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Evaluation of repeatability of baseline lengths in the VLBI network around the Tokyo metropolitan area
Author(s) -
Kondo Tetsuro,
Kurihara Noriyuki,
Koyama Yasuhiro,
Sekido Mamoru,
Ichikawa Ryuichi,
Yoshino Taizoh,
Amagai Jun,
Sebata Kohichi,
Furuya Masato,
Takahashi Yukio,
Kiuchi Hitoshi,
Kaneko Akihiro
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/98gl50566
Subject(s) - very long baseline interferometry , repeatability , baseline (sea) , geodesy , standard deviation , metropolitan area , remote sensing , environmental science , geology , geography , statistics , mathematics , oceanography , archaeology
Since 1995, VLBI measurements using fixed VLBI stations around the Tokyo metropolitan area have been continually producing data of station positions and baseline lengths. The accuracy of baseline length measurements is evaluated in terms of repeatability, conventionally defined as a standard deviation of those obtained by five continuous sessions. Continuous improvement both in system hardware and in the observation method have resulted in a remarkable improvement in measurement accuracy. Repeatability reaches about a 2‐mm level in baseline length in our VLBI network.