Abstract

Dating back to the middle of the early 1990's, the Engineering Test Satellite VI (ETS-VI) was developed with a strong intention to establish the AOCS for the applications satellites. Although injection of the ETS-VI into the GTO was failed, the developed AOSC had proven its performance and at the same time revealed some technical issues to be solved for the real applications. After the ETS-VI, the ETS-VII was launched and completed the intended missions on the rendezvous and docking as well as the robotics experiments. To follow these tests satellites, the Advanced Earth Observation Satellite I and II were launched and the AOCS of these had proven its performance in spite of the fact that the satellites missions were terminated before the end of life because of the failures in the electric power systems. Now a small satellite called Micro-LabSat-1 is in operation to continue the AOCS experiments with some ambitious missions. This overview will cover the history and technical issues of the efforts made by NASDA (now JAXA) and the related industries. This will disclose the reality of the control technologies of Japan in these two decades.

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