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  5. A micro displacement measurement method based on PGC demolulation of space optics

A micro displacement measurement method based on PGC demolulation of space optics

来源 :2016年第二届光子学与光学工程国际会议暨第八届西部光子学会议 | 被引量 : 0次 | 上传用户：rockykimi81
【摘 要】
：
An imporved interferometric system aiming at measuring micro displacement is put forward on the basis of phase generated carrier(PGC)demodulation of space optics.This system can improve the accuracy o
【作 者】
：
Z.Xiong 
【机 构】
：
National University of Defense Technology China
【出 处】
：
2016年第二届光子学与光学工程国际会议暨第八届西部光子学会议
【发表日期】
：
2016年5期
【关键词】
：
PGC micro displacement interferometric system Simulink carrier frequency space o 
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　　An imporved interferometric system aiming at measuring micro displacement is put forward on the basis of phase generated carrier(PGC)demodulation of space optics.This system can improve the accuracy of Absolute Gravimeter(AG)by measuring the amplitude and direction of ground vibration.While the carrier frequency is between 1K and 2K,ground vibration with low frequency(20Hz to 100Hz)and micro vibration amplitude(30nm to 300nm)can be obtained,which satisfies the requirements of AG.
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