Propagation of EM signals in underground mines.

Cory, Terry S.

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Propagation of EM signals in underground mines.

Published Date:

September 1977

Language:

English

[PDF-3.08 MB]

Details:

Personal Author:

Cory, Terry S.

Corporate Authors:

United States. Bureau of Mines. ; Collins Commercial Telecommunications Group. Circuit Switching Systems Division. ;

Description:

"This report is a comprehensive summary of the results of the propagation measurements program conducted for the Bureau of Mines. Data were gathered in the medium frequency (mf) range from a cross sample of six mines representative of the industry having typical wireless requirements. From the data that were gathered, a logical method of data reduction is presented that culminates in a set of average attenuation characteristics for all mines visited. These characteristics define a typical mf wireless system when the communication range requirements are known. Direct through-the- earth propagation and the range enhancement mechanism due to coupling on-and-off conductors are evaluated and related to the planning of a typical wireless mf communications system." - NIOSHTIC-2

NIOSHTIC no. 19770901

Subject:

[+]

Document Type:

Report

Funding:

H00366028

Collection(s):

National Institute for Occupational Safety and Health

Main Document Checksum:

[+]

Supporting Files:

No Additional Files

No Related Documents.

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