Effects of the Electromagnetic-Field-Combined Profile of Radar and Decoy on Direction-Finding System of Anti-Radiation Missile
雷达诱饵合成场对反辐射导弹测向系统的影响

Under the consideration of field pattern and polarization, a mathematic model related to the filed radiated from the antenna of radar and decoy is presented. Based on the mechanism of two-channel direction-finding systems with four-arm spiral antenna, the simulation algorithms and formulae are introduced and the tracking characteristic of Anti-Radiation Missile (ARM) is analyzed when the system is exposed in the electromagnetic-field-combined profile of radar and decoy. Numerical results show that ARM may be decoyed to a trapped area if the power and initial phase of the radiation filed of the decoy relative to the radar are set to some appropriate values.