Article(id=1263818970684056274, tenantId=1146029695717560320, journalId=1263530845441638439, issueId=1263818962224165389, articleNumber=null, orderNo=null, doi=10.19693/j.issn.1673-3185.04536, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1748448000000, receivedDateStr=2025-05-29, revisedDate=1757520000000, revisedDateStr=2025-09-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1779247523231, onlineDateStr=2026-05-20, pubDate=1777478400000, pubDateStr=2026-04-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1779247523231, onlineIssueDateStr=2026-05-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1779247523231, creator=13041195026, updateTime=1779247523231, updator=13041195026, issue=Issue{id=1263818962224165389, tenantId=1146029695717560320, journalId=1263530845441638439, year='2026', volume='21', issue='2', pageStart='1', pageEnd='444', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1779247521215, creator=13041195026, updateTime=1779247861438, updator=13041195026, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1263820389638070544, tenantId=1146029695717560320, journalId=1263530845441638439, issueId=1263818962224165389, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1263820389638070545, tenantId=1146029695717560320, journalId=1263530845441638439, issueId=1263818962224165389, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=184, endPage=191, ext={EN=ArticleExt(id=1263818972089148122, articleId=1263818970684056274, tenantId=1146029695717560320, journalId=1263530845441638439, language=EN, title=Lightweight real-time perception method based on imaging sonar for obstacle avoidance scenarios, columnId=1263818964086436367, journalTitle=Chinese Journal of Ship Research, columnName=Overall Design Technology of Unmanned Underwater Systems, runingTitle=null, highlight=null, articleAbstract=
Objectives To address the challenges posed by high-intensity noise and the structural characteristics of large obstacle targets in underwater sonar imaging, as well as the stringent requirements for lightweight deployment and high inference efficiency of perception algorithms in real-time underwater obstacle avoidance tasks, a semantic segmentation algorithm for sonar images with low computational cost and short inference time is proposed. The method aims to resolve the trade-off between the computational complexity of perception algorithms and the real-time response requirements in obstacle avoidance applications.
Methods Based on an encoder-decoder network architecture, lightweight convolution operations were introduced to significantly reduce computational complexity. In addition, a large-kernel separable attention mechanism was incorporated into the skip connections to enhance feature fusion for obstacle avoidance scenarios. A dataset of 6936 sonar images collected and manually annotated from real environments was used for training and comparative experiments. Furthermore, the obstacle avoidance strategy based on the proposed perception algorithm was validated on the Gazebo simulation platform.
Results The improved algorithm specifically enhances the segmentation accuracy of large targets. Compared with the baseline model, the FLOP and the number of parameters are reduced by 69.2% and 83%, respectively. At the same time, the inference time is shortened by 22.6%, while perception accuracy improves by 10.8%. In addition, simulation experiments verify the effectiveness of the perception algorithm during the obstacle avoidance process, demonstrating that it fully satisfies the requirements of real-time perception tasks in underwater obstacle avoidance scenarios based on forward-looking sonar.
Conclusions The proposed sonar-image-based perception algorithm can effectively meet the obstacle avoidance requirements of unmanned underwater vehicles in onboard operating scenarios and shows promising potential for engineering applications.
, correspAuthors=Lei QIAO, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2026 Chinese Journal of Ship Research. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Haixin LI, Lin YU, Xianghong LI, Lei QIAO), CN=ArticleExt(id=1263819018364903436, articleId=1263818970684056274, tenantId=1146029695717560320, journalId=1263530845441638439, language=CN, title=避障场景下基于成像声呐的轻量化实时感知方法, columnId=1263818964476506641, journalTitle=中国舰船研究, columnName=水下无人系统总体设计技术, runingTitle=null, highlight=null, articleAbstract=
目的 针对水下声呐成像过程所面临的高强度噪声和大目标障碍物结构特性,以及实时水下避障任务对感知算法轻量化部署和高推理效率的严苛要求,提出一种低计算成本和短时推理特性的声呐图像语义分割算法,以应对避障需求下感知算法中计算复杂度与实时响应效率之间的矛盾。
方法 基于编码器−解码器网络结构,通过引入轻量化卷积操作以显著降低计算复杂度,并针对避障场景将大核可分离注意力引入到跳跃连接中。通过对真实采集并标注的6936张声呐图像进行训练与对比,以及在Gazebo仿真平台中对基于感知算法的避障策略进行验证。
结果 改进后的算法针对性地提高了大目标分割精度,相较基础模型,计算量和参数量分别降低69.2%和83%,同时推理时间减少22.6%,感知精度提升10.8%。仿真实验验证了感知算法在避障过程中的有效性,可充分满足基于前视声呐水下避障场景下的实时感知任务需求。
