ESSA Technical Report ERL. PDF Download
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Author:
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ISBN:
Category : Atmosphere
Languages : en
Pages : 832
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Book Description
Author:
Publisher:
ISBN:
Category : Atmosphere
Languages : en
Pages : 832
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Book Description
Author: United States. Environmental Science Services Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
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Book Description
Author: United States. National Oceanic and Atmospheric Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
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Book Description
Author:
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 68
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Book Description
Author: Institute for Telecommunication Sciences
Publisher:
ISBN:
Category : Radio noise
Languages : en
Pages : 60
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Book Description
Values of required signal-to-noise ratios are estimated for the following HF communication systems: amplitude-modulation (AM) voice communication systems, noncoherent frequency-shift-keying (NCFSK) radioteletypewriter systems, composite voice and teletypewriter systems, aural-reception radiotelegraphy, and phototelegraphy (facsimile). Except for NCFSK systems, for which certain aspects of the basic performance had to be evaluated in the course of this study, values of required signal-to-noise ratios are estimated from published data in the open literature. (Author).
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 300
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Book Description
Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1250
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Book Description
Author: R. D. Hunsucker
Publisher:
ISBN:
Category : Ionospheric radio wave propagation
Languages : en
Pages : 164
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Book Description
Author: Marvin Frerking
Publisher: Springer Science & Business Media
ISBN: 1475749902
Category : Science
Languages : en
Pages : 638
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Book Description
An engineer's introduction to concepts, algorithms, and advancements in Digital Signal Processing. This lucidly written resource makes extensive use of real-world examples as it covers all the important design and engineering references.
Author: L. L. Proctor
Publisher:
ISBN:
Category : Ionospheric radio wave propagation
Languages : en
Pages : 100
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Book Description
Measurements for the month of April 1969 were made on a 2.666-MHz east-west path between Long Branch, Illinois, and Boulder, Colorado, to validate current ESSA/ITS prediction programs. After the difference between the measured observations and the computer calculations had been determined, additional path calculations centered about the Boulder receiving site were made to identify potential interfering sources. Point-to-point calculations along quadrature radials were used, with the range being incremented five times along each radial between the limits of 500 and 5000 km. The analysis determines the required transmitter power to produce a CW signal via the predominant mode which is 90 percent reliable and 12 dB above the controlling noise (atmospheric, man-made, galactic, or a combination). The averaged night values of required transmitter power including an 8-dB correction factor found from the measured observations, are tabulated by month as a function of both the bearing and range.
