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Effect of Facet Displacement on Radiation Field and Its Application for Panel Adjustment of Large Reflector Antenna 被引量:3
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作者 Wei WANG Peiyuan LIAN +2 位作者 Shuxin ZHANG Binbin XIANG Qian XU 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2017年第3期578-586,共9页
Large reflector antennas are widely used in radars, satellite communication, radio astronomy, and so on. The rapid developments in these fields have created demands for development of better performance and higher sur... Large reflector antennas are widely used in radars, satellite communication, radio astronomy, and so on. The rapid developments in these fields have created demands for development of better performance and higher surface accuracy. However, low accuracy and low effi- ciency are the common disadvantages for traditional panel alignment and adjustment. In order to improve the surface accuracy of large reflector antenna, a new method is pre- sented to determinate panel adjustment values from far field pattern. Based on the method of Physical Optics (PO), the effect of panel facet displacement on radiation field value is derived. Then the linear system is constructed between panel adjustment vector and far field pattern. Using the method of Singular Value Decomposition (SVD), the adjustment value for all panel adjustors are obtained by solving the linear equations. An experiment is conducted on a 3.7 m reflector antenna with 12 segmented panels. The results of simulation and test are similar, which shows that the presented method is feasible. Moreover, thediscussion about validation shows that the method can be used for many cases of reflector shape. The proposed research provides the instruction to adjust surface panels efficiently and accurately. 展开更多
关键词 Reflector antennas Surface accuracy -Radiation field - Reflector antenna mechanical factors Electromechanical effects - Panel adjustment - Singularvalue decomposition (SVD)
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