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A Comparison of Broadcast and Final Orbits on GPS Delays in GPS-VLBI Hybrid Observation
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  • A Comparison of Broadcast and Final Orbits on GPS Delays in GPS-VLBI Hybrid Observation
  • A Comparison of Broadcast and Final Orbits on GPS Delays in GPS-VLBI Hybrid Observation
저자명
Kwak. Younghee,Cho. Jungho,Kondo. Tetsuro,Takiguchi. Hiroshi,Amagai. Jun,Gotoh. Tadahiro,Sekido. Mamoru,Ichikawa. Ryuichi,Kim. T
간행물명
Journal of the Korean GNSS Society : JKGS
권/호정보
2012년|1권 1호|pp.65-75 (11 pages)
발행정보
한국위성항법시스템학회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

We carry out an error analysis of 24-hour global positioning system (GPS)-very long baseline interferometry (VLBI) (GV) hybrid observation data. In this paper, we focus on the impacts of broadcast and final orbits on the GPS delays of the GV hybrid observation by analyzing the residuals, observed - calculated (O-C) values. The residuals show apparent and consistent biases for L1 and L2 signals, respectively. The scatters of the residuals are around a few nanoseconds. The main cause of those observation errors is the absence of the GPS phase and delay calibration system. Most of the satellites show that the differences between the delays, to which broadcast and final orbits are applied, are about 100 times smaller than the current GV hybrid observation errors. We conclude that GPS delays are not greatly affected by orbit accuracies.