ELF AND VLF ATMOSPHERIC NOISE

Various parameters of atmospheric noise have been measured over a wide frequency range (20 c/s to 50 kc/s) at a variety of geographic locations. Complete amplitude probability distributions were obtained as well as the average vertical electric field data, E(avg). Horizontal magnetic field data, H(a...

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Bibliographic Details
Main Authors: Maxwell,E. L., Stone,D. L.
Other Authors: DECO ELECTRONICS INC BOULDER COLO
Format: Text
Language:English
Published: 1964
Subjects:
(*ATMOSPHERICS
MEASUREMENT)
(*RADIOFREQUENCY INTERFERENCE
ATMOSPHERICS)
EXTREMELY LOW FREQUENCY
VERY LOW FREQUENCY
INSTRUMENTATION
PROBABILITY
LIGHTNING
PROPAGATION
ELECTRIC FIELDS
MAGNETIC FIELDS
Barrow
Point Barrow
Alaska
Online Access:http://www.dtic.mil/docs/citations/AD0428273
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0428273
Description
Summary:Various parameters of atmospheric noise have been measured over a wide frequency range (20 c/s to 50 kc/s) at a variety of geographic locations. Complete amplitude probability distributions were obtained as well as the average vertical electric field data, E(avg). Horizontal magnetic field data, H(avg), were also obtained. The amplitude probability distributions, APDs, provided an average to rms conversion factor that enabled E(avg) and H(avg) data to be converted to the more useful 6e9rms) and H(rms). Typical APDs are shown for Point Barrow, Alaska and Malta. Mean noise density values are given as a function of time block, season, and region and are compared with CCIR predictions. Standard deviations of the five minute averages are presented with probability plots of five minute averages. Finally, geographical variations are shown for data obtained over a wide latitude and longitude range. (Author)

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