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Design of a Radar Signature Measurement Model of an Unmanned Aerial Vehicle with Low Radar Signature

(River Publisher, 2024) Ven, H. van der ; Bocanegra, D.E. ; González, J. ; Inal, M.E. ; Altinoklu, A. ; Öztürk, A. ; Jakobus, U. ; Osipov, A. ; Lie-Svendsen, Oystein ; Weinmann, F. ; Andersson, A. ; Edefur, H. ; Hall, J.-O. ; Poyatos Martínez, D. ; Çiftçi, T.

Existing databases of RCS benchmarks lack a complex, low-observable target. This paper describes the design of such a complex and low-observable measurement model. Starting point of the design is the so-called Muldicon model, developed by the NATO/STO/AVT panel. Hot spots of the original model are identified and treated with radar-absorbing materials. Simulations on the treated model demonstrate that the model is indeed low observable. The effect of the manufacturing process of 3D-printing and separable parts is assessed experimentally on a cone-sphere; the effect is found to be negligible. These results give confidence that the model, when built, satisfies the requirements of being complex and low observable; and that artefacts of the manufacturing process will not impair its signature.