数字均衡技术在水声宽带系统中的应用

为了提高声纳探测目标的能力，往往采用复杂的发射信号体制，并且所覆盖的频带越来越宽。但是湿端的宽带换能器在所需工作频段内的收发电压响应并不是平滑均等的，这对信号处理产生较大的影响，需要对其进行补偿。研究了数字均衡器的特点，并将其引入到宽带接收系统中用于补偿匹配换能器。最后在NI-CompactRIO平台中实现了该功能，通过仿真试验验证了该方法是有效可行的。这对该技术在水声宽带系统中的应用提供了参考。

Application of digital equalizer technology in underwater broadband system

The complex transmitting signal system is often adopted in order to enhance the sonar’s capability of target searching,and the covered frequency band of this system is getting wider and wider.However,the trans-mitting and receiving voltage response curve of a broad band underwater transducer is usually not flat in the frequency range.This brings influences on signal processing,which requires compensation for frequency re-sponse.This paper studies the characteristics of digital equalizer and applies this to compensate the matching transducer in broad band receiving system.The function is realized at the platform of NI-CompactRIO and proved to be available and feasible by simulation,which offers a reference for the application of digital equalizer in acoustic broad band system.