提出了一种基于增长法的神经网络结构优化算法. The inverse beamforming ( IBF ) algorithm is simple and easy to be used in the practical engineering. 本文给出的逆波束形成 ( IBF ) 方法具有抗多途效应效果好、算法简单、易于工程实现等优点. Without spectral peak searching and complex computation, this algorithm works well for pairing among parameters. 仿真试验表明,该算法估计精度高、计算量小, 有一定的实用性.