Abstract:For the active decoy of mainlobe irradiate, this paper proposed countermeasures of intrapulse strong signal detection against decoy. Firstly, this paper made a theoretical analysis on the effect of decoy against anti-radiation seeker orientation; Secondly, using three decoys three dimensions error formula to make a quantitative calculation of decoy inveigles error under the condition of mainlobe irradiate radar; Finally proposed intra-pulse strong signal detection technology. According to theoretical analysis and quantitative calculation, the intra-pulse strong signal detection technology can deal with active decoy of mainlobes of radar irradiate, and this technology is a reasonable and viable decoy countermeasures.