Proceedings of Symposium on Autonomous Underwater Vehicle Technology最新文献_第4页

Multi-frequency shift key and differential phase shift key for acoustic modem 声学调制解调器用多频移频键和差分移相键

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532413

L. LeBlanc, P. Beaujean

引用次数: 3

Study of aperture area reduction and resolution improvement of underwater ultrasonic imaging system 水下超声成像系统孔径缩小与分辨率提高研究

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532431

S. Cheng, Min-Kang Chao

引用次数: 0

Acoustic video-signal transmission system for autonomous underwater vehicle 自主水下航行器声视频信号传输系统

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532434

J. Kojima, Y. Shirasaki

{"title":"Acoustic video-signal transmission system for autonomous underwater vehicle","authors":"J. Kojima, Y. Shirasaki","doi":"10.1109/AUV.1996.532434","DOIUrl":"https://doi.org/10.1109/AUV.1996.532434","url":null,"abstract":"This paper describes the acoustic video-signal transmission system for an autonomous underwater vehicle. The acoustic transmission system can transmit a color image of 160/spl times/120 pixels per one second over 1600 meters in distance. The size and weight of the electronics are very small and light enough to be put in a small AUV. The power consumption, that is less than 20 watts, is small enough for AUVs. The transmission speed is 16,000 BPS. In order to realize this system, quadrature phase-shift-keying, adaptive equalizer, image compression, and error correction code for error free transmissions are employed. A wideband transducer was developed for high-speed transmission. It has a small size, light weight, and high sensitivity. A vertical transmission test was carried out in a depth of 100 meters. As a result of this test, it was found that this system has enough Doppler immunity and can transmit images more than 1600 meters in distance without any errors if the SNR (signal to noise ratio) is greater than 15 dB. In the sea test of our AUV, the images of the sea floor were successfully transmitted. This test was carried out at a depth of 400 meters, and no transmission errors were detected.","PeriodicalId":274258,"journal":{"name":"Proceedings of Symposium on Autonomous Underwater Vehicle Technology","volume":"230 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123878590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Subspace stability in high resolution direction finding and signal enumeration 高分辨率测向和信号枚举的子空间稳定性

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532416

M. Kotanchek, J. Dzielski

{"title":"Subspace stability in high resolution direction finding and signal enumeration","authors":"M. Kotanchek, J. Dzielski","doi":"10.1109/AUV.1996.532416","DOIUrl":"https://doi.org/10.1109/AUV.1996.532416","url":null,"abstract":"Subspace-based array signal processing methods (e.g. MUSIC, ESPRIT, GEESE, etc.) implicitly require an accurate partitioning of the sampled data into signal and orthogonal (\"noise\") subspaces-in essence, an accurate estimate of the number of independent signals arriving at the array. Information-theoretic enumeration approaches have been proposed to avoid ad hoc criteria. Unfortunately, the models and assumptions used for information-theoretic approaches are often not valid for underwater environments due to wavefront spreading, array element coupling, flow noise, distributed sources, etc. To relax the enumeration criteria, we exploit the stability of the signal subspace for persistent signal sources coupled with the a priori knowledge of the array manifold. In-water sonar data is used to demonstrate the effectiveness of this approach in situations where conventional information-theoretic criteria fail. Although a variety of formulations are possible which exploit the model validity assessment and subspace stability, the proposed SSET (Subspace Stability Exploitation Tracker) approach presented is attractive due to the relatively low computational demands. Essentially, the approach involves applying multiple hypothesis target tracking algorithms to the movement of potential signal roots in the complex plane derived from matrix-shifting implementations of subspace DOA estimation algorithms. Due to the relatively low computational demands and indifference to the noise covariance structure, SSET is appropriate for real-time in-water implementation.","PeriodicalId":274258,"journal":{"name":"Proceedings of Symposium on Autonomous Underwater Vehicle Technology","volume":"15 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123045507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Architecture for an autonomous reconfigurable intelligent control system (ARICS) 自主可重构智能控制系统(ARICS)体系结构

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532421

A. Yavnai

{"title":"Architecture for an autonomous reconfigurable intelligent control system (ARICS)","authors":"A. Yavnai","doi":"10.1109/AUV.1996.532421","DOIUrl":"https://doi.org/10.1109/AUV.1996.532421","url":null,"abstract":"ARICS is an embedded autonomous mission controller (AMC), designed to be used onboard highly autonomous vehicles (AV). It is designed to meet the requirements for extended autonomous capabilities. Such capabilities are required by long range, long endurance AVs, such as autonomous underwater vehicles-AUVs. Although the architecture is kept as generic and common as possible, the specific functional processing modules (FPMs) may be different for various vehicles and applications. ARICS is designed to provide the AUV with the following onboard, real-time, self-contained capabilities: a) Goal-directed and event-driven reactive mission and system management; b) Plan updating, adjusting, or replanning; c) Complete in-mission, on-the-move, planning; d) Context-sensitive and event-driven exception handling; e) Fault management, error recovery, and module/functionality reconfiguration; f) Coordinating the AUV's cooperative operation with other AUVs, when operating in cooperative mode; g) Optimal resource management. This paper describes the architecture of ARICS, the architecture of the Mission Manager, the architecture of the main FPMs, the data flow between the processes, as well as, design principles and implementation issues.","PeriodicalId":274258,"journal":{"name":"Proceedings of Symposium on Autonomous Underwater Vehicle Technology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130067911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Control of an autonomous underwater vehicle testbed using fuzzy logic and genetic algorithms 基于模糊逻辑和遗传算法的自主水下航行器试验台控制

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532451

J. Guo, S. Huang

引用次数: 12

Geometric methods for robust stabilization of autonomous underwater vehicles 自主水下航行器鲁棒稳定的几何方法

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532449

Naomi Ehrich Leonard

引用次数: 6

Significance of envelope detection in underwater acoustic imaging systems 包络检测在水声成像系统中的意义

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532415

A. Trucco, V. Murino

引用次数: 2

Sensors for a forward-looking high resolution AUV sonar 用于前视高分辨率AUV声纳的传感器

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532410

F. Nussbaum, G. T. Stevens, J. G. Kelly

引用次数: 11

The optimal control of a flexible hull robotic undersea vehicle propelled by an oscillating foil 摆动翼型柔性船体机器人水下航行器的最优控制

Proceedings of Symposium on Autonomous Underwater Vehicle Technology Pub Date : 1996-06-02 DOI: 10.1109/AUV.1996.532833

David S. Barrett, M. Grosenbaugh, M. S. Triantafyllou

引用次数: 170