Monopulse is a technique with which information concerning the angular location of a target is obtained by comparison of signals received in multi-channels.It is widely used in tracking radars.This paper proposes a valuable monopulse imaging algorithm for airborne radar forward-looking imaging.As is prored by experimental results

compared to the real-beam imaging method，this algorithm can provide remarkably improved images，which are difficult to be obtained by SAR or DBS.