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Mining Publication: Development of a Phase Difference of Arrival Technique for Location of Trapped Miners
Keywords: Electronic tracking systems Rescue Signalling
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: September 1983
Authors: WG Hopkins, RH Church, WE Webb
Open File Report - September 1983
Download PDF Document (2.10 MB)
NIOSHTIC2 Number: 10003398
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, OFR-46-84, :1-35
The development of systems for location of miners who have become entrapped following a mine disaster is one of the major research goals in the Bureau of Mines. Current technologies for locating trapped miners from the surface are either simple direction finders or time difference pulse systems that have accuracy limitations. Developing technologies using full-vector field measurements at several receiving points are currently being studied. The necessity of measuring field strength with great accuracy can be a drawback in these systems. However, a system that operates with continuous-wave radio signals, with phase differences that can be measured accurately even in weak signal conditions, would greatly improve the location accuracy. Comparison of this system with existing technology indicates a favorable accuracy-complexity ratio for the phase difference of arrival technique.
Image of publication Development of a Phase Difference of Arrival Technique for Location of Trapped MinersOpen File Report - September 1983
Download PDF Document (2.10 MB)
NIOSHTIC2 Number: 10003398
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, OFR-46-84, :1-35
See Also
Analytical Investigations of Electromagnetic Location Schemes Relevant to Mine Rescue: Part I - Executive Summary; Part II - Collected Reprints - Analytical Investigations of Electromagnetic Location Schemes Relevant to Mine Rescue
Development of a Seismic System for Locating Trapped Miners
A Feasibility Study for the Detection of Weak Electromagnetic Signal/ Bursts With Hard-Limited Arrays
Mine Rescue Training Facility Inventory - Compendium of Ideas to Improve US Coal Mine Rescue Training
Passive Fiber Optic System for Locating, Tracking, and Communicating with Personnel in Coal Mines
Performance and Safety Investigation of Emergency Backup Batteries and Battery Charging Systems for Underground Mining Applications
Performance Comparison of Rescue Breathing Apparatus
Refuge Alternatives in Underground Coal Mines
Refuge Chamber Deployment and Occupancy Status During Mine Emergency Situations
Waveform Generator-Package and Receiver: Mancarried and Helicopter Receiver Portion
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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