求根传播算子方法及其在ARM抗诱偏中的应用

反辐射导弹（ARM）抗有源诱偏问题中,多源信号在空、频域的强相关性往往造成导引头对信源数目欠估计,从而导致传统超分辨算法的测向性能下降。针对这一问题,提出了一种求根的传播算子方法,该算法首先在信源数过估计情况下计算信号到达角,然后利用每个角度对应的信号功率来剔除虚假角度。求根传播算子方法不需要预先估计信号源数目,而且在信号高度相关的情况下具备很好的角度分辨性能,因此适用于解决ARM抗诱偏问题。仿真实验结果表明,求根传播算子方法在提高ARM抗诱偏能力方面的表现优于MUSIC算法。

A rooting propagator method and its application in anti-radiation missile antagonizing active decoy

In the problem of anti-radiation missile（ARM） antagonizing active decoy,the strong correlation of the multi-source signal in spatial-frequency domain results in that the seeker less estimates the number of the sources,which makes the conventional super-resolution algorithms loss their performance of directions finding.Aiming at this problem,a rooting propagator method is proposed,which estimates the signals＇ directions of arrival in the situation that the number of sources is over estimated,and then the fake directions are eliminated according to the signal power corresponding to every direction.The proposed method does not need previous estimation of the sources number.Under the condition that the signals are strongly correlated,the rooting propagator method possesses good resolution performance,so it＇s suitable to be adopted in the problem that ARM antagonizes active decoy.The results of simulation support that the proposed method possesses better performance in ARM antagonizing active decoy than that of the MUISC algorithm.