基于虚拟仪器的水下目标回波信号发生器设计

摘要

In order to troubleshoot the defects with the implementation of underwater target echo-signal generator by using traditional embedded systems,the techniques of NI virtual instrument are explored for this purpose.Firstly,a software module that simulates under water target echo-signals is developed in the IDE LabVIEW by utilizing G programming language.Then,the generated signals are practically output via the so called PXI-1050 hared platform,which consists of the PXI-8087 embedded controller and PXI-6070E multi-function DAQ card.The designed generator is advantageous in working speed and flexibility.%为克服采用传统嵌入式系统实现水下目标回波信号发生器存在的硬件设计调试难度大、灵活性差等不足,基于NI虚拟仪器技术,在LabVIEW开发环境中应用G语言设计了生成水下目标回波信号生成模块,然后,该模块输出信号通过配置了PXI-8087嵌入式控制器和PXI-6070E多功能数据采集卡的PXI 1050虚拟仪器平台进行硬件输出,供水声设备测试时使用;经实际使用表明,该系统达到了设计要求并具有快速灵活的特点,能够为今后类似系统的开发提供有益参考.