This paper describes the principle of antenna stabilization platform of airborne SAR briefly, and then introduces an ATS (Automatic Test System) for such platform.

该文简述了机载SAR天线稳定平台的工作原理，介绍了针对某型机载SAR天线稳定平台的新型自动化测试系统。

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First this paper introduced the fundamental principle of antenna, such as dipole, fundamental electrical parameter, principle of antenna array, theory of space propagation, etc.

本文首先介绍了对称振子，天线基本电参数，天线阵原理，空间波传播理论等天线基本原理。

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The directivity of curvilinear dipole is analysed by the basic principle of antenna array, the relationship between the directivity and the length of curvilinear dipoles is obtained.

本文利用天线阵基本原理近似分析了曲线振子的方向性系数，得到了方向性系数随曲线振子长度的变化关系，为曲线振子天线的进一步研究及设计提供参考。

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