利用调频广播信号的浮空平台外辐射源雷达是一种新体制雷达,面临着同频电台干扰难题,提出了干扰状态下基于盲源分离的直达波恢复方法。利用同频电台方位已知等先验信息,提出了一种基于波束域相关函数差异的判断方法,解决了独立成分分析盲源分离算法的输出信号顺序模糊难题,从而可以保证可靠的参考电台直达波恢复,摒弃干扰电台。计算机仿真表明,所给出算法可以准确有效地确定参考电台信号。

Airship borne passive bistatic radar exploiting frequency modulated broadcasting signals is a new type of radar system. Co-frequency interference is frequently encountered in the airship borne passive bistatic radar. Blind source separation called independent component analysis is utilized to recover the direct signal in the above scenarios. The difference of the correlated function in beam space based on the direction of the co-frequency station is utilized to solve the permutation problem of the ICA. The performance of the proposed approach is validated by computer simulation.

TN957

江苏省自然科学基金资助项目( BK20151501);中央高校基本科研业务费专项资助项目(2015B03014)