基于三元阵声纳的强干扰抑制技术研究
发布时间：2018-11-19 14:10
【摘要】：为了提高三元阵被动声纳在水下强干扰下对弱目标的检测性能,文章提出了一种基于三元阵的水下强干扰子空间剔除的抑制算法。算法对强干扰和弱目标分别采用了两种不同的快照数进行处理,用较短的时间估计运动强干扰的干扰空间,采用正交投影的办法从原始信号中去除强干扰;对得到的信号作时间累积,通过自适应波束形成算法或常规波束形成算法实现对弱目标地检测。根据海试数据的处理结果表明,文中建立的算法可以有效地将运动强干扰从接收到的原始信号中剔除,实现了干扰抑制作用,提高了运动强干扰下三元阵声纳对弱目标的检测性能。
[Abstract]:In order to improve the performance of passive sonar detection for weak targets under strong underwater interference, a subspace rejection algorithm based on ternary array is proposed in this paper. The algorithm uses two different snapshot numbers to deal with strong interference and weak target respectively. The interference space of motion strong interference is estimated in a short time and the strong interference is removed from the original signal by orthogonal projection. Based on the time accumulation of the obtained signal, the weak target is detected by adaptive beamforming algorithm or conventional beamforming algorithm. According to the processing results of sea trial data, the proposed algorithm can effectively eliminate the strong motion interference from the received original signal and realize the interference suppression effect. The detection performance of three-way array sonar for weak targets under strong motion interference is improved.
【作者单位】： 哈尔滨工程大学水声技术重点实验室;中国科学院声学研究所水声工程中心;
【基金】：自然科学基金(No.61501133)
【分类号】：TB566
本文编号：2342559
[Abstract]:In order to improve the performance of passive sonar detection for weak targets under strong underwater interference, a subspace rejection algorithm based on ternary array is proposed in this paper. The algorithm uses two different snapshot numbers to deal with strong interference and weak target respectively. The interference space of motion strong interference is estimated in a short time and the strong interference is removed from the original signal by orthogonal projection. Based on the time accumulation of the obtained signal, the weak target is detected by adaptive beamforming algorithm or conventional beamforming algorithm. According to the processing results of sea trial data, the proposed algorithm can effectively eliminate the strong motion interference from the received original signal and realize the interference suppression effect. The detection performance of three-way array sonar for weak targets under strong motion interference is improved.
【作者单位】： 哈尔滨工程大学水声技术重点实验室;中国科学院声学研究所水声工程中心;
【基金】：自然科学基金(No.61501133)
【分类号】：TB566
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