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自适应波束形成对于微小的误差或扰动是非常敏感的.阵元间互不相关的误差或扰动对波束形成的影响如同一种不相关的空间白噪声,因此,抗白噪声基阵增益是Robust性的一种度量.本文提出了一种新的自适应波束形成算法:对抗白噪声基阵增益进行一个不等约束的同时,在线性约束条件下使波束形成的输出功率达到最小.这样,导出了一种有效的Robust自适应波束形成算法.这种算法在波前扰动,阵元位置或波束指向向量误差情况下,能够得到较好的基阵处理增益,从而改善了自适应波束形成的性能.本文最后对这种算法的稳态性能进行了计算机模拟和湖上实验研究.
Adaptive beamforming is very sensitive to small errors or disturbances, and the influence of uncorrelated errors or disturbances between elements on beamforming is like an uncorrelated spatial white noise, so the gain against white noise array is Robust In this paper, a new adaptive beamforming algorithm is proposed in this paper: aiming at the unequal constraint of gain of white noise array, the output power of beamforming under linear constraint is minimized, An effective Robust adaptive beamforming algorithm is proposed in this paper, which can obtain better array processing gain under the conditions of wavefront perturbation, array element position or beam steering vector error, so as to improve the performance of adaptive beamforming At the end of this paper, the steady state performance of this algorithm is simulated by computer and on the lake.