Accession Number:

ADA050143

Title:

Transient Analysis of a Finite Length Cylindrical Scatterer Very Near a Perfectly Conducting Ground.

Descriptive Note:

Final rept.,

Corporate Author:

AUBURN UNIV ALA ENGINEERING EXPERIMENT STATION

Personal Author(s):

Report Date:

1977-11-01

Pagination or Media Count:

101.0

Abstract:

In attempting to model and predict the magnitude of the surface currents induced on aircraft in the ground-alert mode, it is necessary to examine the effects of the near proximity of the earths surface. For thin cylindrical scatterers sufficiently far removed several wavelengths from the surface, these effects may be taken into account with filamentary currents on the scatterer and its image. However, if the scatterer is moved very near a fraction of a wavelength to the ground, the assumption of filamentary currents is invalidated. In this note a transmission line mode approximation is used to model the circumferential variations of the surface current induced on a finite length cylindrical scatterer very near a perfect ground. This solution is compared to previous solutions based on filamentary currents. The results give clear indications as to when the more sophisticated approach should be used to obtain valid solutions to the scattering problems of this type. Author

Subject Categories:

  • Electricity and Magnetism
  • Electromagnetic Pulses

Distribution Statement:

APPROVED FOR PUBLIC RELEASE