基于全空域跟踪的椭球型天线桁架设计及标校方法  

Research on Design and Calibration Technology of Spatial Ellipsoid Antenna Truss Based on Global Track

作　　者：刘健泉 周书中[1] 吴海洲[1] 赵晓阳[1] 李扬 郭向峰 LIU Jianquan;ZHOU Shuzhong;WU Haizhou;ZHAO Xiaoyang;LI Yang;GUO Xiangfeng(The 54th Research Institute of CETC,Shijiazhuang 050081,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2023年第1期168-174,共7页Radio Engineering

基　　金：国家部委基金资助项目。

摘　　要：为满足某卫星工程的测控需求,进一步提高测控网综合测控能力和覆盖范围,提出了一种新型空间椭球天线桁架结构形式及标校方法,满足了全空域、大跨度和高精度的要求。依据大跨度空间桁架理论及有限元分析结果,采用单层空间椭球面网壳的天线桁架构型,通过优化杆件截面、网架形式、跨度和高度等参数实现了对天线桁架承载力的有效分配,合理设计了空间椭球桁架结构及连接方式,并进行了椭球型天线桁架的加工。通过现场测试标定与系统联调,设计加工的椭球型天线桁架达到了系统整体的接收G/T值、第一旁瓣、差波束零深、位置精度和高刚度要求,解决了大型阵列长期运行中定期频繁标校难题,对大尺度阵列天线桁架的设计具有一定的参考意义。In order to meet the measurement and control requirements of a specific satellite project, and to further improve the integrated measurement and control capabilities and coverage of measurement and control network, a new spatial ellipsoidal antenna truss structure and calibration method is proposed, which meets the requirements of global track, large span, and high precision. Based on the large-span spatial truss theory and the results of finite element analysis, an antenna truss scheme of single-layer space ellipsoid reticulated shell is adopted, and effective distribution of the bearing capacity of the antenna truss is realized by optimizing the parameters such as the section of the rod, the form of the grid, the span and the height. In view of the above method, the space ellipsoid truss structure and the connection form are reasonably designed and processed in the factory. Through on-site calibration and system joint examination, the results show that the spatial ellipsoid antenna truss meets the system design requirements in terms of G/T value, first sidelobe, differential beam zero depth, position accuracy and high rigidity. The method solves the problem of regular and frequent calibration of large array antenna, and provides certain reference for the design of large-scale array antenna truss.

关 键 词：全空域跟踪 空间天线桁架 高精度 阵列标校 有限元分析 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]