APPLICATION OF TRANSIENT ELECTROMAGNETIC PULSE IN DETECTING SUBSURFACE TARGETS

A basic scheme for detecting subsurface targets with nanosecond EM pulse and anespecially developed high quality travelling-wave antenna are described.The antenna is a sortof sector antenna with structure of three layers,which possesses higher radiation efficiency andbetter travelling-wave properties.A fine resolution graphic system and a high speed display areemployed in terminal processing.Metal pipes buried about 1 m under the earth can be detectedand clearly displayed.High resolution and short processing time of the system,compared withother similar devices,make it suitable for engineering use.     

TMS320VC5402在汽车防撞警示雷达中的应用

介绍了TMS320VC5402芯片的主要特点、功能及其结构,给出了采用该芯片的汽车防撞警示雷达信号处理部分的电路原理设计和软件设计。该雷达可对道路前方的目标进行准确地探测、分类、跟踪以及发现危险目标后进行报警。经过多次上车试验,证明其性能优良、工作稳定可靠,在能见度较差的气象环境和复杂的路况条件下能确保机动车辆安全行驶,降低交通事故发生率。     

瞬态电磁脉冲在地下目标探测中的应用

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。