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Low-Complexity High-Order Propagator Method for Near-Field Source Localization.

Jianzhong Li1, Yide Wang2, Cédric Le Bastard3,4

  • 1School of Automation, Guangdong University of Technology, Guangzhou 510006, China. jianzhong.li@gdut.edu.cn.

Sensors (Basel, Switzerland)
|December 26, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces an efficient high-order propagator method for localizing near-field sources. The new technique accurately estimates directions of arrival (DOA) and ranges with reduced computational complexity.

Keywords:
cumulanthigh-ordernear-fieldpropagator

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Area of Science:

  • Signal Processing
  • Array Signal Processing
  • Electromagnetics

Background:

  • Near-field source localization is crucial for applications like radar and sonar.
  • Existing methods often involve high computational complexity or limitations in parameter estimation.
  • High-order statistics offer robust performance in complex signal environments.

Purpose of the Study:

  • To propose an efficient high-order propagator method for near-field source localization.
  • To develop a technique that estimates both directions of arrival (DOA) and ranges simultaneously.
  • To reduce the computational burden compared to existing high-order statistics-based methods.

Main Methods:

  • Construction of a non-Hermitian matrix using high-order cumulants of received signals.
  • Generation of orthogonal subspaces from the matrix for parameter estimation.
  • Utilizing a single matrix for separate estimation of DOA and range parameters.

Main Results:

  • The proposed method successfully estimates both DOA and range of near-field sources.
  • Achieves performance comparable to existing high-order statistics methods.
  • Demonstrates a significantly lower computational complexity.

Conclusions:

  • The efficient high-order propagator method provides a computationally advantageous approach for near-field source localization.
  • The technique offers a robust and accurate solution for estimating multiple source parameters.
  • This method advances array signal processing for practical applications requiring precise source localization.