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Sensors 2018, 18(8), 2722; https://doi.org/10.3390/s18082722

Joint Design of Space-Time Transmit and Receive Weights for Colocated MIMO Radar

1,†,* , 1,†
,
2,†
and
1,†
1
School of Electronic and Information Engineering, Beihang University, Beijing 100083, China
2
Department of Electronic & Electrical Engineering, University of Sheffield, Sheffield S1 4ET, UK
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 27 June 2018 / Revised: 12 August 2018 / Accepted: 13 August 2018 / Published: 18 August 2018
(This article belongs to the Special Issue Sensor Signal and Information Processing)
Full-Text   |   PDF [4778 KB, uploaded 18 August 2018]   |  

Abstract

Compared with single-input multiple-output (SIMO) radar, colocated multiple-input multiple-output (MIMO) radar can detect moving targets better by adopting waveform diversity. When the colocated MIMO radar transmits a set of orthogonal waveforms, the transmit weights are usually set equal to one, and the receive weights are adaptively adjusted to suppress clutter based on space-time adaptive processing technology. This paper proposes the joint design of space-time transmit and receive weights for colocated MIMO radar. The approach is based on the premise that all possible moving targets are detected by setting a lower threshold. In each direction where there may be moving targets, the space-time transmit and receive weights can be iteratively updated by using the proposed approach to improve the output signal-to-interference-plus-noise ratio (SINR), which is helpful to improve the precision of target detection. Simulation results demonstrate that the proposed method improves the output SINR by greater than 13 dB. View Full-Text
Keywords: colocated multiple-input multiple-output (MIMO) radar; space-time weights; closed-loop system colocated multiple-input multiple-output (MIMO) radar; space-time weights; closed-loop system
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Yu, Z.; Wang, S.; Liu, W.; Li, C. Joint Design of Space-Time Transmit and Receive Weights for Colocated MIMO Radar. Sensors 2018, 18, 2722.

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