Transactions of Nanjing University of Aeronautics & Astronautics
DOA Estimation Algorithm with Non-uniform Motion Synthetic Linear Array
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Abstract:
Synthetic aperture using moving array is widely used for extending array aperture and improving direction of arrival (DOA) estimation performance. This paper proposes a DOA estimation algorithm with non-uniform motion synthetic linear array. The proposed method successively estimates the phase correction factors of the signals received by a moving linear array and then compensates the manifold to construct a much larger synthetic array. With the synthetic array, the DOA estimation performance is efficiently improved. Besides, due to the successive phase correction factors estimation, the proposed method can be applied regardless of the configuration and motion of the linear array and can release the request of temporal signal coherence. The simulations validate the effectiveness of the proposed method.
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This work was supported by the Natural Science Foundations of China (Nos.61371169, 61601167), the Open Research Fund of National Mobile Communications Research Laboratory of Southeast University (No.2015D030), the Jiangsu Natural Science Foundations (No.BK20161489), the Open Research Fund of State Key Laboratory of Millimeter Waves of Southeast University (No.K201826), and the Fundamental Research Funds for the Central Universities (No.NE2017103).
Clc Number:
TM464
CHINA AERO-SCIENCES
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