Multiple Source Parameter Estimation for Rotating Interferometer Using Circular Array Processing

XIN Jinlong; LIAO Guisheng; YANG Zhiwei; XIE Hu

doi:10.11999/JEIT170217

Volume 40 Issue 2

Feb. 2018

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Article Navigation > Journal of Electronics & Information Technology > 2018 > 40(2): 486-492

XIN Jinlong, LIAO Guisheng, YANG Zhiwei, XIE Hu. Multiple Source Parameter Estimation for Rotating Interferometer Using Circular Array Processing[J]. Journal of Electronics & Information Technology, 2018, 40(2): 486-492. doi: 10.11999/JEIT170217

Citation:

XIN Jinlong, LIAO Guisheng, YANG Zhiwei, XIE Hu. Multiple Source Parameter Estimation for Rotating Interferometer Using Circular Array Processing[J]. Journal of Electronics & Information Technology, 2018, 40(2): 486-492. doi: 10.11999/JEIT170217

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Multiple Source Parameter Estimation for Rotating Interferometer Using Circular Array Processing

doi: 10.11999/JEIT170217

1.
(National Laboratory of Radar Signal Processing, Xidian University, Xi&rsquo
2.
(Xi&rsquo

Funds:

The National Natural Science Foundation of China (61671352, 61231017), The National Science Foundation for Young Scientists of China (61501471), The Foundation of Key Laboratory of Cognitive Radio and Information Processing, Ministry of Education (CRKL160206)

Received Date: 2017-03-17
Rev Recd Date: 2017-11-13
Publish Date: 2018-02-19

Abstract

Abstract

Focus on the problem of phase ambiguity and the issue that it is impossible to estimate the unambiguous angles of multiple sources with the same frequency and time of arrival. An approach for multiple sources parameters estimation with rotating interferometer using virtual circular array processing is proposed in this paper. Firstly, the virtual circular array data is constructed by taking conjugate multiplication of the two channel data received by the rotating interferometer. Then, the virtue linear array data is obtained by employing beamspace transformation, which performs mapping from element-space to beamspace domain. Finally, the unambiguous angles of the multiple emitters are achieved in beamspace domain. Compared with conventional rotating interferometer methods, the proposed method can deal with the problem of unambiguous Direction Of Arrival (DOA) estimation of multiple emitters with only two receiving channels. The validity of the proposed method is verified by the simulation results.
- Multiple source parameter estimation,
- Rotating interferometer,
- Virtual circular array,
- Beamspace transformation,
- Unwrap phase ambiguity

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References(22)

References

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