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根据天线型面精度的确定依据,建立了以半光程差为最小量的型面精度计算模型,据此编写了天线面板测调程序,对高精度紧缩场的型面精度进行了检测,并采用自由拟合的方法对馈源进行了定位,通过机械精度检测,该紧缩场反射面型面静区精度达到26μm,机械精度达到理论和设计要求.最终的电气测试结果表明该紧缩场在26~110 GHz时具有优良的电气性能,验证了天线机械精度检测结果的正确性.该方法使机械装调效率显著提高,具有重要的工程应用价值.
According to the determination of the accuracy of the antenna profile, a profile accuracy calculation model based on the minimum half optical path difference was established. Based on this, the antenna panel adjustment program was programmed, and the profile accuracy of the high precision compression field was tested. The free-fit method was used to locate the feed, and the precision of the static area of the reflecting surface of the compacting field reached 26μm, the mechanical precision reached the theoretical and design requirements through the mechanical precision testing.The final electrical test results show that the compacting field is 26 ~ 110 GHz with good electrical performance, verify the accuracy of the antenna mechanical test results.This method can significantly improve the efficiency of the mechanical loading and has important engineering application value.