静止衛星ETS-Vの軌道解析に関する一考察

概要

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The orbit analysis of the geosynchronous satellite ETS-V was carried out using a satellite orbit computation program with a new radiation pressure model, and an outline of the program and the results are reported in this paper. Ranges between each tracking station and the satellite ETS-V had been observed using 2GHz radio waves for 48 hours from December 12 to December 15, 1987 at three tracking stations. Range data were picked up every 4 seconds in 10 minites every hour, and 19702 data were analyzed in this study. The results are as follows. (1) Observed accuracy of the range data is 1 or 2 meters. (2) RMS of residuals between observed ranges and calculated ranges is 2.0 meters for 48 hour arc. (3) It is found that averages of the residuals for every hour have variation of 12 hour period and about 1 meter amplitude. An exact cause of the variation in the residuals has not been completely explained, but it seems that a main cause of it is a variation of 12 hour period in earth orientation parameters. It is necessary to verify new radiation pressure model used in this paper by analyzing range data of other satellites. Verifying the model and explaining the cause of variation of 12 hour period are subjects in future.
社団法人日本航海学会の論文
1993-09-25