Experimental Measurement and Analysis of Pulse Transmission Source of GPR

摘要：

　　According to the transmission pulse requirements of the impulse-GPR which probes the objectives of shallow soil,a transmission circuit is designed and made.On the basis of the transistor avalanche theory,avalanche transistor and RF transistor are used to generate the impulse-GPR transmission pulse as the core transistors.Trigger pulse is the square wave which is produced by FPGA as the trigger of whole system,its duty ratio under 10% and its frequency from 50 kHz to 500 kHz.As the results of simulation and actual measurement shown,single transistor avalanche circuit and four transistors cascade avalanche circuit can produce a narrow pulse with its pulse width from 1.337ns to 42.91ns.The results meet the transmission pulse requirements of impulse-GPR which probes the objectives of shallow soil.

关键词： Narrow pulse Transmission circuit Marx circuit GPR

作者: Hui Xu Guorui Wu

作者单位: School of Information Science & Engineering,Shenyang University of Technology,Shenyang,Liaoning,110870,China

会议类型: 国际会议

会议名称: the 2012 2nd International Conference on Frontiers of Manufacturing Science and Measuring Technology (第二届制造科学与检测技术国际会议(ICFMM 2012))

会议地点: 西安

会议语种:英文

页码: 1365-1368

在线出版日期: 2012-06-12（万方平台首次上网日期，不代表论文的发表时间）