Analysis of Airborne VHF Incidental Noise over Metropolitan Areas-Part II: Horizontal Dipole Antenna

Skomal, Edward N.

doi:10.1109/temc.1975.303390

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Few exceptions in the literature to the "fixed site" measurement concept can be found. The work of Spaulding et al (1971), and Spaulding and Disney (1974), as well as a series of airborne measurements over major urban areas (Cudak et al, 1991;Ploussios, 1968;Skomal, 1969;1975;Roy, 1981) appear to be the only exceptions. The airborne measurements indicated that noise power was smooth (on the several kilometer scale, when measured at sufficient altitude) and approximately symmetrical about the centroid of the overflown urban area and that intentional emissions from urban areas were detectable at distances of a few hundred kilometers (again, dependent upon altitude) for airborne measurements.…”

Section: Introductionmentioning

confidence: 99%

Street‐scale mapping of urban radio frequency noise at very high frequency and ultra high frequency

Breton¹,

Haedrich²,

Kamrath³

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Street‐scale mapping of urban radio frequency noise at very high frequency and ultra high frequency

Breton¹,

Haedrich²,

Kamrath³

et al. 2020

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“…The work of Spaulding et al. (), and Spaulding and Disney (), as well as a series of airborne measurements over major urban areas (Cudak et al., ; Ploussios, ; Skomal, ; ; Roy, ) appear to be the only exceptions. The airborne measurements indicated that noise power was smooth (on the several kilometer scale, when measured at sufficient altitude) and approximately symmetrical about the centroid of the overflown urban area and that intentional emissions from urban areas were detectable at distances of a few hundred kilometers (again, dependent upon altitude) for airborne measurements.…”

Section: Introductionmentioning

confidence: 99%

Street‐Scale Mapping of Urban Radio Frequency Noise at Very High Frequency and Ultra High Frequency

et al. 2019

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Modern measurement campaigns of man-made radio frequency (RF) noise have reported results from fixed locations that are assumed to be representative of the surroundings. Models derived from these measurements include parameters to express the variability in time and in space over very large distances (i.e., differences between cities). Despite the rapidly evolving mixture of noise sources, especially in modern urban environments, spatial variation of RF noise power at the scale of streets and blocks is essentially unknown in the very high frequency and ultra high frequency bands. Using a portable calibrated noise measurement system of our design, RF noise was recorded over a 1-MHz bandwidth for frequencies of 142.0, 246.5, and 972 MHz. Noise surveys were conducted during daytime working hours in two different neighborhoods within Boston, Massachusetts, USA, with each survey transiting a fixed, several kilometer long route, repeated twice to enable separation of temporal from spatial variability. Significant and spatially repeatable variations in median power, peak power, and voltage deviation were observed over distances of tens to hundreds of meters, dependent upon the measurement frequency. The observed spatial patterns of median and peak power appear to be repeatable on timescales of hours to weeks, and likely beyond, suggesting that these noise patterns are persistent features of the urban environment.

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0.4- to 10-GHz Airborne Electromagnetic-Environment Survey of United States Urban Areas

Taylor

Hill

1976

IEEE 1976 International Symposium on Electromagnetic Compatibility

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Analysis of Airborne VHF Incidental Noise over Metropolitan Areas-Part II: Horizontal Dipole Antenna

Cited by 3 publications

References 10 publications

Street‐scale mapping of urban radio frequency noise at very high frequency and ultra high frequency

Street‐scale mapping of urban radio frequency noise at very high frequency and ultra high frequency

Street‐Scale Mapping of Urban Radio Frequency Noise at Very High Frequency and Ultra High Frequency

0.4- to 10-GHz Airborne Electromagnetic-Environment Survey of United States Urban Areas

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