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http://dx.doi.org/10.5139/JKSAS.2021.49.6.515

Precision Improvement Technique of Propagation Delay Distance Measurement Using IEEE 1588 PTP  

Gu, Young Mo (Inha Technical College)
Boo, Jung-il (DANAM SYSTEMS)
Ha, Jeong-wan (DANAM SYSTEMS)
Kim, Bokki (DANAM SYSTEMS)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.49, no.6, 2021 , pp. 515-519 More about this Journal
Abstract
IEEE 1588 PTP is a precision time protocol in which two systems synchronize without the aid of GPS by exchanging packets including transmission/reception time information. In the time synchronization process, the propagation delay time can be calculated and the distance between the two systems can be measured using this. In this paper, we proposed a method to improve the distance measurement precision less than the modulation symbol period using the timing error information extracted from the preamble of the received packet. Computer simulations show that the distance measurement precision is proportional to the length of the preamble PN sequence and the signal-to-noise ratio.
Keywords
IEEE 1588 PTP; Propagation Delay; Timing Error; Distance Measurement; Global Positioning System;
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