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为解决由于强亮点源(以下称为干扰)的存在影响对弱亮点源(以下称为目标)的测量和分析,甚至无法得到弱目标噪声源声图的问题,给出了一种聚焦波束形成的零阶和一阶导数共同约束的零陷权(以下称为一阶零点约束权).该权可以在任意给定的多个位置形成零点,取得目标的位置和波形,并抑制干扰的旁瓣,且仅取决于干扰的位置,无需实时解算,运算量小、稳健性高.不同信噪比和信干比条件下,单个和多个干扰的仿真结果表明,该算法在常规的聚集波束形成无法得到目标噪声源声图的情况下,可以在单个或多个干扰位置形成零点,得到目标噪声源的声图.
In order to solve the problem that the sound source of the weak target noise can not even be obtained due to the existence of the strong bright point source (hereinafter referred to as interference) on the measurement and analysis of the weak bright point source (hereinafter referred to as the target), a focused beamforming (Hereinafter referred to as the first-order zero-point constraint) constrained jointly by the zero-order and first-order derivatives of the zero-order and the zero-order Which depends only on the position of interference and does not need to be solved in real time.It has low computational complexity and high robustness.The simulation results of single and multiple interferences under different signal-to- If the target noise source sound image can not be obtained, a zero point can be formed at one or more interference positions to obtain the sound image of the target noise source.