中国光学（中英文）2024，Vol.17Issue(3)：560-571,12.DOI:10.37188/CO.2023-0141
复杂水文微弱多目标激光探测仿真与实验
Simulation and experiment of weak multi-target laser detection in complex hydrology
摘要
Abstract
Investigating the impact of water quality,target characteristics,and target distance on underwater laser detection is crucial to assessing the effectiveness of laser detection for weak targets in complex coastal water bodies.We examine the theoretical and practical significance of understanding these factors in under-water laser detection.In this study,a laser detection model for detecting weak underwater targets is estab-lished.Monte Carlo simulation is used to verify the detection performance of weak multi-target laser ranging under different turbidities.The laser backscattering echo signals of weak targets at different distances are simulated,and the backscattering echo characteristics of multiple targets with various reflection coefficients are analyzed.Additionally,a smart and portable laser detection system for detecting weak underwater targets has been designed and developed.Laboratory and field lake environment tests were conducted to detect and range for multi-target.In a near-shore lake with a turbidity of 12.87 NTU,the system can effectively detect 3-4 mixed small target groups.These groups have different low reflection coefficients and diameters vary-ing from 80 to 400 μm,all within a range of 10 meters.The average measurement error is±0.11 m,which is consistent with the theoretical simulation results.The research results serve as a guide for computing links,designing systems,and optimizing parameters for detecting weak underwater multi-targets using blue and green lasers.Furthermore,the results assist in the engineering practice of detecting underwater obstacles in offshore turbid waters.关键词
激光探测与测距/微弱多目标/复杂水文/蒙特卡洛Key words
laser detection and ranging/weak multi-target/complex hydrology/Monte Carlo分类
信息技术与安全科学引用本文复制引用
宗思光,杨劭鹏,张鑫,彭丹,段子科,陈报..复杂水文微弱多目标激光探测仿真与实验[J].中国光学（中英文）,2024,17(3):560-571,12.基金项目
国防科研基金(No.2019-JCJQ-JJ-056)Supported by The National Defense Foundation of China(No.2019-JCJQ-JJ-056) （No.2019-JCJQ-JJ-056）
