Abstract
Engineering Test Satellite-VII (ETS-VII) is the test satellite to demonstrate and verify rendezvous docking technology. After success in an autonomous rendezvous docking in the 1st and 2nd experiment flights in 1998, we performed remote pilot rendezvous experiment by ETS-VII in Oct. 1999. In the experiment, ETS-VII was controlled by a ground pilot via Tracking and Data Relay Satellite (TDRS). To overcome long time delay and poor information on thruster acceleration, the ground pilot predicted the changes of position and velocity after thruster firing, and controlled the Chaser satellite. In this paper, we present the result and evaluation of the remote pilot experiment. It could be shown that remote pilot was very useful to control rendezvous spacecraft with long time delay and/or with unknown control characteristics.
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