Radar Cross-Section Pattern Measurements in a Mode-Stirred Reverberation Chamber: Theory and Experiments

Ariston Reis (1) , Francois Sarrazin (1) , Elodie Richalot (1) , Stephane Meric (2) , Jerome Sol (2) , Philippe Pouliguen (3) , Philippe Besnier (2)

1 ESYCOM - Electronique, Systèmes de communication et Microsystèmes
2 IETR - Institut d'Électronique et des Technologies du numéRique
3 AID - Agence de l'innovation de défense

This paper deals with the ability to perform radar cross-section (RCS) pattern measurements within reverberation chambers (RCs). The characterization principle is based on the estimation of the back-scattered field from the target at a farfield distance and takes advantage of the diffuse field within the RC. A frequency sweep of scattering parameters is achieved in presence and absence of the target installed on a rotating mast and the pattern is retrieved from these measurements. This paper explains the underlying theory and discusses the impact of several parameters on the performances. This includes the effect of the stirrer rotation which enables to enhance the dynamic range of the measurements. Experiments in two different RCs show the relevance of the proposed approach for RCS extraction and confirm the theoretical analysis.

Mots clés: Radar cross section; reverberation chamber; measurement

Domaines: Electromagnétisme

Ariston Reis, Francois Sarrazin, Elodie Richalot, Stephane Meric, Jerome Sol, et al.. Radar Cross-Section Pattern Measurements in a Mode-Stirred Reverberation Chamber: Theory and Experiments. IEEE Transactions on Antennas and Propagation, 2021, 69 (9), pp.5942 - 5952. ⟨10.1109/TAP.2021.3060581⟩. ⟨hal-03157142⟩