摘要
测量系统包括了接收、发射和反射3个部分。发射系统发出单频无线电波信号,通过反射器反射后,接收系统接收该无线电波信号。在接收端,利用信号反射波相对于发射信号的相位变化,可以对室外远距离大型监测目标的微小位移进行测量,这种微位移测量系统可以用于山体滑坡和桥梁变形等监测,从而预防自然灾害发生。本文介绍了微位移测量的基本原理,同时给出了反射系统和收发系统设计方法。具体系统可以分为模拟和数字2种不同体制。
The measurement system consists of receiver, transmitter and reflector. The wireless microwave is transmitted and received by the transceiver. It is important to monitor the micro-displacement of large outdoor objects in long distance in order to prevent natural disaster, such as the hill landslide and bridge distortion. The micro-displacement can be calculated out from the phase variation of the reflected microwave. This system is composed of two main parts, which are reflector and transceiver. The operation principle and implementation method of this system are introduced. The analog or digital scheme is used to realize the equipment.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2008年第5期1084-1087,共4页
Chinese Journal of Scientific Instrument
基金
重庆市院士专项基金(2005AB8969)资助项目
关键词
微位移
反射器
收发系统
micro-displacement
reflector
transceiver system
