基于矢量阵p+vc处理的全可调向差分波束形成方法

Steerable Differential Beamforming Method Based on Vector Sensor Array p+vc Processing

摘要:

针对声压阵可调向零点约束差分波束形成存在的“左、右模糊”问题,研究了基于矢量阵的差分波束形成调向方法。利用矢量水听器的质点振速量,通过 p+vc 声压振速加性联合处理方法,抑制期望方向沿阵列轴向对称位置的波束主极大。改变调向角度能够实现波束图主瓣指向期望方向。计算机仿真结果表明：矢量阵差分波束形成技术能够在 [0, 360] 范围内实现波束调向,改善“左、右模糊”,具备更好的非端射方向探测性能,有良好的水下目标探测应用前景。

Abstract:

Aiming at the problem of azimuth ambiguity in the steerable null-constrained differential beamforming of sound pressure array, steerable differential beamforming based on vector array is studied. Using the particle velocity of the vector hydrophone, the main beam of the desired direction along the axial symmetrical position of the array is eliminated by the p+vc sound pressure and vibration acceleration joint processing method. By changing the steering angle, the main lobe of the beam pattern can point to the desired direction. The simulation results show that the vector array differential beamforming technology can realize beam steering in the range of [0, 360] , suppress azimuth ambiguity, have better non-endfire direction detection performance, and have good application prospects for underwater target detection.