Simple Methods for Computing Tropospheric and Ionospheric Refractive Effects on Radio Waves

Weisbrod, Steven R.; Anderson, L. J.

doi:10.1109/jrproc.1959.287112

Cited by 19 publications

(11 citation statements)

References 4 publications

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“…However, the bulk of the data were obtained from Weisbrod and Anderson. 17 Ionospheric refraction is very small for u.h.f. signal rays from ground to outer space, and can be neglected in comparison to the tropospheric effect for frequencies above 100 Mc/s.…”

Section: Refractionmentioning

confidence: 99%

Communications at megamile ranges

Hansen

Stephenson

1961

Journal of the British Institution of Radio Engineers

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Megamile communications call for the fullest use of advanced modern technology. This paper surveys the design of a deep-space communication system. The basic constraints and capabilities of a low-noise ground receiving system are covered in detail, including antenna temperature contributions from galactic noise, tropospheric and ionospheric attenuation, and earth radiation through antenna side lobes. Low-noise preamplifiers, large high-gain antennas, and narrow-band phase-lock receivers are also considered. Digital biphase modulation, used in Pioneer V, is compared with more sophisticated bi-orthogonal coding systems. Both types of coding systems are compared with error rate as a parameter, with the ideal error-free Shannon limit. The design of Pioneer V and its record of achievement are described. Included are explanations of the coherent transponder within the spacecraft, and of the command transmitter and telemetry reception equipment at the ground stations.

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Section: Refractionmentioning

confidence: 99%

Communications at megamile ranges

Hansen

Stephenson

1961

Journal of the British Institution of Radio Engineers

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“…The purpose of this paper is to consider departures of n structure from normal, as specified by (2), th e effect of these departures upon ray refraction, and to present a n ew m ethod for calculating 7 based upon th ese departures which will differ from other approximate methods already in th e literature [1,2,5,12,18,19,20].…”

Section: T = -mentioning

confidence: 99%

On the calculation of the departures of radio wave bending from normal

Bean¹,

Dutton²

1960

J. RES. NATL. BUR. STAN. SECT. D. RAD. PROP.

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The calculation of non normal tropospheric bending of radio waves is t r eatcd in terms of a reduced-to-sea-level value of the refracti ve ind ex. Tills method emphasizes d epartures of bending from t he ave rage bending for t he United States and cons ists of visualizing ray bending as consistin g of t wo p ar ts ; an" average" component and a" d eparture-from-average" compon ent . The "average" compon en t comprises most of the bending and is obtain ed accurately from refraction tabul ations while t he component du e to d ep artures is easil y obtaill ed by graphical means .

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“…In the presence of layers where the N-gradient is stronger than standard, however, the bending error can be increased considerably. If one has a refractivity profile, the radar elevation angle error maybe determined quite accurately, according toWeisbrod and Anderson [26], in the following way:…”

Section: Elevation Angle Errormentioning

confidence: 99%

Meteorological Aspects of Radio-Radar Propagation

VA¹

1960

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Simple Methods for Computing Tropospheric and Ionospheric Refractive Effects on Radio Waves

Cited by 19 publications

References 4 publications

Communications at megamile ranges

Communications at megamile ranges

On the calculation of the departures of radio wave bending from normal

Meteorological Aspects of Radio-Radar Propagation

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