RCS of four fuselage-like scatterers at HF frequencies

Abstract

Coastal HF radar in the ground-wave mode may be useful for monitoring the movement of ships, aircraft, and icebergs over vast areas of ocean. At HF frequencies an aircraft is in the 'resonance range' of size. The radar cross section (RCS) of four fuselage-like scatterers of resonant size, illuminated end-on (noise-on for the aircraft), and broadside is studied. The RCS is determined both by direct measurement and by wire-grid modeling, with good agreement. The RCS is studied as a function of frequency for scatterer lengths from 0.5 lambda to 3.5 lambda . The RCS behaves quite differently for end-on incidence than for broadside incidence.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>