大口径赋形反射面天线的最佳吻合面计算方法  

The Calculation Method of the Best Anastomosing Surface of the Large-aperture Shaped Reflector Antenna

作　　者：李园光 翁子彬[1] Li Yuanguan;Weng Zibin(Xidian university,Xi'an710071)

机构地区：[1]西安电子科技大学,西安710071

出　　处：《测控与通信》2022年第3期40-42,58,共4页

摘　　要：大型天线在重力等作用下引起的反射面的变形导致天线性能下降。针对这一问题,建立了最佳吻合反射面的模型来提高大口径赋形反射面天线的面精度,来改善天线的性能。并且使用拟合抛物面的六参数模型,建立最佳吻合反射面的参数方程。利用最小二乘原理求出了最佳吻合抛物面的六个参数以及实际变形表面与最佳吻合面的均方根偏差。The deformation of the reflecting surface caused by the action of gravity and the like of a large antenna causes the performance of the antenna to decrease.In response to this problem,a model that best fits the reflector was established to improve the surface accuracy of the large-aperture shaped reflector antenna and improve the performance of the antenna.And using the six-parameter model of the fitting parabola established the parameter equation that best fits the reflecting surface.Using the principle of least squares,the six parameters of the best fit paraboloid and the root mean square deviation between the actual deformation surfaceand thebest fit surface areobtained.

关 键 词：最佳吻合 表面误差 最小二乘 

分 类 号：TN8[电子电信—信息与通信工程]