摘要
可展开天线研制过程中需对其进行地面展开指向精度测试以验证天线在轨实际指向性能。为了实现大型网状天线展开指向精度的地面测量,基于天线实际结构特点,从影响天线展开指向精度的因素入手,在建立的统一卫星坐标系分析模型下采用了一种基于展开臂、反射器和馈源阵等多个组成子部件单独展开指向精度直接测量的模式,并在各子部件测量结果的基础上间接分析得到天线的综合指向精度,最终不仅解决了目前对于大型网状天线展开指向精度在地面无法直接测量的难题,实现了其指向精度的间接测量,而且使综合测量精度优于0.01°,满足了高精度测量需求,研究结果对后续相关类型大尺寸天线展开指向的高精度测量和分析具有重要的指导意义。
The large mesh deployable antenna is an important part of the satellite load,and also is a key product of the new generation of spacecraft.Its actual deployment pointing accuracy affects the antenna installation and on-orbit control compensation strategy,and further affects the accuracy and reliability of the information sent and received by the antenna.Therefore,the development of the deployable antenna requires the test of the deployment pointing accuracy of the antenna.In order to achieve the ground measurement of the deployment pointing accuracy of the large mesh antenna,this paper starts with the factors that affects the deployment pointing accuracy,and proposes an indirect measurement method of the antenna comprehensive pointing accuracy based on the direct measurement mode of the deployment pointing accuracy of multiple components for not only solving the problem that the pointing accuracy of large mesh antennas cannot be measured on the ground,but also realizing the pointing accuracy better than 0.01°.The research results are of significance to the subsequent measurement and analysis of the pointing accuracy of related types of antennas.
作者
蒲理华
刘博学
马小飞
PU Lihua;LIU Boxue;MA Xiaofei(China Academy of Space Technology(Xi’an),Xi’an 710000,China)
出处
《空间电子技术》
2021年第2期66-71,共6页
Space Electronic Technology
基金
航天科技集团公司重大工艺技术研究,(编号:ZDGY2013-24)。
关键词
大型网状天线
展开
指向精度
高精度测量
large mesh antenna
deployment
pointing accuracy
high precision measurement
