基于万有引力搜索算法的拖曳线列阵稀疏布阵方法

An Array Method of Sparse Towed Linear Array Base on Gravity Search Algorithm

针对拖曳线列阵阵元个数多、布阵优化模型复杂以及计算量大等问题,提出了一种基于万有引力搜索算法的拖曳线列阵稀疏布阵模型。采用万有引力搜索算法优化拖曳线列阵阵元布置,并将优化后的非均匀稀疏布阵方式与其他几种不同的布阵方式分析比较。非均匀稀疏拖曳线列阵能以较少的阵元数目达到与其他几种布阵相似甚至更好的指向性,并有效解决均匀稀疏拖曳线列阵的栅瓣问题。利用基于万有引力搜索算法的拖曳线列阵稀疏布阵方法能够保证探测能力,降低拖曳线列阵成阵难度,减少成本。

Aiming at the problems of large number of elements in towed line array,complex layout optimization model and large amount of calculation,a sparse layout model of towed line array based on gravitational search algorithm is proposed.The gravitational search algorithm is used to optimize the array layout of towed lines,and the optimized non-uniform sparse array mode is analyzed and compared with several other different array modes.Non-uniform sparse towed linear array can achieve similar or even better directivity with fewer elements,and effectively solve the grating lobe problem of uniform sparse towed linear array.Using the sparse array arrangement method of towed linear array based on gravitational search algorithm can ensure the detection ability,reduce the difficulty of towed linear array formation and reduce the cost.