激光多普勒测振计信号采集和处理系统设计

摘要

为实现激光-水声浅海地形遥感探测中, 激光多普勒测振计的数据采集和处理, 解决数据采集处理中采样率低、 人机界面操作不便、 在线处理不及时、 采样通道数目少等问题, 设计了一种可视化的信号采集和处理系统.借助VC十十编程技术, 对PCI5616数据采集卡进行了二次开发, 实现了激光多普勒测振计输出信号的采集、 实时显示、 保存以及在线处理. 实验表明, 该信号采集处理系统能满足实际水面测量的工作需求, 有效实现了激光多普勒测振计输出信号的实时采集与处理, 并具有操作灵活、 实时性强、 集成度高等特点.%A visual data acquisition and processing system is presented to satisfy the signal processing specifica -tion of the laser Doppler vibrometer ( LDV) working for the optic-acoustic remote sensing of the shallow terrain and to resolve the questions of low sampling rate , inconvenient man-machine interface and the less number of channels forsampling.VC ++is employed in the post-development of PCI5616 to achieve real-time display, acquisition, storage,and real-time data-processing of the signals.With good processing capacity, flexible operation, good real-timeperformance and high integration, this data acquisition and processing system realizes the real -time acquisition andprocessing of the output signals of LDV and meets the demand of topographic mapping under the hydrodynamic watersurface.