Systems Engineering and Electronics ›› 2026, Vol. 48 ›› Issue (6): 1819-1829.doi: 10.12305/j.issn.1001-506X.2026.06.04

• Electronic Technology • Previous Articles     Next Articles

Target localization for multi-static sonar based on differential evolution algorithm

Qiangqiang WEI1(), Linzhou XU1,*(), Dong HAN2(), Yutong GUO3()   

  1. 1. Department of Underwater Weaponry and Chemical Defense,Dalian Naval Academy,Dalian 116018,China
    2. Department of Information System,Dalian Naval Academy,Dalian 116018,China
    3. College of Meteorology and Oceanography,National University of Defense Technology,Changsha 410073,China
  • Received:2025-04-24 Revised:2025-07-27 Online:2026-06-25 Published:2025-12-08
  • Contact: Linzhou XU E-mail:9154657@qq.com;xubigboy@163.com;332548360@qq.com;guoyutong@nudt.edu.cn

Abstract:

To address the insufficient localization accuracy and stability of traditional closed-form solutions and part optimization algorithms in multi-static sonar target localization with complex noise conditions, the differential evolution (DE) algorithm is employed in this study to solve the localization model. By analyzing the geometric relationships of signal transmission paths, a hyperbolic localization model based on time difference of arrival is established, and the core idea and mathematical procedures of solving the localization model using the DE algorithm are elaborated in detail. Simulation experiments are conducted to determine the key DE algorithm parameters suitable for various noise levels. The results validate that with conditions involving sensor-position, sound-speed, and time-delay measurement errors, the DE algorithm achieves superior localization performance compared to both the simulated annealing algorithm and the Newton iteration method. Moreover, the spatial distribution characteristics of localization errors are investigated. Although the localization accuracy gradually decreases with increasing distance from the geometric center of the sensor network, the algorithm remains effective in achieving target localization. The research demonstrates the feasibility and robustness of applying the DE algorithm for target localization in multi-static sonar systems.

Key words: differential evolution algorithm, multi-static sonar, time difference of arrival, target localization

CLC Number: 

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