortion of the soil moisture.More specifically, the effects of rainfall, soil porosity, and vegetation root zone are investigated by exploiting a rainfall model, in addition to the effects of sampling rate, network topology, and measurement signal noise ratio. Spatio-temporal correlation is characterized to develop a measurement distortion model with respect to these factors. The evaluations reveal that with porous soil and shallow vegetation roots, high sampling rate is required for sufficient accuracy. In addition, the impact of rainfall on the estimation distortion has also been investigated. In a storm, which carries on a large area and lasts for a long time, the estimation distortion is decreased because of the increase in spatial correlation. Moreover, only few closest sensors are needed to estimate the values of an interested location. These findings are utilized to guide the design of WUSNs for soil moisture measurement to reduce the density of network and the sampling rate of the sensors but at the same time maintain the performance of the system. Moreover, guidelines for designing WUSNs for soil moisture measurement are provided. To the best of our knowledge, this is the first work that establishes tight relations between environmental effects and distributed measurement in WUSNs.

Original languageEnglish (US)
Title of host publication9th IFIP Annual Mediterranean Ad Hoc Networking Workshop, MED-HOC-NET 2010
DOIs
StatePublished - 2010
Event9th IFIP Annual Mediterranean Ad Hoc Networking Workshop, MED-HOC-NET 2010 - Juan Les Pins, France
Duration: Jun 23 2010Jun 25 2010

Publication series

Name9th IFIP Annual Mediterranean Ad Hoc Networking Workshop, MED-HOC-NET 2010

Other

Other9th IFIP Annual Mediterranean Ad Hoc Networking Workshop, MED-HOC-NET 2010
Country/TerritoryFrance
CityJuan Les Pins
Period6/23/106/25/10

ASJC Scopus subject areas

  • Computer Networks and Communications

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