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DIPOLE CROSS SECTIONS COMPUTED BY VARIATIONAL TECHNIQUES
TEXAS UNIV AT AUSTIN DEFENSE RESEARCH LAB
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The results of dipole cross section measurements are presented. They indicate that 1 the horizontal-vertical distribution should be used for dipoles falling in non-turbulent air when the dipoles are less than three inches in length, 2 as dipoles increase in length, there is a gradual shift nearer to the random-orientation distribution, 3 neither distribution accounts completely for the actual measured cross sections,AND 4 the tables which are presented give results 1.5 db nearer the measured values than cross sections computed on the basis of the Van Vleck method. This is an improvement in accuracy in excess of 40. Since this corresponds to a reduction of 40 in the weight of chaff needed to produce a given echo, it is obviously of great importance to the designer of operational chaff systems.
APPROVED FOR PUBLIC RELEASE