高速数据采集和存储

高速数据采集存储是软件无线电的一项关键技术。如果可以将实时信号无误的存储下来 ,则可以在事后采用各种现代信号处理方法对其进行处理 ,得到精确的结果。提出了一种利用软件技术实现的高速数据记录解决方案。它是基于数据采集卡和SCSI硬盘实现的。其特点绕过了文件系统直接以流的方式进行存取 ,使实时数据记录速度达到了40Mb/s。该方案已在某型号特种设备上应用 ,取得了良好的效果。

High Speed Data Acquisition and Storing

High speed data acquisition and storing is a key technique of the software radio. If the real time signal can be recorded without error, then it can be analyzed with many modern methods of signal processing, which will lead to more accurate results. A high speed data recording scheme based on software is suggested in this paper. To realize it one only needs a DAQ card and a SCSI hard disk. Overleaping the file system is the characteristic of this method, which makes the real time data recording speed up to 40Mb/s. This method has been applied to some devices and works well.