The rendezvous docking (RVD) and the space robot technologies are essential for future space activities such as supply, exdhange and retrieve of equipment in space. Especially the capture berting technology is a highly advanced and challenging one. Logistic support of the international space station and in-orbit satellite servicing are the driving mission that shouldbe achieved in early 2000s. Therefore NASDA was to lanunch an engineering test seatllite named ETS-VII in November 1997 to perform the rendezvous docking and the space robot technology experiments and also am to execute the capture erthing experiment. ETS-VII consists of a chaser satellite and a target satellite whose wight are 2.55 and 045 respectively.
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