结论 所提基于声呐图像的感知算法可有效满足水下机器人机载场景下的避障需求,具有良好的工程应用前景。
, correspAuthors=乔磊, authorNote=null, correspAuthorsNote=
* 乔磊
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李海鑫,男,2001年生,硕士。研究方向:海洋机器人的感知与避障。E-mail:lihaixin@sjtu.edu.cn
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乔磊,男,1989年生,博士,副教授,博士生导师。研究方向:海洋智能机器人和无人系统。E-mail:qiaolei@sjtu.edu.cn
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乔磊,男,1989年生,博士,副教授,博士生导师。研究方向:海洋智能机器人和无人系统。E-mail:qiaolei@sjtu.edu.cn
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Frontiers in Robotics and AI, 2021, 8: 706646., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1263819019115683863, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, xref=null, ext=[AuthorCompanyExt(id=1263819019128266776, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, companyId=1263819019115683863, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China), AuthorCompanyExt(id=1263819019153432601, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, companyId=1263819019115683863, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=上海交通大学 船舶海洋与建筑工程学院,上海 200240)])], figs=[ArticleFig(id=1263819031656652968, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=EN, label=Fig.1, caption=
Depthwise separable convolution operations, figureFileSmall=M4TFCql4AhhdluwEsS/j5A==, figureFileBig=wHtEXq/nch4si3hVtp4L6Q==, tableContent=null), ArticleFig(id=1263819031883145392, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=CN, label=图1, caption=
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模型训练效果对比, figureFileSmall=o2MyvdajxdPU94c1BtaBmA==, figureFileBig=WqIeE6+TRqutWUn1QfWuNA==, tableContent=null), ArticleFig(id=1263819034588471511, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=EN, label=Fig.4, caption=
Segmentation results on real-world data, figureFileSmall=Il2bgExRqUDU0ZkGNiOIiQ==, figureFileBig=mv6fq6ma6fulK+j3zFSHQQ==, tableContent=null), ArticleFig(id=1263819034848518363, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=CN, label=图4, caption=
实际数据上测试的分割效果, figureFileSmall=Il2bgExRqUDU0ZkGNiOIiQ==, figureFileBig=mv6fq6ma6fulK+j3zFSHQQ==, tableContent=null), ArticleFig(id=1263819035255365856, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=EN, label=Fig.5, caption=
Collaborative mechanism of precise tracking and obstacle avoidance, figureFileSmall=TlZrLsO62OrdAVdqIwHLpw==, figureFileBig=5/8m+5RrgXbdIu2Xi2XrGw==, tableContent=null), ArticleFig(id=1263819035649630438, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=CN, label=图5, caption=
精准跟踪与避障控制协同机制, figureFileSmall=TlZrLsO62OrdAVdqIwHLpw==, figureFileBig=5/8m+5RrgXbdIu2Xi2XrGw==, tableContent=null), ArticleFig(id=1263819036161335533, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=EN, label=Fig.6, caption=
Gazebo simulation environment, figureFileSmall=uY5UCwN50KlTaEgdvL5/AA==, figureFileBig=eXvqY3Wp5ztCBXNhzlS6pg==, tableContent=null), ArticleFig(id=1263819036933087478, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=CN, label=图6, caption=
Gazebo仿真环境, figureFileSmall=uY5UCwN50KlTaEgdvL5/AA==, figureFileBig=eXvqY3Wp5ztCBXNhzlS6pg==, tableContent=null), ArticleFig(id=1263819038837301505, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=EN, label=Fig.7, caption=
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避障场景下障碍物建模可视化, figureFileSmall=u89xdBf3eIo/d9gpLYa3Yg==, figureFileBig=GnkUAYsTEtfOVyGPQ47FhA==, tableContent=null), ArticleFig(id=1263819039583887629, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=EN, label=Tab.1, caption=
Comparison of perception algorithm performance metrics
, figureFileSmall=null, figureFileBig=null, tableContent=
| 性能指标/感知算法 | mIoU/% | Dice/% | Pre/% | Acc/% | Sen/% | Spe/% | FLOP/G | Params/M | 推理时间/s |
| U-Net | 72.30 | 82.75 | 83.40 | 90.71 | 94.90 | 69.39 | 54.99 | 7.766 | 0.062 |
| Attention U-Net | 78.95 | 87.71 | 84.65 | 92.50 | 92.66 | 91.68 | 66.97 | 8.726 | 0.061 |
| 卷积轻量化设计附带跳跃连接改进(a) | 80.08 | 88.41 | 87.37 | 93.45 | 95.35 | 83.78 | 16.94 | 1.32 | 0.048 |
| (a)改进的基础上,部分GRU附带跳跃连接 | 84.56 | 91.33 | 90.17 | 95.10 | 96.31 | 88.94 | 20.26 | 1.40 | 0.065 |
), ArticleFig(id=1263819039932014869, tenantId=1146029695717560320, journalId=1263530845441638439, articleId=1263818970684056274, language=CN, label=表1, caption=
感知算法性能指标比较
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| 性能指标/感知算法 | mIoU/% | Dice/% | Pre/% | Acc/% | Sen/% | Spe/% | FLOP/G | Params/M | 推理时间/s |
| U-Net | 72.30 | 82.75 | 83.40 | 90.71 | 94.90 | 69.39 | 54.99 | 7.766 | 0.062 |
| Attention U-Net | 78.95 | 87.71 | 84.65 | 92.50 | 92.66 | 91.68 | 66.97 | 8.726 | 0.061 |
| 卷积轻量化设计附带跳跃连接改进(a) | 80.08 | 88.41 | 87.37 | 93.45 | 95.35 | 83.78 | 16.94 | 1.32 | 0.048 |
| (a)改进的基础上,部分GRU附带跳跃连接 | 84.56 | 91.33 | 90.17 | 95.10 | 96.31 | 88.94 | 20.26 | 1.40 | 0.065 |
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