Physics
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984rarlr..30..185s&link_type=abstract
Radio Research Laboratories, Review (ISSN 0033-801X), vol. 30, June 1984, p. 185-198. In Japanese, with abstract in English.
Physics
Geosynchronous Orbits, Orbit Calculation, Satellite Orbits, Synchronous Satellites, Very Long Base Interferometry, Accuracy, Data Links, Radio Tracking, Satellite Observation
Scientific paper
An experiment was carried out to track a geosynchronous satellite by Delta-VLBI method for 17 hours in the 4 GHz frequency band. A real time VLBI system with the baseline of 46 km was used, in which the observed data at the substation were transmitted to the main station via a microwave data link. Seven quasars were observed as reference sources. The geometrical delay was estimated within 0.3 nsec in the case of the satellite observations and within 10-140 nsec in the case of the quasars. The final accuracy of the Delta-VLBI observables was approximately 2 nsec (60 cm). The satellite orbit was determined to the accuracy of 100 m using the Delta-VLBI observables in addition to range and angle data which were obtained by a conventional radio tracking method. It was proved that Delta-VLBI with appropriate baselines is a prospective method of precise tracking of a geosynchronous satellite for highly accurate orbit determination.
Arimoto Yoshinori
Isogai Mistuo
Kozono S.-I.
Nagai Seiji
Shiomi T.
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