拖曳线列阵声呐数据录取系统的设计与实现

为了满足拖曳线列阵声呐系统数据传输实时性高、数据量大的要求, 设计了一种基于PCI总线的数据录取系统。硬件方面, 系统采用PCI9054高效率DMA传输技术与外扩大容量FIFO相结合的方案, 实现了高速、连续的声呐数据传输; 软件方面, 系统结合基于双层乒乓结构的内存映射文件和多线程技术实现了数据的实时存储、处理及显示。模拟及现场实验结果表明, 该录取系统能稳定、可靠地实现声呐数据的实时存储、波形回显等功能, 能满足大规模声呐系统数据录取的要求。

Design and implementation of towed linear array sonar data recording system

In order to meet the requirements of towed linear array sonar, including real-time and large amount of data, the essay designed a towed line array sonar data recor-ding system based on PCI bus. In the hardware aspect, the sonar data recording system combined DMA transmission technology of PCI bridge 9054 with a large capacity FIFO, so that it could transmit the sonar data at high speed continuously; In the software aspect, the combination of double-ping-pong memory mapping and multi-thread technology realized real-time data storage, processing and display. Simulation and experimental results show that the recording system has achieved sonar data real-time storage, waveform display and other functions with stability and reliabi-lity, and can meet the data recording requirements of large-scale sonar exploration system.