抗阵列流形误差的稳健低旁瓣波束优化设计

Optimal Design of Robust Low Sidelobe Beam Against Array Manifold Error

文章研究了水听器阵稳健的波束优化方法。分析了阵列流形误差对波束形成器性能的影响,设计了两种抗阵列流形误差的稳健低旁瓣波束形成方法:L1范数准则法(L1方法)和L2范数准则法(L2方法)。在不同阵元位置误差的情况下,对这两种方法进行了仿真分析。对比理想最低旁瓣(SCOP)波束优化设计方法,L1方法和L2方法具有较好的稳健性,验证了抗阵列流形误差的稳健低旁瓣波束形成方法的正确性和可行性。

In this paper,a robust beam optimization method for hydrophone array is studied.The influence of array manifold error on the performance of beamformer is analyzed.Two robust low sidelobe beamforming methods against array manifold error are designed:L1 norm criterion method(L1 method)and L2 norm criterion method(L2 method).In the case of different element po sition errors,the two methods are simulated and analyzed.Compared with the ideal minimum sidelobe(SCOP)beamforming optimi zation method,the L1 method and L2 method have better robustness,which verifies the correctness and feasibility of the robust low sidelobe beamforming method against array manifold error.