Satellite antenna reflecting surface, processing method thereof, design method of main structure layer of satellite antenna reflecting surface and reconstruction precision verification method of satellite antenna reflecting surface

Abstract

The invention provides a satellite antenna reflecting surface. The reflecting surface is made of a negative Poisson's ratio material or a negative Poisson's ratio metamaterial. Radial tension is applied to the reflecting surface, so that the area size of the reflecting surface is increased, and compared with an existing mechanical reconfigurable reflecting surface, under the condition that the reflecting surface has proper bending rigidity, the in-surface rigidity is small, so that more acting of an actuator is converted into out-surface bending deformation of the reflecting surface, the output force of the actuator is required to be smaller, and the mechanical reconfigurable reflecting surface is more flexible. Therefore, the size and weight of the actuator are reduced, and the overall weight and emission cost of the reflector are reduced. The reflecting surface provided by the invention presents a negative Poisson's ratio form macroscopically, under the action of a single actuator, the whole reflecting surface has larger out-of-plane deformation instead of only influencing the local part, and particularly, when the actuator acts, the reflecting surface can be bent in the same direction in the orthogonal direction to form a bowl shape, so that the reflecting surface is more in line with the shape of a parabolic reflecting surface.

Description

technical field [0001] The invention relates to the technical field of satellite antenna reflection surfaces, in particular to a satellite antenna reflection surface and a processing method thereof, a design method of its main structural layer, and a reconstruction accuracy verification method. Background technique [0002] In the satellite communication system, it is hoped that the antenna beam has an on-orbit reconstruction function, that is, the shaped beam that the antenna generates to cover the service area can change at any time according to the change of communication requirements, and quickly realize the on-orbit beam shape of the satellite antenna. refactor. In addition, if necessary, a spot beam can be generated in any specific area within the service area. The spot beam antenna has a high effective omnidirectional radiation power, can precisely control the pointing area, and can avoid signal interference while obtaining high gain. [0003] The traditional shaped ...

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Problems solved by technology

[0006] The bending stiffness of the metal mesh reconfigurable reflective surface is too small, and the deformation of the surface under the action of the actuator can only change the local area. To make the global surface deform and achieve the target surface reconstruction accuracy, it is necessary A larger number of actuators will increase the weight of the actuator system, thereby increasing launch costs;

[0007] Carbon Fiber Reinforced Silicone Fabric Reconfigurable Reflective Surface Since the Young’s modulus of carbon fiber reinforced silicone fabric is small, to obtain a suitable bending stiffness, it is necessary to increase the thickness of the reflective surface, which also increases the quality of the reflective s

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