Beamspace Root-MUSIC Algorithm for Joint DOD DOA Estimation in Bistatic MIMO Radar

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• 作者：Guimei Zheng (1)
  
• 关键词：Bistatic MIMO radar ; DOA estimation ; DOD estimation ; RootMUSIC ; Beamspace
• 刊名：Wireless Personal Communications
• 出版年：2014
• 出版时间：April 2014
• 年：2014
• 卷：75
• 期：4
• 页码：1879-1889
• 全文大小：510 KB
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• 作者单位：Guimei Zheng (1)
  
  1. National Lab of Radar Signal Processing, Xidian University, Xi鈥檃n, 710071, People鈥檚 Republic of China
  
• ISSN：1572-834X

文摘

The computational complexity for the direction of departure (DOD) and direction of arrival (DOA) estimation in bistatic MIMO radar increases very rapidly with the number of sensors. To reduced computational complexity, a beamspace Root-MUSIC algorithm for joint DOD and DOA is proposed in this paper. Ingenuous mathematical manipulations utilizing the properties of common out-of-band nulls offered by discrete Fourier transform matrix beamformer are proposed to restore the Vandermonde structure with a reduced degree, which is lost in beamspace transformation for both the transmit array and the receive array. Then the DOD and DOA can be estimated via polynomials root finding procedure. The proposed algorithm can work in reduced dimension beamspace data and reduced degree polynomial root finding procedure in the final stage of Root-MUSIC. Moreover, automatic paring between the DODs and DOAs can be obtained. Simulation results demonstrate that the effectiveness of the proposed algorithm.