A Time Interval Measurement Circuit Based on Delay Line Interpolation
Abstract: Time interval measurement plays an important role in time synchronization system. Precise time interval measurement can improve the accuracy of positioning system. The delay line interpolation method with electron counter is widely used in recent years, which can meet the need of high accuracy as well as large ranging scale. This paper presents a full custom time interval measure-ment chip based on delay line interpolation circuits in 0.18 um COMS technology to satisfy the time interval measurement needs in positioning system and realizes 128-stage delay units. The simulation accuracy of single delay cell is 67 ps and the actual maximum measurement error is approximately 1 ns.
文章引用: 张 炜 , 吴秋莉 , 黄 钰 , 张 春 , 邓雨荣 (2015) 基于延迟线内插法的时间间隔测量电路。 电路与系统， 4， 8-14. doi: 10.12677/OJCS.2015.41002
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