The rapid discontinuous fluctuations observed in the scattering from a moving multielement target, known as the intermittent-contact RADAM effect, are produced by variations in the surface currents caused by motion-induced changes in current paths between the target elements. Such a target can be modeled as a loaded scatterer. Tracked vehicles produce very strong and distinctive RADAM modulation at VHF frequencies. The results of experimental studies using a 5:1 scale-model tank ...
Electron density measurements made with the incoherent-scatter radar at Chatanika, Alaska have been used to obtain a synoptic model of the high-latitude ionosphere. This Chatanika model is a modification of the RADC-POLAR model developed by Elkins and coworkers for use in raytracing codes for HF propagation prediction. Because the existing RADC model was derived from a larger and more geographically extensive data base than that used in this study, many ...
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