A Direction Finding Method Based on Rotating Interferometer and Its Performance Analysis

Dexiu HU  Zhen HUANG  Jianhua LU  

Publication
IEICE TRANSACTIONS on Communications   Vol.E98-B   No.9   pp.1858-1864
Publication Date: 2015/09/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
rotating interferometer,  direction finding,  channel imbalance,  performance analysis,  

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Summary: 
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.