高精度紧缩场的机械精度检测与电性能验证

栾京东; 李晓星; 周国锋; 王魁奎

高精度紧缩场的机械精度检测与电性能验证

北京航空航天大学机械工程及自动化学院, 北京 100191

基金项目: 北京航空航天大学D2020紧缩场研制项目

详细信息

中图分类号: TB22;TN82
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出版历程
- 收稿日期: 2013-03-29
- 网络出版日期: 2014-01-20

Mechanical accuracy measuring and electrical performance validation for high-precision compact antenna test range

School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 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 26 μm，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.
- 紧缩场 /
- 半光程差 /
- 坐标转换 /
- 型面精度 /
- 电气性能
Abstract: Based on the deterministic basis of the surface accuracy for the antenna, computational modeling with the semi-optical path difference as minimum value was established. As a result, a software program for surface measurement and adjustment of reflector antenna was developed. The surface accuracy of the high-precision reflector antenna was measured and antenna feed was positioned using free fixing. The surface accuracy of central zone for the large parabolic reflector antenna is 26 μm. Electrical performance test results show that the compact range has excellent electrical performance in the frequency of 26~110 GHz, and verify the correctness of the mechanical accuracy test results. This technique not only improves the efficiency of mechanical alignment significantly, but also possesses potential applicable value in engineering.
- compact antenna test range /
- semi-optical path difference /
- coordinates transformation /
- surface accuracy /
- electrical performance

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参考文献(21)

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