A physical optics model for scattering of HF radiation by irregular terrain

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Description

Physical optics models were developed for scattering of HF radiation by irregular terrain when an antenna is located on or near the scattering surface. The primary interest was in skywave radiation patterns for communication links using the ionosphere. Second-order reflections were included in the solution through an image approximation, and the UTD result for an impedance half-plane was used to reduce reflections due to truncating the current distribution on the surface. Arbitrary 2-D or 3-D terrain profiles can be entered into the codes, and the source can be an antenna with currents generated by the NEC method-of-moments code or a ... continued below

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8 p.

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Burke, G. J. January 1, 1994.

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Description

Physical optics models were developed for scattering of HF radiation by irregular terrain when an antenna is located on or near the scattering surface. The primary interest was in skywave radiation patterns for communication links using the ionosphere. Second-order reflections were included in the solution through an image approximation, and the UTD result for an impedance half-plane was used to reduce reflections due to truncating the current distribution on the surface. Arbitrary 2-D or 3-D terrain profiles can be entered into the codes, and the source can be an antenna with currents generated by the NEC method-of-moments code or a point source. Results were validated by comparing with 2-D integral equation solutions for actual terrain contours.

Physical Description

8 p.

Notes

OSTI as DE94006187; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

Source

  • 10. annual review of progress in applied computational electromagnetics,Monterey, CA (United States),21-26 Mar 1994

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  • Other: DE94006187
  • Report No.: UCRL-JC--115241
  • Report No.: CONF-940366--1
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 10119686
  • Archival Resource Key: ark:/67531/metadc1276466

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1994

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  • Oct. 12, 2018, 6:44 a.m.

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Burke, G. J. A physical optics model for scattering of HF radiation by irregular terrain, article, January 1, 1994; United States. (digital.library.unt.edu/ark:/67531/metadc1276466/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.