一种基于三层控制探地雷达系统的研究与实现

Research and Realization of a GPR System Based on 3-level Control

为适应探地雷达系统准实时性的要求,考虑到FPGA和DSP各自的特点,提出并实现了一种基于"FPGA+DSP+PC"三层控制的探地雷达系统。该系统采用了并行结构的3级流水线工作方式,提高了系统的吞吐量和处理速度,同时实现了复杂度较高的基于提升小波变换的预处理方法。结果表明,该系统能满足雷达准实时性的要求。最后采用所研制的雷达系统对一已知模型进行探测,探测结果和实际情况基本一致,这说明研制的系统是有效的。

A GPR system based on 3-level of ＂FPGA ＋ DSP ＋ PC＂ has been developed according to the real-time issue which considering of the advantages of FPGA and DSP. The system manages the data flow by 3-level pipeline structure, which increases the throughput of the system and processing speed. A comparatively complicated pre-processing method is based on lifting wavelet transform and realized on DSP, the result shows the system can satisfy the real-time demand. The validity and detection performances of the system are back up by successful experiments on a known model.