混响环境中的广义线性约束最小几何功率波束形成算法  

Generalized Linear Constrained Minimum Geometric Power Beamforming Algorithm in Reverberation Environment

作　　者：侯发林 张召奎[1] 彭成 朱春雷[2] 

机构地区：[1]中国人民解放军91388部队 [2]中国人民解放军91141部队

出　　处：《水雷战与舰船防护》2015年第4期39-41 38,38,共4页Mine warfare & Ship Self-Defence

摘　　要：提出一种适用于混响环境中的波束形成算法,算法对现有的线性约束最小几何功率波束形成算法进行了广义上的优化,采用迭代复加权最小二乘法对线性约束最小几何功率波束形成算法的权向量进行求解推导,保证了期望方向上始终保持单位增益,且对其他方向上的能量起着明显而稳定的抑制作用,克服了传统的基于二阶统计矩的波束形成器不适用于混响信号的不足,并加快算法的收敛速度。仿真结果表明,这种算法在混响环境下相比线性约束最小几何功率约束形成算法更有效,鲁棒性更强。This paper proposes a beamforming algorithm adapted to reverberation environment.The algorithm based on optimizing the existing linear constrains minimum geometric power beamforming.The iteratively re-weighted least squares algorithm is adopted to calculate the proposed beamformer weights.The algorithm makes the energy of expected direction increases stably,and energy plays a significant and stable inhibitory effect in the other direction.The algorithm resolves the problem of traditional service based on second order matrix of waveform can' t apply to the reverberation environment,and it accelerates the convergence speed.Simulation results show that this algorithm is more effective and stronger robustness compared with the linear constraint minimum geometric power in a reverberation environment.

关 键 词：混响 几何功率 波束形成 线性约束 

分 类 号：TN911.7[电子电信—通信与信息系统]