Two-dimensional directional antenna with initial directing function and applicable to high-orbit satellite

Abstract

The invention discloses a two-dimensional directional antenna with an initial directing function and applicable to a high-orbit satellite. The two-dimensional directional antenna comprises an antennabody, an X-Y two-dimensional directing mechanism, a locking and releasing device, a waveguide feeder and a frame. The antenna body and the waveguide feeder are mainly used for receiving radio-frequency signals transmitted by a transmitter and radiating outwards. The X-Y two-dimensional directing mechanism is used for realizing contraction of the antenna in launching and expansion of the antenna after orbit injection and has a function of two-dimensional free rotation. The locking and releasing device is used for realizing contraction and locking of the antenna in a launching stage and capableof directing a set ground station after orbit injection at a fixed point, and the antenna is unlocked and released after orbit injection without affecting the two-dimensional rotation function of theantenna. A thermal control component is mainly used for guaranteeing a great operating temperature environment for moving parts in an in-orbit period, and a motion function of the two-dimensional mechanism is unaffected. The two-dimensional directional antenna is capable of directing a target after orbit injection and capable of rotating two-dimensionally for directional communication after unlocking.

Description

technical field [0001] The invention relates to the technical field of two-dimensional pointing antennas based on high-orbit satellites, in particular to a two-dimensional pointing antenna with an initial pointing function. Background technique [0002] In geostationary orbit communication satellite engineering, it is necessary to develop a high-gain antenna with two-dimensional rotation function for data transmission to the ground. Due to the limitation of the satellite’s installation space on the ground, the antenna needs to be within the narrow space given by the satellite, and then initially point to the ground station after the initial orbit and fixed point, and have the function of free rotation and pointing in two dimensions. [0003] At present, the known data transmission antennas of the same type with a pointing mechanism for satellites use a standard two-dimensional pointing mechanism, which is first folded and locked, unlocked and unfolded when entering orbit, an...

AI Technical Summary

Problems solved by technology

Neither of these two designs can achieve the effect of having basic working capabilities after being put into orbit.

[0005] In addition, after the general satellite antenna is in orbit, there is a common risk: if the unlocking device cannot be deployed normally, it will cause the antenna to be unable to point to the required ground station in orbit, resulting in loss of communication function, and seriously leading to the failure of the entire satellite mission

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