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首页> 外文会议>Conference on Passive Millimeter-Wave Imaging Technology VI and Radar Sensor Technology VII Apr 23-24, 2003 Orlando, Florida, USA >Use of the envelope detection method to detect micro-Doppler
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Use of the envelope detection method to detect micro-Doppler

机译：使用包络线检测方法检测微多普勒

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摘要

Georgia Tech Research Institute (GTRI) was tasked by the U.S. Department of Transportation (USDOT), Federal Highway Administration (FHWA), to test the Safety Warning System~R (SWS) for application as an in-vehicle communications system. In addition to the communications function, the system has a 24 GHz homodyne Doppler radar function that provides the system's micro-controller with traffic counts and speed information on passing vehicles. One task was to use the homodyne radar to see if the resonant frequency of an 18 wheel tractor trailer could be determined while the truck was at a distance from the radar (Greneker, et al. This led to a study of additional methods to detect low frequency resonance effects excited by the interaction between the highway and the suspension system of a tractor trailer when the body induced Doppler signal is many orders of magnitude larger than the resonance frequency of interest. This paper describes a method that the authors call the "envelope detection" method. This micro-Doppler extraction technique has proven useful to extract small vibration and resonance induced signals in the presence of a large Doppler signal from the radar energy reflected from the radiator, hood and cab of the tractor trailer used in testing.
机译：佐治亚理工学院（GTRI）受美国交通部（USDOT），联邦公路管理局（FHWA）的委托，对安全预警系统（R）（SWS）进行测试，以用作车载通讯系统。除了通信功能外，该系统还具有24 GHz零差多普勒雷达功能，该功能为系统的微控制器提供经过车辆的流量计数和速度信息。一个任务是使用零差雷达来查看卡车在距雷达一定距离的情况下是否可以确定18轮牵引车拖车的共振频率（Greneker等人。这导致了对检测低速卡车的其他方法的研究。当人体感应的多普勒信号比感兴趣的共振频率大几个数量级时，公路和牵引车挂车的悬架系统之间的相互作用所激发的频率共振效应。本文介绍了一种被称为“包络检测”的方法这种微多普勒提取技术已被证明可用于在测试中使用的牵引车的散热器，发动机罩和驾驶室反射的雷达能量中，在大多普勒信号存在的情况下，提取出小的振动和共振感应信号。

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