Results 1 - 10 of 41

• Advanced Tutorial on Wireless Communication and Electronic Tracking: Introduction
  5/9/2019 - Training materials
  This tutorial provides an advanced discussion of the available CT technologies, operating characteristics and general system performance considerations with descriptions of specific uses for primary and secondary communications.
• Basic Tutorial on Wireless Communication and Electronic Tracking: Technology Overview
  2/6/2013 - Training materials
  This tutorial provides a brief overview of CT systems intended to meet the needs of people who require a basic understanding of the distinguishing features and operations of different CT systems.
• Advanced Tutorial on Wireless Communication and Electronic Tracking: Communication System Performance
  5/9/2019 - Training materials
  Section 2 of the OMSHR advanced tutorial on wireless communication and electronic tracking covering communication system performance.
• Electromagnetic Noise Data Acquisition for the Evaluation of TTE Communications in Coal Mines
  4/8/2019 - Contracts and cooperative agreements
  A contract to improve the performance of TTE radio systems intended for use in coal mine emergency communications between the mine and the surface.
• Simulation and Measurement of Through-the-Earth, Extremely Low-Frequency Signals Using Copper-Clad Steel Ground Rods
  9/1/2017 - Peer reviewed journal articles
  A paper presenting the simulation and measurement results of recent NIOSH research aimed at investigating current injection at extremely low-frequency, and in particular, ground contact impedance.
• Mathematical Modeling and Measurement of Electric Fields of Electrode-Based Through-the-Earth (TTE) Communication
  6/1/2017
  A study using a mathematical model of subsurface electric fields and a prototype electrode-based TTE system to characterize the factors that will affect electric field distribution.
• Low-Frequency Electromagnetic Noise Cancelling Antenna System
  11/22/2016 - Interagency agreements
  An interagency agreement to improve signal-to-noise in TTE receivers. The aim is to use existing transmitters that are not "intrinsically safe" to provide a reference signal from underground.
• Magneto-Inductive TTE Communications
  7/19/2016 - Contracts and cooperative agreements
  A contract to fabricate and test through-the-earth communication devices in an underground mine.
• A Magnetic Communication System for Use in Mine Environments
  7/19/2016 - Contracts and cooperative agreements
  A contract to develop and demo a two-way, through-the-earth communication system for mines that applies state-of-the-art communications technologies to overcome subterranean wireless communication challenges while meeting industrial safety standards.
• Magnetic Communication System (MCS)
  7/19/2016 - Contracts and cooperative agreements
  A contract to enhance key features of the through-the-earth prototype previously developed to improve its usability, investigate design changes to comply with mine safety standards, ruggedize the hardware, and demonstrate performance at coal mine sites.