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Analysis of Tropospheric Zenith Path Delay of GPS Code Based Precise Time Comparison Technique

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2012, 17(12), pp.61-69
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

Donghui Yu 1 양성훈 2 도재철 3 이창복 2

1부산가톨릭대학교
2한국표준과학연구원
3국방과학연구소

Accredited

ABSTRACT

This paper shows results of the precise time comparison technique based on GPS code transfer in order to determine the UTC(Universal Time Coordinated) and generate TAI(International Atomic Time). CGGTTS(CCTF Group on GNSS Time Transfer Standards) which is generated by GPS timing receivers is used as the international standard format. For geodetic receivers which provide RINEX formats as GPS time transfer results, ROB(Royal Observatory of Belgium) developed a conversion program, r2cggtts, and have distributed the program to timing laboratories participating in TAI link all over the world. Timing laboratories generate the time comparison results of GPS code transfer by the program and send them to BIPM(Bureau International des Poids et Mesures) periodically. In this paper, we introduce the delay features generated while GPS code is transferred and the calibration methods of them. Then, we introduce the tropospheric delay and analyze the results of Saastamoinen model and NATO(North Atlantic Treaty organization)model. Saastamoinen model is the representative tropospheric zenith path delay model and NATO model is applied to the legacy r2cggtts program.

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