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A new method for predicting HF ground wave attenuation over inhomogeneous, irregular terrain / R.H. Ott.
- Format:
- Book
- Government document
- Author/Creator:
- Ott, R. H.
- Series:
- OT/ITS research report ; 7.
- OT/ITS research report ; 7
- Language:
- English
- Subjects (All):
- Radio waves--Attenuation--Mathematical models.
- Radio waves.
- Radio wave propagation--Mathematical models.
- Radio wave propagation.
- Radio waves--Attenuation.
- Physical Description:
- 1 online resource (iv, 57 pages) : illustrations.
- Place of Publication:
- Boulder, Colo. : U.S. Dept. of Commerce, Office of Telecommunications, Institute for Telecommunication Sciences, [1971]
- Summary:
- Several examples of the numerical evaluation of an integral equation for the calculation of the attenuation of a radio wave are given. These waves are assumed to be propagated over realistic, smoothly varying irregular, inhomogeneous terrain. Results for propagation over a cylindrical earth show an accuracy to 3-4 significant figures when compared with the classical residue series. Calculations for propagation over smooth mixed land-sea paths agree with classical methods. The applicability of the program to permit computation of propagation over terrain with smooth height variation is demonstrated by calculations of propagation over one and two Gaussian-shaped hills. The ability of the program to allow treatment of variations in both ground conductivity and height combined is illustrated by calculations of propagation from the sea up a sloping beach and by calculations of propagation over an island. The last example illustrates the importance of the terrain profile in mixed path calculations.
- Notes:
- Title from title screen (viewed on Dec. 20, 2010).
- "January 1971."
- Paper version no longer available for sale by the Supt. of Docs.
- Includes bibliographical references (pages 22-23).
- Electronic reproduction. [Place of publication not identified] : HathiTrust Digital Library, 2011.
- Other Format:
- Print version: Ott, R.H. New method for predicting HF ground wave attenuation over inhomogeneous, irregular terrain
- OCLC:
- 227622225
- Access Restriction:
- Use copy Restrictions unspecified
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