静止衛星による測位システム-II : VSATによる衛星位置測定システム構成

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A simple satellites monitoring system comprising 3 VSAT's is proposed to determine the three-dimensional position of JCSAT-1 communication satellite, locates at 152°on a geostationary orbit and is operated in Ku band. One VSAT is a master at Tokyo University of Mercantile Marine and the rest are slaves at Hokkaido and Kyushu Universities. The range to the satellite from the slave station is observed at the master station every 9.6ms from the arrival time of the range finding pulse of the 31-bit PN series of 64 kbps. It is transmitted from the master station and travels twice between master and slave stations via the satellite. We measure the ranges from three earth stations to the satellite by switching the reception frequency at the master station one by one and deduce the satellite position. The radius of short axis of the 95% error ellipsoid, which represented the distribution of positioning points, was 44m in the present experiment with the ranging accuracy of 2m from the master and 3.2m from slave stations. We also estimated the positioning accuracy with three earth stations at Wakkanai, Naha and Chichi Jima, using the same ranging accuracy. The estimation is also tried of the positioning accuracy on the earth in 3 geostationary satellites system with the satellites monitoring system described here. It shows that the accuracy of less than 20m is attainable in the Japanese Islands and their surrounding waters.
社団法人日本航海学会の論文
1997-03-25

静止衛星による測位システム-II : VSATによる衛星位置測定システム構成

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