抄録
Formation flight is a new technology which enables various missions such as high resolution interferometer, virtual antenna instead of huge antenna for a large amount of communication, etc. To realize formation flight, navigation and control of relative position and velocity among related spacecraft are necessary. ETS-VII is a test satellite to perform in-orbit demonstration of autonomous rendezvous docking (RVD) technology. ETS-VII conducted three RVD experiment flights, and flew keeping definite ranges time and again. To evaluate position control accuracy of formation flight, we analyzed flight data of ETS-VII during position keeping flight. Control accuracy depends on navigation accuracy. We present the result in this paper.
