The comparison between TWSTFT and GPS time transfer result of PTB-TL LINK

@article{Lin2009TheCB,
  title={The comparison between TWSTFT and GPS time transfer result of PTB-TL LINK},
  author={Shinn-Yan Lin and Wen-Hung Tseng and Huang-Tien Lin and Kai-Ming Feng and Dirk Piester},
  journal={2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time forum},
  year={2009},
  pages={1203-1205}
}
In this paper we compare the PTB-TL time transfer link data of TWSTFT and GPS carrier phase solutions. We investigated in detail the double difference between the time transfer data of TWSTFT and GPS IGSC/TAIPPP. Our results show the PTB-TL link has a conspicuously diurnal effect. The periodicity is almost exact 1 day and the peak-to-peak amplitude is about 1∼1.5 ns. We also found a phase drift which is about 5 ns between TWSTFT and GPS data during a period of 130 days.