Renner, Otto, Boisselle & Sklar, LLP
Far field emulator for antenna calibration
A radar antenna for a guided missile is calibrated in flight using a point source of microwave radiation and a lens to emulate a far field source. The microwave source and lens fit behind a metal cap at the leading end of the radome and so do not adversely affect the radar. A variety of techniques to power the point source are disclosed, and a variety of lens arrangements are disclosed. The invention allows a radar antenna to be calibrated in flight, and so insures against mis-calibration due to aging components as well as the heat and mechanical forces associated with storage and/or launch of the missile.
Raytheon Company
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Alphonso A. Harry A. Dennis C. Delmar L. Steven David J.
Samuel Schmitt Braunreiter Barker Schultz Knapp