To antagonize radar bait decoy, the uniform circular array antenna was used in the anti-radiation missile (ARM) to locate the radar and baits according the principles of anti-radiation missiles cajolery, and the MUSIC algorithm was adopted to estimate the direction-of-arrival (DOA). The angle ambiguity of uniform circular array was analyzed, and the non-ambiguity condition was obtained. Then the 2D-MUSIC algorithm of uniform circular array was presented, which can estimate the DOA of multiple non-coherent emitters. Finally, two emitters location with five sensors were simulated. The simulation results demonstrate that using this method, ARM can antagonize bait decoy effectively.