摘要
本文描述了纳秒电磁脉冲在探测地下目标中的基本方案;研制了一种高质量行波天线。作者采用的是三层结构的扇形天线,其辐射效率高,行波特性好。终端采用快速、高分辨率的图形显示系统,对埋地深度在1m左右的金属管道,能清晰的显示,并打印出目标特性。整个装置与国内外同类装置相比,分辨率高,终端处理时间短,符合工程需要。
A basic scheme for detecting subsurface targets with EM pulse of nanoseconds and an especially developed travelling-wave antenna of high quality are described. The antenna is a sort of sector antenna with structure of three layers, which possesses higher radiation efficiency and better travelling-wave properties. A fine resolution graphic system and a high speed display are employed in terminal processing. Metal pipes burried about 1m under the earth can be detected and clearly displayed. High resolution and short processing time of the system, compared with other similar devices, make it suitable for engineering use.
关键词
地下目标探测
行波天线
成象
雷达
Subsurface target detection
Transient EM pulse
Travelling-wave antenna
Target imaging system
