A fast determination method for the active panel adjustment of a large shaped-surface antenna facing a paraboloid

Abstract

The invention provides an adjustment amount fast determining method of a large-sized shaped surface antenna active panel facing a paraboloid. The method comprises the steps that an antenna model and the support node of an actuator are determined; a shaped surface fitting equation and a target paraboloid standard equation are determined; the node information of all active panels of a shaped reflection surface is extracted; the node information of the e-th panel is extracted; the optimal fitting paraboloid of the active panel is calculated; the actuator support node of the e-th panel is determined; corresponding nodes of a shaped surface antenna panel and the target paraboloid are determined; the actuator adjustment amount and the root-mean-square error of all nodes of the whole adjusted reflection surface are calculated; whether antenna gain satisfies a requirement is judged; and the optimal adjustment amount of the actuator is output. According to the invention, the optimal adjustment amount of the large-sized shaped surface antenna active surface actuator for the paraboloid can be directly and accurately calculated; the electric performance of the antenna is obviously improved; the precise conversion function of the antenna under two different working modes is ensured; and the method has an important academic significance and an engineering application value.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a method for quickly determining the active panel adjustment amount of a large-scale shaped-surface antenna facing a parabolic surface, which is used for actively adjusting the position of the reflective surface panel of a large-scale shaped-surface antenna, so as to realize the antenna panel under two working modes It has important academic significance and engineering application value. Background technique [0002] Large-scale reflector antennas are mainly used in major projects such as communication radar, astronomical observation, and strategic long-distance early warning. Surface requirements, and this also promotes the development of large reflector antennas, shaped surface antennas came into being. Shaped reflective surface antenna is to shape the antenna reflective surface, improve the effective radiation in a certain area by optimizing the shape of the reflective surf...

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Problems solved by technology

Among the existing achievements, in Leng Guojun's "Large Antenna Reflector Shape Conservation and Electromechanical Comprehensive Optimization Design" and Li Hui's "Real-time Compensation Method for Structural Deformation of Shaped Double Reflector Antenna Based on Secondary Surface", the deformation endowed Segmented fitting of the main reflector of the shaped antenna, and on this basis, the sub-surface obtained according to the matching relationship between the main and sub-surfaces is inaccurate, the best electrical performance of the antenna cannot be obtained, and the calculation rate is slow; Yan Feng et al.’s "A Precise Calculation Method for the Accuracy of the Main Surface and the Adjustment of the Primary and Secondary Surfaces of Shaped Card Antennas" is based on the best fitting paraboloid of the shaped surface panel to consider the adjustment of the main and secondary surfaces of the antenna. This method cannot really achieve precise adjustment of the antenna panel, and the electrical performance of the antenna after adjustment cannot guarantee the best

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