| 声表面波色散延时线激励的高精度时间间隔测量方法 |
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| 引用本文： | 卜朝晖,杜燕,黄佩诚.声表面波色散延时线激励的高精度时间间隔测量方法[J].宇航计测技术,2012,32(1):22-25. |
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| 作者姓名： | 卜朝晖 杜燕 黄佩诚 |
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| 作者单位： | [1]中国科学院上海天文台,上海200030 [2]中国科学院研究生院,北京100039 [3]上海理工大学,上海200093 [4]中国人民解放军61081部队,北京100094 |
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| 摘 要： | 高精度时间间隔测量技术对国民经济与国防建设意义重大,论述了一种新的高精度时间间隔测量方法,可以达到1ps量级甚至更高的测量精度。该方法利用声表面波色散延迟线作为时间内插器,时间内插器起到时间拉伸的作用,从而可以获得多个观测值,由于平均的效果,总的测量误差将被大大降低。理论分析与仿真实验均表明该方法可以达到很高的时间测量精度,是切实可行的。
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| 关 键 词： | 时间间隔测量 时间内插器 SAWDDL 互相关 |
Time Interval Measurement based on Surface Acoustic Wave Dispersive Delay Line Excitation |
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| BU Zhao-hui,DU Yan,HUANG Pei-cheng.Time Interval Measurement based on Surface Acoustic Wave Dispersive Delay Line Excitation[J].Journal of Astronautic Metrology and Measurement,2012,32(1):22-25. |
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| Authors: | BU Zhao-hui DU Yan HUANG Pei-cheng |
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| Institution: | 1. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 ; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100039; 3. University of Shanghai for Science and Technology, Shanghai 200093 ; 4. Chinese People＇s Liberation Army no. 61081, Beijing 100094) |
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| Abstract: | High-precision time interval measurement techniques play a significant role in the econo- my and the military. The paper deals with a novel high-precision time interval measurement method up to 1 ps or even higher precision. The method utilizes a surface acoustic wave dispersive delay line as a time interpolator. The time interpolator can have the form of a time stretcher, so as to get many observations. Thanks to possible averaging, the overall error can be greatly reduced. It＇ s indicated, by the theoretic a- nalysis and experiment, that the time interval measurement method is practical with high precision. |
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| Keywords: | Time interval measurement Time interpolator SAWDDL Cross correlation |
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