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本文敍述用于提高直径为40英尺的ALCOR雷达天线指向精度所用的误差模型的研究。该项计划的目标是达到50微弧度(10秒)的指向精度。提出的这种误差模型采用了实时测量、结构分析、标定测量和回归分析等方法。讨论了选定这些方法的组合时所作的权衡比较。俯仰结构和叉臂结构的结构分析是分別完成的。由于俯仰结构的规模和连接复杂,采用子结构法来分析它。
This article describes the study of error models used to improve the pointing accuracy of ALCOR radars with a diameter of 40 feet. The goal of this program is to achieve a pointing accuracy of 50 microradians (10 seconds). The proposed error model uses real-time measurement, structural analysis, calibration measurement and regression analysis. The trade-off comparison when choosing combinations of these methods is discussed. Structural analysis of pitch structure and yoke structure are completed separately. Because of the size and connection of the pitch structure, it is analyzed by substructure method.