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Optimization of the efficiency of large deployable reflectors by measuring the error around the feed
Acta Astronautica ( IF 3.5 ) Pub Date : 2022-07-22 , DOI: 10.1016/j.actaastro.2022.07.022
Pietro Davide Maddio , Pietro Salvini , Rosario Sinatra , Alessandro Cammarata

Large Deployable Reflector (LDR) systems are commonly used as mesh reflectors for large aperture space antennas in aerospace applications since they provide affordability while guaranteeing at the same time a high gain and a high directivity. To improve the surface accuracy several methods have been studied, most of which measure the distance between the cable-net system that forms the reflector surface and the desired paraboloid. In this paper we want to improve the reflector’s ability to convey a greater concentration of reflected rays in the direction of the feed. To deal with this issue, a numerical optimization algorithm has been proposed, both in the case of prime-focus reflector and with offset. During the explanation of the algorithm, numerical examples will be reported, thus demonstrating the goodness of the algorithm, and its effectiveness will also be demonstrated using the Monte Carlo method.



中文翻译:

通过测量馈源周围的误差来优化大型可展开反射器的效率

大型可展开反射器 (LDR) 系统通常用作航空航天应用中大孔径空间天线的网状反射器,因为它们提供了可负担性,同时保证了高增益和高方向性。为了提高表面精度,已经研究了几种方法,其中大多数方法是测量形成反射器表面的索网系统与所需抛物面之间的距离。在本文中,我们希望提高反射器在馈送方向上传输更大浓度反射光线的能力。为了解决这个问题,已经提出了一种数值优化算法,无论是在主焦点反射器的情况下还是在偏移的情况下。在算法的解释过程中,将报告数值例子,从而证明算法的优点,

更新日期:2022-07-22
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