圆阵相位干涉仪二维测向解模糊新方法

长短基线结合和模糊角度聚类是圆阵相位干涉仪测向中两种常用的解模糊方法。针对角度聚类解模糊方法存在的不足,在对模糊方向的方向矢量投影在阵列所在平面的分布规律进行分析的基础上,提出一种基于模糊方向矢量投影聚类的解模糊新方法。该方法不但有效地减小了聚类所需的计算复杂度,而且易于选择聚类门限。仿真实验表明,所提出的新方法具有很好的解模糊性能。

A Novel Method for Eliminating Interferometer Phase Difference Ambiguity in Circular Array 2-D Direction Finding

Auxiliary short baselines and clustering ambiguous angles are two usual methods to solve the problem of interferometer phase difference ambiguity in the circular array.In order to overcome the disadvantages of the ambiguous angles clustering,a novel method based on clustering the ambiguous direction vectors' projections is proposed after the analysis of these projections' distribution.The proposed method not only reduces the computational complexity,but also provides a better criterion for the clustering threshold selection. The better performance of the proposed method is demonstrated by the computer simulation.