Intercomparison Study of Time and Frequency Transfer between VLBI and   Other Techniques (GPS, ETS8(TCE), TW(DPN) and DMTD)
  We carried out the intercomparison experiments between VLBI and other techniques to show the capability of VLBI time and frequency transfer by using the current geodetic VLBI technique and facilities as the summary of the experiments that we carried out since 2007. The results from the two different types of experiments show that the VLBI is more stable than GPS but is slightly noisier than two new two-way techniques (TW(DPN), ETS8(TCE)), and VLBI can measure the correct time difference as same as ETS8(TCE). 
Hiroshi Takiguchi, Moritaka Kimura, Tetsuro Kondo, Atsutoshi Ishii,   Hobiger Thomas, Ryuichi Ichikawa, Yasuhiro Koyama, Yas...
astro-ph.IM