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Reconfigurable Antenna Array Direction Finding System Based on a Fast Search Algorithm.

Chunxi Liu1, Dongliang Peng1, Zhikun Chen1

  • 1School of Automation, Hangzhou Dianzi University, Hangzhou 310018, China.

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Summary
This summary is machine-generated.

This study introduces a reconfigurable antenna array for faster direction finding (DOA). The system dynamically loads antennas, reducing electromagnetic interference and improving search efficiency.

Keywords:
direction of arrival (DOA) estimationfast DOA search algorithmmicrowave switchesreconfigurable antenna array

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Signal Processing

Background:

  • Traditional antenna arrays face signal crosstalk and distortion due to simultaneous sensor operation.
  • Existing direction-finding algorithms require extensive spectral search, leading to significant time consumption.
  • Electromagnetic compatibility issues are prevalent in conventional antenna array systems.

Purpose of the Study:

  • To develop a reconfigurable antenna array system for enhanced direction finding (DOA).
  • To address limitations of traditional systems, including signal crosstalk and slow search times.
  • To introduce an improved transform domain (TD) search algorithm for faster DOA estimation.

Main Methods:

  • Construction of a reconfigurable antenna array hardware structure using microwave switches.
  • Implementation of an improved transform domain (TD) search algorithm.
  • Validation through real-world experiments and detailed simulations.

Main Results:

  • The reconfigurable system dynamically loads antennas, mitigating electromagnetic compatibility problems.
  • The improved TD search algorithm significantly reduces DOA search time compared to conventional methods.
  • Experimental results confirm the system's effectiveness and simulated advantages.

Conclusions:

  • The reconfigurable antenna array offers a solution to the limitations of traditional DOA systems.
  • Dynamic antenna loading and an improved TD algorithm enable faster and more reliable direction finding.
  • The proposed system demonstrates practical advantages for electromagnetic compatibility and search efficiency.