Characteristics of Atmospheric Noise from 1 to 100 KC

Watt, A. D.; Maxwell, E.

doi:10.1109/jrproc.1957.278476

Cited by 60 publications

(19 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The greatest diurnal, seasonal and regional variations are noted in the frequency region between 1 kc/s and 10 kc/s. This is also to be expected since this is the region of highest attenuation for the predominant waveguide modes [3,4] . The dip produced by this waveguide cutoff is seen to vary from a maximum of approximately 40 db to a minimum of less than 10 db.…”

Section: Instrumentationsupporting

confidence: 56%

Natural Noise Fields from 1 C/S to 100 KC/S

Maxwell¹,

Stone²

1962

View full text Add to dashboard Cite

Section: Instrumentationsupporting

confidence: 56%

Natural Noise Fields from 1 C/S to 100 KC/S

Maxwell¹,

Stone²

1962

View full text Add to dashboard Cite

“…Watt and Maxwell [1957] Hiss occurring practically anywhere between two balloons 1000 km apart would be received at similar amplitudes and burst-to-burst correlation would be high. At 4.5 kHz, and even for a sea path, the wave guide attenuation is very high even in the least attenuated mode and is strongly model dependent.…”

Section: Discussionmentioning

confidence: 99%

Longitudinal variation of mid‐latitude hiss from six long duration balloon flights

Dowden

Holzworth

1990

J. Geophys. Res.

View full text Add to dashboard Cite

The longitudinal variation of mid‐latitude hiss as measured on six balloons at latitudes of 35°S–55°S, shows a significant minimum at 70°E–80°E, about 1000 km east of the geomagnetic conjugate of the Soviet transmitter, UMS (17.1 kHz). It is suggested that the well documented pitch angle diffusion induced by the UMS signal removes the ability of the trapped electrons to maintain the amplification of the hiss to at least the reflection and re‐ducting losses (∼20 dB) at the ends of the echoing, ducted path. The eastward shift of the minimum from the conjugate of UMS is primarily caused by the time taken by the eastward drifting electrons to recover this ability, though the effect is enhanced by the east–west asymmetry in the propagation of hiss under the ionosphere.

show abstract

“…One of the earliest applications of the Fourier transform approach was made by Watt and Maxwell (1957). In the course of describing measurements of low frequency attenuation due to the earth, they made Fourier transforms of electric field waveforms recorded by Norinder (1954) and Florman (1955) and from them formed a composite spectrum; however few details were given regarding the wavef~m-s. Izter, T z y !~ (1963) reperted a cxcfti!…”

Section: Spectra Obtained By Fourier Transformmentioning

confidence: 99%

Review of measurements of the RF spectrum of radiation from lightning

Vine

1987

Meteorl. Atmos. Phys.

View full text Add to dashboard Cite

Characteristics of Atmospheric Noise from 1 to 100 KC

Cited by 60 publications

References 4 publications

Natural Noise Fields from 1 C/S to 100 KC/S

Natural Noise Fields from 1 C/S to 100 KC/S

Longitudinal variation of mid‐latitude hiss from six long duration balloon flights

Review of measurements of the RF spectrum of radiation from lightning

Contact Info

Product

Resources

About