A compact range RCS measurement system

This paper discusses a compact range radar cross-section measurement system. The system consists of a dual-shaped offset Cassegrain antenna system and a short pulse coherent radar cross-section instrumentation system. The combination of a highly focused antenna beam and a short pulse radar system with high performance time domain gating allows a considerable improvement of the compact range performance as compared with front-fed offset parabolic antenna systems. The paper also presents some of the results obtained in a scaled-down EHF compact range set up in a small room with no microwave absorbing material on the ceiling, floor, and sidewalls.