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A Direction Finding Method Based on Rotating Interferometer and Its Performance Analysis
Dexiu HU Zhen HUANG Jianhua LU
IEICE TRANSACTIONS on Communications
Publication Date: 2015/09/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
Category: Antennas and Propagation
rotating interferometer, direction finding, channel imbalance, performance analysis,
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This paper proposes and analyses an improved direction finding (DF) method that uses a rotating interferometer. The minimum sampling frequency is deduced in order to eliminate the phase ambiguity associated with a long baseline, the influence of phase imbalance of receiver is quantitatively discussed and the Root Mean Square Error (RMSE) of both bearing angle and pitch angle are also demonstrated. The theoretical analysis of the rotating interferometer is verified by simulation results, which show that it achieves better RMSE performance than the conventional method.