The axial echo area of a perfectly conducting prolate spheroid

The axial echo area of a perfecfiy conducting prolate spheroid is derived from an approximate solution to a transient scattering problem. This solution is obtained by modifying the time-dependent back-scattered waveform for a perfectly conducting sphere so as to conform with the spheroid geometry. As a result of the analysis, the echo area vs. source frequency may be predicted over the resonance region. Calculated results for the case of a spheroid with a 2-to-1 axial ratio are compared with experimental data for major axes ranging from 0.318 to 1.59 wavelengths.