The influence of thermal deformation on the performance of reflector antennas has become increasingly significant with the increasing aperture and working frequency.The use of a thermal compensation database is an efficient method to compensate for the deformation caused by the non-uniform temperature distribution.However,how to efficiently and accurately match and call the database remains as one of the tough challenges for the antenna thermal compensation system to achieve real time compensation.Therefore,this study proposes a data match and call method for the thermal compensation database of the reflector antenna,matching the database from three aspects:the overall rms match of temperature data,the similarity area match of each data sample,and the key area match of key structural positions.The validation of this method is demonstrated in an example.The difference between the pointing adjustment amount calculated by the matched data and the collected data was found to be less than 1″,which satisfied the requirements of practical engineering,thus achieving real-time thermal compensation of the antenna.

Yuefei Yan;Song Xue;Xinlan Hu;Peiyuan Lian;Yan Wang;Lin Li;Qian Xu;Na Wang;Wulin Zhao;Yuanpeng Zheng;Congsi Wang

Key Laboratory of Electronic Equipment Structure Design,Ministry of Education,Xidian University,Xi'an 710071,China;School of Information and Control Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;School of Physics and Technology,Xinjiang University,Urumqi,830046,China;Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi 830011,China;The 39th Research Institute of China Electronics Technology Group Corporation,Xi'an 710065,China;The 54th Research Institute of China Electronics Technology Group Corporation,Shijiazhuang 050081,China

天文和天体物理学研究

[1]Yuefei Yan;Song Xue;Xinlan Hu;Peiyuan Lian;Yan Wang;Lin Li;Qian Xu;Na Wang;Wulin Zhao;Yuanpeng Zheng;Congsi Wang-.Accurate Data Match and Call Method for the Thermal Compensation Database of the Reflector Antenna)[J].天文和天体物理学研究,2022(05):98-108

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