基于柔性测试技术的高精度水下声学采集与发射系统设计

Design and Implementation of High Precision Acquisition and Launching Underwater System Based on Flexible Technology

水下声学采集与发射在水声测试系统中起着举足轻重的作用,以往的测试设备往往只针对水下水声信号的原始数据采集,而在岸基与水下系统的授时、定时以及同步性上缺乏可靠的技术手段予以保证,同时也存在测试功能针对性强、扩展性差等缺点;文章提出了基于柔性测试的高精度水下声学采集与发射技术,阐述了其基本的测试原理、关键技术实现以及软硬件实现方法,完成了岸基与水下测试系统授时误差小于200ns,定时同步误差小于100ns,最大6通道,每通道采样不小于200KS/s的水听器采集且同步2通道换能器任意波形输出的硬件功能,软件上实现了任务列表自动解析、基于岸基时间服务器的自动数据采集与发射功能,具有精度高、功能全面、智能化程序高等特点。

The data acquisition and launching has been important in underwater system. The traditional test system has some disadvanta ges of high pertinence, bad compatibility and too much working load. A high precision system is promoted based on flexible testing technolo- gy. Its testing scheme and measurement is introduced including the core technology in hardware and software. The timing service bias is less than 200 ns and timing Synchronization bias is less than 100 ns between the shore and underwater systems. Six channels （more than 200 KS/ s sampling rate） have been achieved, which are also Synchronous with two channels of launching data. This testing system has the advanta- ges of high precision, extensibility and intelligence based on task resolved and executed automatically.