摘要
为了更加直接有效地通过调整副面位置来提高双反射面天线的电性能,基于机电耦合思想,建立了副面位置调整量与远场电性能间的直接关系式,分析了副面横向和纵向位置偏差的影响。采用优化方法建立了副面位置调整量优化模型,获得了多个仰角时的副面最佳位置。为实现全仰角范围副面位置的实时调整,对多个仰角副面位置调整参数进行了参数拟合。以26m天线为对象进行了案例分析,其结果表明采用文章所述方法能够直接有效地获得不同工况时的副面最佳调整参数,并实现电性能的最优化,对天线结构重力变形进行有效地主动补偿。
To improve the electromagnetic performance of the dual-reflector antennas more directly and effectively by adjusting the subreflector position,the direct relation between subreflector position adjustment parameter and electrical performance is developed based on electromechanical couple theory.The influence of the lateral and axial deviation of subreflector position is analyzed.The optimization model of subreflector position adjustment parameter is established,and then the optimal subreflector position parameters at some elevation angles are obtained,which are fitted to achieve subreflector position real-time adjustment at the all elevation angles range.The method is applied a 26 mreflector antenna.Result shows that the proposed method can obtain the optimal subreflector adjustment parameters directly and effectively,optimize electrical performance,and active compensate effectively the antenna structure gravity deformation.
作者
项斌斌
王从思
王伟
连培园
张树新
保宏
XIANG Binbin;WANG Congsi;WANG Wei;LIAN Peiyuan;ZHANG Shuxin;BAO Hong(Key Laboratory of Electronic Equipment Structure Design of Ministry of Education, Xidian University, Xi＇an 710071 , China;Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011 , China)
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2018年第3期489-497,共9页
Systems Engineering and Electronics
基金
国家重点基础研究发展计划(973计划)(2015CB857100)
国家自然科学基金(11403089
51475349
51490660
51522507)
陕西省科技新星项目(2016KJXX-06)
高等学校博士学科点专项科研基金(20120203110012)
中国科学院天文站设备更新及重大仪器设备运行专项经费资助课题
关键词
双反射面天线
机电耦合
主动补偿
副面位置调整
dual-reflector antenna
electromechanical coupling theory
active compensation
subreflectorposition adjustment
