高精度的来波方位估计

On High Precision DOA Estimation

给出了干涉仪测向的基本原理和数学模型,对干涉仪测向的精度进行了一般性讨论。指出提高测向精度的有效途径是增加基线长度。主要研究长短基线组合方式、测向算法及系统性能分析,重点在于克服测向系统的测向模糊性和提高测向精度。给出了理论上的高精度干涉仪测向算法如何在实际工程中的应用及系统的实现方法以及部分实验数据。

The basic principle and the mathematical model of direction finding by method of interferometer are introduced in this paper. The factors that affect the accuracy of the interferometer used for direction finding are investigated generally. And an effective way to improve accuracy that increases the length of baselines is introduced. The method of the combination of long baseline and short baseline, the algorithm and the performance of system are studied and the discussion is focused on resolving the ambiguities of Angle of Arrival and increasing the accuracy of direction finding system. Lastly the implementation of the system in practical applications and some experimental data are presented.