基于导航卫星信号的采集系统设计与实现

摘要

A satellite signal data acquisition system integrated with functions of data acquisition,signal processing, data storage and signal playback, based on the demands of the navigation satellite signal monitoring. The system' s structure is based on PCIe and its full - duplex bandwidth can achieve 900MB; the data acquisition module can deal with 480MB sustained data stream and extra 480MB burst data stream; the signal processing module adopt FPGA + DSP to operate data; the data storage structure is complete solid, which replaces the traditional magnetic disk by flash array;the signal playback module playback data with bandwidth 960MB through PCIe. Hie system can apply for fields including radar and detection with the merits of high performance and high integrity.%针对导航卫星信号监测的新要求,提出一种集成了数据采集、处理、存储和回放功能的一体化卫星信号采集系统.该系统采用PCIe架构,系统带宽可达到全双工900MB;数据采集480MB持续数据,以及480MB突发数据；数据处理采用FPGA+ DSP联合架构,完成对数据实时处理；存储采用全固态结构,用Flash代替传统的磁盘存储；并且能够通过PCIe接口完成960MB带宽的数据回放.该系统具有性能高、集成度高的优点,可以运用在雷达、侦查等高端领域.