Corpus ID: 18990068

Genesis of the 1000-Foot Arecibo Dish

@article{Cohen2009GenesisOT,
  title={Genesis of the 1000-Foot Arecibo Dish},
  author={MARSHALL H. Cohen},
  journal={Journal of Astronomical History and Heritage},
  year={2009},
  volume={12},
  pages={141-152}
}
The giant radar/radio astronomy dish near Arecibo, Puerto Rico, was conceived by William E. Gordon in early 1958 as a back-scattering radar system to measure the density and temperature of the Earth’s ionosphere up to a few thousand kilometers. Gordon calculated the required size of the antenna by using the Thomson cross-section for scattering by the electrons, and assuming that the elementary scattered waves would be incoherent. During the summer and autumn of 1958 Gordon led a study group… Expand

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References

SHOWING 1-10 OF 78 REFERENCES
Scattering of radio waves by electrons above the ionosphere
Gordon [1958] has suggested the use of radar scattering from the electrons in the ionosphere and at greater altitude as a tool for measuring temperature and electron density as a function ofExpand
A Radar Determination of the Rotation of the Planet Mercury
DURING the recent inferior conjunction of the planet Mercury in April, 1965, radar observations were obtained by the Arecibo Ionospheric Observatory in Puerto Rico (operated by Cornell UniversityExpand
On Some Direct Evidence for Downward Atmospheric Reflection of Electric Rays
In a recent paper in these Proceedings (Series A, vol. 107, p. 587) Smith-Rose and Barfield have called attention to the two outstanding problems of the propagation of wireless waves over the earth sExpand
A theory of incoherent scattering of radio waves by a plasma
  • J. Dougherty, D. T. Farley
  • Physics
  • Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
  • 1961
A theory is developed which describes the scattering of radio waves by the random thermal fluctuations of electron density in a collision-free plasma. The frequency spectrum, as well as theExpand
Incoherent Scattering of Radio Waves by Free Electrons with Applications to Space Exploration by Radar
Free electrons in an ionized medium scatter radio waves weakly. Under certain conditions only incoherent scattering exists. A powerful radar can detect the incoherent backscatter from the freeExpand
The Role of Stratospheric Scattering in Radio Communication
On the mixing-in-gradient hypothesis of incoherent scattering of radio waves in a dry atmosphere, the intensity of the irregularities in dielectric constant depends on the excess of the temperatureExpand
A Theory of Radio Scattering in the Troposphere
The theory of scattering by a turbulent medium is applied to scattering of radio waves in the troposphere. In the region below the horizon of the transmitter, energy is received (1) by diffractionExpand
A theory of incoherent scattering of radio waves by a plasma II. Scattering in a magnetic field
A general expression for the frequency spectrum of radio waves scattered by the random thermal fluctuations of electron density in a plasma in a magnetic field is derived. The derivation is based onExpand
Five hundred meter aperture spherical radio telescope (FAST)
Five hundred meter aperture spherical radio telescope (FAST) will be the largest radio telescope in the world. The innovative engineering concept and design pave a new road to realizing a huge singleExpand
Some characteristics of ionospheric backscatter observed at 440 Mc/s
Incoherent ionospherically backscattered radar returns have been observed at 440 Mc/s over an approximate height range of 100 to 800 km. The results of experiments designed to determine the variationExpand
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