首页|Underwater four-quadrant dual-beam circumferential scanning laser fuze using nonlinear adaptive backscatter filter based on pauseable SAF-LMS algorithm

Underwater four-quadrant dual-beam circumferential scanning laser fuze using nonlinear adaptive backscatter filter based on pauseable SAF-LMS algorithm

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The phenomenon of a target echo peak overlapping with the backscattered echo peak significantly undermines the detection range and precision of underwater laser fuzes.To overcome this issue,we propose a four-quadrant dual-beam circumferential scanning laser fuze to distinguish various interfer-ence signals and provide more real-time data for the backscatter filtering algorithm.This enhances the algorithm loading capability of the fuze.In order to address the problem of insufficient filtering capacity in existing linear backscatter filtering algorithms,we develop a nonlinear backscattering adaptive filter based on the spline adaptive filter least mean square(SAF-LMS)algorithm.We also designed an algo-rithm pause module to retain the original trend of the target echo peak,improving the time discrimi-nation accuracy and anti-interference capability of the fuze.Finally,experiments are conducted with varying signal-to-noise ratios of the original underwater target echo signals.The experimental results show that the average signal-to-noise ratio before and after filtering can be improved by more than 31 dB,with an increase of up to 76％in extreme detection distance.

Laser fuzeUnderwater laser detectionBackscatter adaptive filterSpline least mean square algorithmNonlinear filtering algorithm

Guangbo Xu、Bingting Zha、Hailu Yuan、Zhen Zheng、He Zhang

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Ministerial Key Laboratory of ZNDY,Nanjing University of Science and Technology,Nanjing 210094,China

Science and Technology on Electromechanical Dynamic Control Laboratory,Beijing 100081,China

Shanghai Radio Equipment Research Institute,Shanghai 201109,China

2021 Open Project Fund of Science and Technology on Electromechanical Dynamic Control LaboratoryChina Postdoctoral science FoundationPostgraduate Research & Practice Innovation Program of Jiangsu ProvinceJiangsu Funding Program for Excellent Postdoctoral Talent

212-C-J-F-QT-2022-00202021M701713KYCX23_051120220ZB245

2024

10.1016/j.dt.2023.06.011

防务技术
中国兵工学会

防务技术

CSTPCD
影响因子：0.358
ISSN：2214-9147
年,卷(期)：2024.37(7)