自适应极化滤波的抗干扰性能研究

Study on Anti-Jamming Performance Based on Adaptive Polarization Filter

针对极化域这一崭新的电子对抗(ECM)领域,研究了基于卡尔曼滤波的自适应极化滤波技术。该技术在雷达信号间歇期进行干扰极化状态的估计,在雷达信号存续期进行自适应极化滤波。理论分析和仿真结果均表明该技术具有极高的极化估计精度,在抑制干扰的同时,可提高信干比约40 dB。

Aiming at polarization domain, which is a new electronic counter measures（ECM） field, the adaptive polarization filter technology based on Kalman filter is studied. This technology estimates the polarization of the jamming signal at diapauses of radar signal and carries out adaptive polarization filtering when radar receiving targets＇ echo. Theoretical analysis and simulation results show that this technology has very high polarization estimated accuracy. It can not onlv reiect jamming, but also can improve signal to jamming ratio about 40dB.