基于虚拟仪器的导航雷达回波信号采集器设计与实现

信号采集的目的是了后续雷达成像和海浪信息提取。基于虚拟仪器技术,对单脉冲体制导航雷达设计了一套数据采集系统。以计算机和PXI-9820数据采集卡为硬件,以VC++6.0软件作为开发平台,构建了基于Windows平台的数据采集系统,雷达回波信号采集单元采用多路信号同步采集的设计方案,并指出了系统实现过程中的多通道同步采集的关键技术问题。东海某海域的岸基采样实验证明了基于虚拟仪器技术的数据采集器设计的可行性及系统运行的可靠性。

Marine radar echo data acquisition system based on virtual instrument

The purpose of signal acquisition is for radar imaging and wave information extraction. A signal acquisition system which based on virtual instrument technology that designed for mono-pulse marine radar echo is presented in this paper. The DAQ platform’s hardware is made up of PC and PXI-9820 data acquisition card and software is developed by Microsoft Visual C＋＋6.0.The integrated system is based on Windows operation system. The multi-channel synchronous acquisition for sampling design is always adopted at radar echo signal acquisition unit and the key technical problem of multi-channel synchronous acquisition in system implementation process was pointed out in this paper. The shore-based experimentation in East China Sea shows the feasibility and the validity of the data acquisition system based on virtual instrument.