Virtual matrix pencil method for 2-D DOA estimation with a two-nested-shape-array

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• 作者：Hua Shao ; Weimin Su ; Hong Gu ; Jinyu Fan…
• 关键词：2 ; D DOA ; Aperture extension ; Enhanced degrees of freedom ; Two ; nested ; shaped array
• 刊名：Multidimensional Systems and Signal Processing
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：26
• 期：3
• 页码：619-644
• 全文大小：1,293 KB
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• 作者单位：Hua Shao (1)
  Weimin Su (1)
  Hong Gu (1)
  Jinyu Fan (1)
  Jinli Chen (2)
  
  1. Department of Electronic Engineering, Nanjing University of Science and Technology, Nanjing聽, 210094, China
  2. College of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing聽, 210044, China
  
• 刊物类别：Engineering
• 刊物主题：Circuits and Systems
  Electronic and Computer Engineering
  Signal,Image and Speech Processing
  Artificial Intelligence and Robotics
  
• 出版者：Springer Netherlands
• ISSN：1573-0824

文摘

A new two-nested-shape array geometry with three different inter-sensor spacings is designed to achieve enhanced degrees of freedom and doubled aperture length. The virtual matrix pencil method (VMPM) is proposed for this new array to estimate the two-dimensional direction-of-arrival (2-D DOA) of the signal sources, where the three different inter-sensor spacings are used to construct a virtual sparse two-parallel-shape array with much larger number sensors and achieve more accurate DOA estimations. Compared with the improved propagator method, the VMPM has better angle estimation accuracy, and is capable of resolving \(\hbox {O}(P^{2}/32)\) sources with \(P\) sensors. The statistical analysis of these two methods are studied, and the asymptotic variance expressions of their estimation errors are derived. Moreover, these asymptotic variance expressions are simplified for the case of one signal, and the quantitative comparisons are performed to demonstrate the performance advantage of the VMPM. The simulation results verify the validity of the VMPM.