伪随机序列编码脉冲信号在探地雷达中的应用研究  

The Study of Pseudo Random Sequence's Application to GPR

作　　者：张群英[1] 方广有[1] 

机构地区：[1]中国科学院电子学研究所,北京100190

出　　处：《电子与信息学报》2011年第2期424-428,共5页Journal of Electronics & Information Technology

摘　　要：探测深度是探地雷达最为重要的指标之一,在一定分辨率情况下如何增加探测深度一直是国内外研究的热点问题。该文对伪随机序列编码脉冲信号在探地雷达中的应用进行了研究,分析了伪随机序列编码脉冲信号的特点以及探地雷达对发射信号的应用需求,介绍了一个采用m序列二相脉冲调制的探地雷达实验系统,给出了该系统的测试和实验结果并对实验结果进行了理论分析,实验结果与理论分析十分吻合。分析与实验结果表明:在同样条件下,伪随机序列编码脉冲探地雷达较传统的Impulse探地雷达可以实现更大的探测深度,可以满足考古、地质勘察等深层探测应用的需求。The sounding depth is one of the most important parameter of GPR（Ground Penetrating Radar）,how to expand detectable range under a given resolution is a concern issue in the field of GPR all over the world.The application of Pseudo Random Binary Sequence（PRBS） to GPR is studied in this paper.The advantages of PRBS and the demands of GPR are analyzed.A GPR experiment system adopting m-sequence is described.Some experimental data of this system and the theoretical analysis are presented.The experiments results are very coincide with theoretical analysis.This PRBS GPR can achieve deeper detectable range than Impulse GPR under the same parameters is proved with the result of analysis and experiment,and it can meet the demands of the archaeology and geology＇s deep sounding.

关 键 词：探地雷达 冲激雷达 伪随机序列 非周期自相关函数 冲激函数 

分 类 号：TN959.3[电子电信—信号与信息处理]