Title :
Accurate time interval measurement method based on Vernier caliper principle
Author :
Song, Yuanyuan ; Zeng, Dazhi ; Tian, Yonghua
Author_Institution :
Radar Res. Lab., Beijing Inst. of Technol., Beijing, China
Abstract :
An accurate method by using main clock and vernier clock is introduced to measure time interval. Vernier clock is used to count the time interval. The corresponding count results are sampled by the main clock. The relationship between the sum of sampling sequence and time interval is investigated. By utilizing the sampling sequence, we can calculate the precise time difference easily. The implementation steps are listed and the resolution is analyzed.
Keywords :
clocks; signal sampling; time measurement; Vernier caliper principle; accurate time interval measurement; sampling sequence; Clocks; Counting circuits; Frequency measurement; Radar applications; Radar measurements; Sampling methods; Satellites; Signal resolution; Spaceborne radar; Time measurement; Vernier caliper principle; sampled sequence; time domain measurement; time interval;
Conference_Titel :
Image Analysis and Signal Processing (IASP), 2010 International Conference on
Conference_Location :
Zhejiang
Print_ISBN :
978-1-4244-5554-6
Electronic_ISBN :
978-1-4244-5556-0
DOI :
10.1109/IASP.2010.5476057
