A Study on Radar Cross Section Measurements in an Anechoic Chamber

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  • 電波暗室内におけるレーダ散乱断面積の測定に関する一検討
  • デンパ アンシツナイ ニ オケル レーダ サンラン ダンメンセキ ノ ソクテイ

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Abstract

Radar cross section measurement techniques in a relatively small anechoic chamber have been discussed in this paper. A proper configuration of measurement system and antenna/target setting is studied for securing a wide dynamic measurement range. Quasi-monostatic configuration is recommended here instead of monostatic one, and various comments are made for reducing isolation error and background noise, calibration techniques, and antenna setting. Measurement examples are shown for a conducting plate and parallel plane waveguide cavities. These results are then compared with those derived theoretically by geometrical theory of diffraction and Wiener-Hopf technique. Good agreements have been obtained between them, and validity of our measurement is confirmed.

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