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Low cost arrangements for scale model RCS and pattern measurements

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2 Author(s)
Eskelinen, Pekka ; Lappeenranta Univ. of Technol., Finland ; Harju, P.

Cost-effective RCS and radiation pattern measurements are possible with scale models of original targets using frequencies up to 20 GHz when construction efforts are focused at relevant details and requirements of increased conductivity are not exaggerated. Aluminium foil and copper tape work well as coating surface whereas many foam based plastics are readily usable as transparent structures. Most pattern measurements can be performed at one sixth of the far field limit with less than 1 dB error and even RCS tests give reasonable views on critical locations of the design within similar distances. Here uncertainties below 3 dB are readily achievable though fringing patterns require heavy mathematical post-processing. A suitable combination of target scale reduction, generally below 1:20, often enables the use of both modest X to Ku band frequencies, medium sized rotators for targets lighter than 10 kg and indoor test ranges with path distances under 10 meters

Published in:

Aerospace and Electronics Conference, 1997. NAECON 1997., Proceedings of the IEEE 1997 National  (Volume:2 )

Date of Conference:

14-18 Jul 1997

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