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Time and amplitude statistics for electromagnetic noise in mines.

Authors
Kanda-M
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract No. H0133005, :1-53
NIOSHTIC No.
10001383
Abstract
The time and amplitude statistics necessary to adequately describe electromagnetic (EM) noise in mines are illustrated through computer software techniques. They are 1) Allan Variance Analyses (AVA), 2) Interpulse Spacing Distributions (ISD), 3) Pulse Duration Distributions (PDD), 4) Average Crossing Rates (ACR), and 5) Amplitude Probability Distribution (APD). These statistics are illustrated using data taken from a rather large store of raw analog data recorded in operational mines. The curves generated for the illustrations characterize the noise environment in the mines from which the corresponding data were taken, and should aid in the design of reliable communication systems for such mines.
Keywords
Mining-industry; Electromagnetic-energy; Electromagnetic-fields; Electromagnetic-interference; Electromagnetic-radiation; Statistical-analysis; Underground-mining; Radio-waves
Publication Date
19740101
Document Type
CP; Final Contract Report
Funding Type
Contract
Fiscal Year
1974
NTIS Accession No.
COM-741-1450
NTIS Price
A05
Identifying No.
OFR-40-75; Contract-H0133005
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract No. H0133005
State
PA; CO
Performing Organization
National Bureau of Standards
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