中国机械工程2026，Vol.37Issue(3)：595-603,9.DOI:10.3969/j.issn.1004-132X.2026.03.009
随机风载下双偏置格里高利天线指向误差建模与应用
Modeling and Applications for Pointing Errors of Dual-offset Gregorian Antenna under Random Wind Loads
摘要
Abstract
Investigation of pointing errors of dual-offset Gregorian antenna primarily relied on simula-tion software,which was computationally inefficient and not conducive to antenna performance optimiza-tion and wind disturbance rejection design.Based on the pointing error model of a Cassegrain antenna,a pointing error model was developed for dual-offset Gregorian antenna with similar formal structure.The model was validated through electromagnetic simulations,and the results demonstrate that the developed pointing error model is both highly accurate and applicable,providing a basis for establishing a unified theo-retical framework for both types of antennas.Taking the dual-offset Gregorian antenna element of the square kilometre array(SKA)as an example,the pointing error variation were analyzed by combining an-tenna structural deformation data and the pointing error model under different random wind loads and differ-ent attitudes.The results indicate that the established error model may rapidly assess the pointing errors of dual-offset Gregorian antennas under random wind loading.关键词
双偏置格里高利天线/随机风载/风致响应/小型风洞实验/指向误差Key words
dual-offset Gregorian antenna/random wind load/wind-induced response/small wind tunnel experiment/pointing error分类
信息技术与安全科学引用本文复制引用
刘慧姗,裴佳星,吴锦辉,张磊,连培园,陶友瑞..随机风载下双偏置格里高利天线指向误差建模与应用[J].中国机械工程,2026,37(3):595-603,9.基金项目
国家自然科学基金(U23A6017) （U23A6017）
邯郸市科学技术研究与发展计划(23422304057) （23422304057）
