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基于斜投影算子固有的抗干扰优点,结合极化滤波,文中提出了斜投影极化滤波。该方法不需要通过变换和补偿而实现目标与干扰的分离,且对目标的幅度/相位信息没有影响;在目标和干扰具有相同的极化角、不同的极化角相差时也能完成干扰与目标的分离。当目标极化状态已知、干扰极化状态未知的情况下,同样也能实现干扰抑制而不对目标的幅度/相位产生影响。理论推导和仿真结果表明斜投影极化滤波是一种有效、实用且结构简单的方法,同时也是传统极化滤波和零相移极化滤波的推广,进一步发展和完善了极化滤波理论。
Based on the inherent anti-interference advantages of oblique projection operators, combined with polarization filtering, oblique projection polarization filtering is proposed in this paper. The method does not need to achieve the separation of the target and the interference by the transformation and the compensation, and has no influence on the target amplitude / phase information. The interference and the polarization have the same polarization angle and the polarization angle can also complete the interference and The separation of goals. When the target polarization state is known and the interference polarization state is unknown, interference suppression can be achieved without affecting the target amplitude / phase as well. Theoretical derivation and simulation results show that oblique projective polarization filtering is an effective, practical and simple method. It is also a generalization of traditional polarization filtering and zero-phase-shifting polarization filtering, and the polarization filtering theory is further developed and perfected.