The test of antenna pattern is a key activity in developing a low or ultra-low sidelobe antenna, it calls for positive involvement of structural designer in it.

波瓣测试是低副瓣、超低副瓣天线研制中不可或缺的一个重要环节，结构人员积极介入其中是必要而有益的。

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Multilayer radome will exert a tremendous influence on low sidelobe antenna pattern. Integrated directivity analysis of antenna with radome will be helpful to airborne antenna optimization design.

多层介质天线罩对机载天线低副瓣性能有显著的影响，对带罩天线的方向性进行一体化分析有助于机载天线的优化设计。

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To obtain low sidelobe level, tolerance analysis is applied to the antenna array composed by DAUs and the relationship between DAU features and surface planeness error are studied.

为了确保天线低副瓣指标，需要对由DAU拼装形成的天线阵面进行平面度误差分析，并寻求基本拼装单元DAU结构要素与阵面平面度误差之间的联系。

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