| 摘要 |
PURPOSE:To decrease the effect of an attitude error around a yaw axis of a satellite by arranging a primary radiator for communication to one of two foci at reflecting and transmitting sides of a radio wave at a polarized face grid and a primary radiator for an RF sensor to the other focus. CONSTITUTION:The primary radiator 17 for communication is arranged to the focus of a radio wave 22 transmitted through the polarized wave grid 21 and the primary radiator 18 for an RF sensor is arranged to the focus of a radio wave 23 reflected by the grid 21. A radio wave incident from an earth station is reflected in the main reflecting mirror 1 and the sub-reflecting mirror 2 and incident radio waves 4, 5 reach the grid 21. Suppose that the attitude of the satellite and the position of the earth station are as specified, the radio wave reaching the grid 21 is transmitted according to the orthogonal component as the radio wave 22 and the other is reflected as the radio wave 23. The position of the radiators 17, 18 is decided independently and a Null direction of the radiator 18 is placed in the vicinity of the center of the communication beam. Thus, the attitude error around the yaw axis of the satellite is reduced in this way. |
