Evaluation of Time Transfer Precision with GPS All in View

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  • 全視法によるＧＰＳ時刻比較の精度評価
  • ゼン シホウ ニ ヨル GPS ジコク ヒカク ノ セイド ヒョウカ

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International time comparison network has been performed by GPS common view to calculate TAI/UTC at BIPM. Recently, since IGS provides precise ephemerides and clock offsets for the GPS satellites, we can calculate time difference between two stations via GPS Time instead of a common GPS satellite. This method is called all in view as contrasted with common view. We compared time transfer precision between all in view and common view with UTC(NPL) and UTC(TL). The results show that all in view better than common view about 1.8 times.

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