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  1. Home
  3. A Modified Differential Evolution For Source Localization Using Rss Measurements.
  1. Home
  3. A Modified Differential Evolution For Source Localization Using Rss Measurements.

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A Modified Differential Evolution for Source Localization Using RSS Measurements.

Yunjie Tao1, Lincan Li1, Shengming Chang1

  • 1School of Cyber Science and Engineering, Ningbo University of Technology, Ningbo 315211, China.

Sensors (Basel, Switzerland)
|June 27, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

This study enhances differential evolution (DE) with opposition-based learning (OBL) for wireless sensor network localization. The improved algorithm achieves faster convergence and higher positioning accuracy, outperforming existing methods in challenging environments.

Keywords:
differential evolution (DE)opposition-based learning (OBL)received signal strength (RSS)source localizationwireless sensor networks (WSNs)

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Area of Science:

  • Computer Science
  • Electrical Engineering
  • Network Engineering

Background:

  • Wireless sensor networks (WSNs) face localization challenges due to non-convex and nonlinear maximum likelihood estimation problems using received signal strength (RSS).
  • Differential evolution (DE) is effective for multimodal cost functions but suffers from slow convergence and local optima.
  • Existing localization techniques like semidefinite programming and linear least squares have limitations in complex WSN scenarios.

Purpose of the Study:

  • To propose a novel enhanced differential evolution (DE) algorithm integrated with opposition-based learning (OBL) for improved WSN localization.
  • To address the limitations of conventional DE, specifically suboptimal convergence rates and susceptibility to local optima.
  • To enhance positioning precision and convergence speed in WSN localization using RSS measurements.

Main Methods:

  • Integration of opposition-based learning (OBL) principles into the differential evolution (DE) framework.
  • Introduction of an adaptive scaling factor to balance global exploration and local exploitation.
  • Development of a penalty-augmented cost function to utilize boundary information and eliminate explicit constraint handling.

Main Results:

  • The proposed enhanced DE algorithm demonstrates significant improvements in convergence speed and positioning precision compared to state-of-the-art methods.
  • Comparative evaluations show superiority over semidefinite programming, linear least squares, and simulated annealing.
  • Experimental results validate the algorithm's robustness and effectiveness under various noise conditions and network configurations, especially with sparse anchor nodes.

Conclusions:

  • The proposed opposition-based learning enhanced differential evolution (OBL-DE) offers a superior approach for WSN localization.
  • The adaptive scaling factor and penalty-augmented cost function effectively improve performance in complex and uncertain environments.
  • This enhanced DE method provides a robust and accurate solution for received signal strength-based localization in wireless sensor networks.