基于国产芯片的水声信号滤波器设计

Independent Design of Underwater Acoustic Signal Filter

为改变目前国内水声信号滤波器大多采用进口专用芯片的现状,设计一种基于国产芯片的水声信号滤波器替代方案。对通用带通滤波器传递函数的演变进行介绍,结合其实际应用情况,通过查表和理论计算,设计一种基于国产芯片的水声信号滤波器,并对其中心频率、带宽和矩形系数等指标进行实测,验证该设计的可行性。结果表明,该水声信号滤波器基本上能达到水声信号接收机的设计要求。

In view of the unpredictable world chip supply situation,an underwater acoustic signal filter based on domestic chip is developed.The designed filter is of general bandpass type,oriented to practical application.The center frequency,bandwidth and rectangular coefficient of the filter are measured and evaluated against the requirements of water-acoustic signal receiver.