宇航计测技术

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声表面波色散延时线激励的高精度时间间隔测量方法

卜朝晖1，2，3 ;杜燕4;黄佩诚1,2   

  1. 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
  • 出版日期:2012-02-15 发布日期:2012-02-15
  • 作者简介:卜朝晖（1971-），男，讲师，主要研究方向：时频信号的检测与处理。

Time Interval Measurement based on Surface Acoustic Wave Dispersive Delay Line Excitation

BU Zhao-hui1,2,3;DU Yan4;HUANG Pei-cheng1,2   

  1. 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
  • Online:2012-02-15 Published:2012-02-15

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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。

关键词: 时间间隔测量, 时间内插器, SAWDDL, 互相关

Abstract: High-precision time interval measurement techniques play a significant role in the economy 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 analysis and experiment, that the time interval measurement method is practical with high precision.

Key words: Time interval measurement, Time interpolator, SAWDDL, Cross correlation

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