Abstract: A gimbal angle calculation method of the dual-axis antenna on the CE-1 satellite is presented for requirements for the earth-point antenna. The range of the dual-axis antenna autonomous tracking to the earth is confirmed according to the condition of the satellite access to the earth and the limits to the rotational angle and angular velocity of the dual-axis antenna. Finally, flight verification results show the validity of the method.

Key words: CE-1 satellite, dual-axis Antenna, gimbal