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Author: A. F. Armington
Publisher:
ISBN:
Category : Chemicals
Languages : en
Pages : 24
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Book Description
Author: A. F. Armington
Publisher:
ISBN:
Category : Chemicals
Languages : en
Pages : 24
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 840
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Author: Guy H. Moates
Publisher:
ISBN:
Category : Chemicals
Languages : en
Pages : 24
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Book Description
Author: P. Blacksmith (Jr.)
Publisher:
ISBN:
Category : Radar cross sections
Languages : en
Pages : 26
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1776
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 780
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Author: L. M. Keane
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 32
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Book Description
A general description of AFCRL's new 29-ft parabolic antenna is given. This antenna, designed for operation at 35 Gc, has Cassegrain feed optics and a precise reflecting surfdce supported on an elevation over azimuth mount. Design parameters include a gain of 67.5 dB at 35 Gc and a pointing capability of better than =1 arc min under 30-knot wind loads, normal solar loading, and peak accelerations of .012 deg/sq sec. The servo system was designed primarily to track objects traveling at sidereal rates. A limited satellite tracking capability should exist, however. Emphasis is given to engineering aspects of the tower, mount, drive system, and reflector assembly which should provide efficient rf operation and extreme precision in pointing. (Author).
Author: John P. Castelli
Publisher:
ISBN:
Category : Radio astronomy
Languages : en
Pages : 92
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Author: E. DeBary
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 370
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The tables present the results of computations of the intensity and the degree of polarization of sky radiation and radiation scattered by a unit volume of air containing natural aerosols. The tabulated data are based upon new values of the scattering functions i sub 1 and i sub 2 and the scattering cross sections k, derived using the Mie theory with m = 1.5. In the case of primary scattering of radiation, the results are valid for a turbid atmosphere. The tables of the scattering coefficients and optical thickness, the absolute scattering functions, the intensities, and the degrees of polarization are computed for various wavelengths between 0.4 and 1.2 microns and for discrete scattering angles between 0 and 180 degrees. Aerosol size distributions of the form dn(r) = c.r/v dlogr, with v = 2.5, 3.0, and 4.0, are assumed. The lower and upper limits for the size range were chosen as r sub 1 = 0.04, 0.06, and 0.08 micron and r sub 2 = 3,5, and 10 microns respectively. (Author).
Author: W. F. Bahret
Publisher:
ISBN:
Category : Radar
Languages : en
Pages : 18
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