[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.11003/JPNT.2022.11.3.191

Performance Estimation of KPST to GPS Time Offset for GNSS Interoperability to Increase Navigational Performance

Lee, Young Kyu (Time and Frequency Group, Korea Research Institute of Standards and Science)
Yang, Sung-hoon (Time and Frequency Group, Korea Research Institute of Standards and Science)
Lee, Ho Seong (Time and Frequency Group, Korea Research Institute of Standards and Science)
Lee, Jong Koo (Time and Frequency Group, Korea Research Institute of Standards and Science)
Hwang, Sang-wook (Time and Frequency Group, Korea Research Institute of Standards and Science)
Rhee, Joon Hyo (Time and Frequency Group, Korea Research Institute of Standards and Science)
Lee, Ju Hyun (Time and Frequency Group, Korea Research Institute of Standards and Science)

Publication Information

Journal of Positioning, Navigation, and Timing / v.11, no.3, 2022 , pp. 191-198 More about this Journal

Abstract

In order to increase the practical use and navigational application performance of the Korean Positioning System (KPS), it is required to provide interoperability with other Global Navigation Satellite System (GNSS). This kind of interoperability can be obtained by broadcasting the time offset between KPS and GNSS using a KPS navigation message. With the assumption that KPS Time (KPST) will be generated by the similar method and equipment of UTC(KRIS), the overall behavior of KPST will be close to that of UTC(KRIS). Therefore, the time offset between KPST and GPS Time (GPST) is estimated by using UTC(KRIS) instead of KPST because KPST can not available at the present time. In this paper, we describe the estimation results of the KPS to GPS Time Offset (KGTO) obtained by using a GNSS time transfer receiver which reference inputs are fed from UTC(KRIS). The estimated KGTO performance is compared to the time offset between UTC(KRIS) and UTC(USNO) which is used to generate GPST and considered as the real GPST. The time offset between UTC(KRIS) and UTC(USNO) is obtained by using the Bureau International des Poids et Mesures (BIPM) Circular T report. From the results, it is observed that KGTO can be estimated under 10 ns with the assumption that KPST will be generated by a similar method of UTC(KRIS) generation.

Keywords

KPS; GNSS; KPST; KGTO; interoperability; system time;

Citations & Related Records

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