研究了声光滤波的工作原理,用布拉格器件作模拟抽头延迟线完成横向滤波。讨论了LMS自适应滤波的基本方法,给出了声光自适应LMS滤波的实现方法并用于扩频通信的窄带干扰抑制中。对扩频通信进行干扰抑制的滤波过程通常是一个自适应过程,采用声光自适应滤波技术,不仅能抑制窄带干扰,而且能提高系统的处理增益和分辨率。 The working principle of the acousto-optic filter is studied. The Bragg device is used to simulate the tapped delay line to complete the lateral filtering. The basic method of LMS adaptive filtering is discussed. The realization method of adaptive LMS filtering is given and it is used in the narrowband interference suppression of spread spectrum communication. The filtering process of interference suppression for spread spectrum communication is usually an adaptive process, using the adaptive technology of acoustic and optical filters, which can not only suppress the narrowband interference but also improve the processing gain and resolution of the system.