SONAR

作品数：108被引量：116H指数：5
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Sonar Echo Simulation Technology Based on Array Phase Weight Estimation
《Journal of Communications and Information Networks》2024年第4期320-329,共10页Jun Liu Shenghua Gong Tong Zhang Wenxue Guan Zhenxiang Zhao 
supported by the Joint Funds of the National Natural Science Foundation of China under Grant U22A2009;in part by the National Key Research and Development Program under Grant 2021YFC2803000.
Sonar locates underwater targets by receiving reflected sound waves.However,the complex marine environment makes it difficult to set targets in appropriate locations and conditions.The sonar echo simulator has the fun...
关键词：sonar echo simulation DOA estimation underwater backscatter BEAMFORMING 
Underwater object detection by fusing features from different representations of sonar data
《Frontiers of Information Technology & Electronic Engineering》2023年第6期828-843,共16页Fei WANG Wanyu LI Miao LIU Jingchun ZHOU Weishi ZHANG 
supported by the National Natural Science Foundation of China(No.62103072);the Postdoctoral Science Foundation of China(No.2021M690502)。
Modern underwater object detection methods recognize objects from sonar data based on their geometric shapes.However,the distortion of objects during data acquisition and representation is seldom considered.In this pa...
关键词：Underwater object detection Sonar data representation Feature fusion 
Measuring the geometry of a developing scour hole in clear-water conditions using underwater sonar scanning被引量：4
《International Journal of Sediment Research》2020年第1期105-114,共10页Ashley Rogers Costantino Manes Toru Tsuzaki 
supported by a joint partnership between Network Rail and the University of Southampton;support of“Compagnia di San Paolo”who partly funded this work through the scheme "Attrarre docenti di qualita tramite Starting Grant"
A novel scanning technique using a rotating-head sonar profiler attached to a slider mechanism is presented as a means to directly measure the complex erosion and deposition features of local scour holes developing in...
关键词：Local SCOUR SCOUR volume CLEAR water SONAR SCOUR hole GEOMETRY SIMILARITY 
Underwater sonar target imaging via compressed sensing with M sequences被引量：1
《Science China Earth Sciences》2016年第12期111-120,共10页Huichen YAN Jia XU Xiang-Gen XIA Xudong ZHANG Teng LONG 
supported in part by National Natural Science Foundation of China (Grant No. 61271391);111 Project of China Ministry of Education (MOE) (Grant No. B14010);New Century Excellent Talents Supporting Plan of China MOE (Grant No. NCET-13-0049);Ministry Research Foundation (Grant No. 9140A21050114HT05338);Outstanding Youth Teacher Training Plan of BIT (Grant No. BIT-JC-201205)
Due to the low sound propagation speed, the tradeoff between high azimuth resolution and wide imaging swath has severely limited the application of sonar underwater target imaging. However, based on compressed sensing...
关键词：SONAR high-resolution imaging compressed sensing M sequence coherence parameter restricted isometry property 
Detection of Underwater Objects by Adaptive Threshold FCM Based on Frequency Domain and Time Domain
《国际计算机前沿大会会议论文集》2015年第1期57-58,共2页Xingmei Wang Guangyu Liu Lin Li Shouxuan Jiang 
This work was supported by the National Natural Science Foundation of China (41306086), technology innovation talent special foundation of Harbin (2014RFQXJ105) and Fundamental Research Funds for the Central Universities (No.HEUCFR1121, HEUCF100606).
According to the characteristics of sonar image data with big data feature, In order to accurately detect underwater objects of sonar image, a novel adaptive threshold FCM (Fuzzy Clustering Algorithm, FCM) based on fr...
关键词：SONAR image CHARACTER frequency DOMAIN Block k-means CLUSTERING Fuzzy CLUSTERING algorithm Adaptive threshold 
Application of A* Algorithm for Real-time Path Re-planning of an Unmanned Surface Vehicle Avoiding Underwater Obstacles被引量：9
《Journal of Marine Science and Application》2014年第1期105-116,共12页Thanapong Phanthong Toshihiro Maki Tamaki Ura Takashi Sakamaki Pattara Aiyarak 
supported by the Ministry of Science and Technology of Thailand
This paper describes path re-planning techniques and underwater obstacle avoidance for unmanned surface vehicle(USV) based on multi-beam forward looking sonar(FLS). Near-optimal paths in static and dynamic environment...
关键词：UNDERWATER OBSTACLE AVOIDANCE real-time pathre-planning A＊ ALGORITHM SONAR image unmanned surface vehicle 
Underwater Simultaneous Localization and Mapping Based on Forward-looking Sonar被引量：1
《Journal of Marine Science and Application》2011年第3期371-376,共6页Tiedong Zhang Wenjing Zeng Lei Wan 
Supported by the National Natural Science Foundation of China(51009040);National Defence Key Laboratory of Autonomous Underwater Vehicle Technology(2008002);Scientific Service Special Funds of University in China(E091002)
A method of underwater simultaneous localization and mapping （SLAM） based on forward-looking sonar was proposed in this paper. Positions of objects were obtained by the forward-looking sonar, and an improved associa...
关键词：simultaneous localization and mapping （SLAM） looking forward sonar extended Kalman filter （EKF） 
Underwater Digital Terrain Model with GPS-aided High-resolution Profile-scan Sonar Images
《Journal of Shanghai Jiaotong university(Science)》2008年第2期233-238,共6页周拥军 寇新建 
The whole procedures of underwater digital terrain model (DTM) were presented by building with the global positioning system (GPS) aided high-resolution profile-scan sonar images.The algorithm regards the digital imag...
关键词：digital terrain model high-resolution sonar Hough transform neighborhood gray-level co-occurrence matrix 
Sonar Image Processing System for an Autonomous Underwater Vehicle(AUV)
《High Technology Letters》1995年第1期71-75,共5页Wen, X.  Yuling, W.  Weiqing, Zh. 
the High Technology Research and Development Programme of china.
Sonar image processing system is an important intelligent system of Autonomous Un-derwater Vehicle.Based on TMS320C30 high speed DSP,it is used to realize sonar imagecompression and underwater object detections includ...
关键词：AUTONOMOUS UNDERWATER VEHICLE SONAR image processing Digital SIGNAL PROCESSOR 
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