谐波线谱簇干扰自适应抵消器

Adaptive noise canceller applied to harmonic line interference

对于舷侧阵声呐本地干扰抵消技术，优良参考信号的抬取以及数据融合是关键．木文首先分析舷侧阵声呐使用频段内自噪声的频率分布特性，然后提出谐波线谱簇干扰抵消器的概念．文献１中给出单频线带干扰抵消器的理论分析，本文给出多频线谱于扰抵消器的理论分析．基于陷波滤波器品质因素的表达式，给出恒Ｑ值线谱干扰抵消器的设计方法．同时提出一种性能优良的实现谐波线谱簇合成的方法．计算机仿真结果以及海试数据分析结果令人满意．

In problem of Adaptive Self-Noise Canceling in flank array sonar, reference signals' pick up and fusion withhigh quality are the key points. First the distribution characteristic of self-noise along the concerned frequency band isdiscussed, then the conception of ANC addressing Harmonic Line interference Cluster is Proposed.Following reference[1], where a theoretical solution of ANC addressing single frequency line interference is given,this paper will discuss the case of Multi-Tone Line interference. Based on the notch filtering quality faCtor, the design ofLine interference canceller with constant Q is approached. An effective scheme to synthesize the Harmonic Line Clusteris also proposed in addition. Relative computer simulation and sea trial have been carried out, with satisfying results.