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Design of Anti-Disturbance Sparse Arrays for Marine Buoys Using an Improved Sparrow Search Algorithm.

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Název: Design of Anti-Disturbance Sparse Arrays for Marine Buoys Using an Improved Sparrow Search Algorithm.
Autoři: Huang, Linshu, Ye, Huijuan, Li, Hongke, Zhang, Zhigang, You, Yang
Zdroj: Electronics (2079-9292); Feb2026, Vol. 15 Issue 4, p788, 13p
Témata: OCEANOGRAPHIC buoys, BEAMFORMING, INTERFERENCE suppression, RADIO interference, OPTIMIZATION algorithms, MULTI-objective optimization, SPARSE matrices
Abstrakt: To address the performance degradation of antenna beams in marine-towed buoy arrays caused by roll and pitch motions under dynamic sea conditions, this paper proposes a multi-objective sparse array optimization method based on an improved chaotic sparrow search algorithm (CSSA). First, an electromagnetic disturbance model of the array under sea states 1~7 is quantitatively established by coupling wave spectrum theory and buoy dynamics, formulating comprehensive optimization models for both linear and planar arrays under disturbance. Subsequently, within the NSGA-II framework, with main lobe width and peak sidelobe level (PSLL) as dual optimization objectives, a modified sparrow search algorithm integrating density-weighted initialization and Tent chaotic mapping is introduced for efficient solution exploration. Simulation results demonstrate that the proposed method achieves a PSLL below −19.95 dB under sea states 1~3 and effectively suppresses sidelobe elevation and beam distortion even under sea states 4~7 with strong disturbances. This approach significantly enhances the radiation robustness and link stability of sparse arrays in complex marine environments. [ABSTRACT FROM AUTHOR]
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Databáze: Complementary Index
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Abstrakt:To address the performance degradation of antenna beams in marine-towed buoy arrays caused by roll and pitch motions under dynamic sea conditions, this paper proposes a multi-objective sparse array optimization method based on an improved chaotic sparrow search algorithm (CSSA). First, an electromagnetic disturbance model of the array under sea states 1~7 is quantitatively established by coupling wave spectrum theory and buoy dynamics, formulating comprehensive optimization models for both linear and planar arrays under disturbance. Subsequently, within the NSGA-II framework, with main lobe width and peak sidelobe level (PSLL) as dual optimization objectives, a modified sparrow search algorithm integrating density-weighted initialization and Tent chaotic mapping is introduced for efficient solution exploration. Simulation results demonstrate that the proposed method achieves a PSLL below −19.95 dB under sea states 1~3 and effectively suppresses sidelobe elevation and beam distortion even under sea states 4~7 with strong disturbances. This approach significantly enhances the radiation robustness and link stability of sparse arrays in complex marine environments. [ABSTRACT FROM AUTHOR]
ISSN:20799292
DOI:10.3390/electronics15040788