基于PXI的相控声纳回波仿真模块设计

根据相控阵多普勒声纳测试的需要,自主设计了基于PXI的相控声纳回波仿真模块设计,具有一路采集和四路回放,四路回波之间可以产生设定相对相移,同时,回放波形可以相对于采样波形有任意的频移、延时及衰减。该模块包括接口电路、DDS电路、存储电路、相移电路、A/D和D/A电路、衰减电路等,经试验验证,该模块具有通用性、高效性和易用性等特点,具有较高的实用价值。

Design of Phased Array Sonar Echo Simulating Module Based on PXI

According to the requirement of phased array Doppler sonar test,a module of Phased Array Sonar Echo Simulating based on PXI is designed.It has one A/D and four D/A circuits,with arbitrary change of frequency,delay,phase shift and attenuation relative to the incoming signal.The module includes interface circuit,DDS circuit,memory circuit,phase shift circuit,A/D and D/A circuits.The module is currency,high performance and easy operation.It is practical and valuable.The paper describes the architecture and method of the design and analyzes the circuit.