RCS of reflector antennas and feed horns

Considerable interest has been given to the reduction of the radar cross-section of military platforms. Careful design of the platform geometry and the judicious use of radar absorbent materials has resulted in significant reduction of the RCS response. As a result, attention has been given to the characterisation of the onboard sensors in order that they do not become the predominant source of reflection. Of particular importance is the RCS of high gain tracking antennas, since they may be directed at and locked onto a threat, providing a constant return to the radar