共查询到17条相似文献,搜索用时 937 毫秒
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意欲从深海空间寻觅日本列岛未来的ARENA[1](Advanced Real-Time Earth Monitoring Network in the Area)计划[1,3],是利用敷设于海底的缆式网络,及星罗棋布的配置于海底网络上的观测器,开展海底勘察.该计划旨在通过基于长时效的实时监控海底网络所及海域、海底的综合性海缆网络系统,构筑起海洋学、地球物理学、地震学,以及海水资源、海底能源开采等多学科、跨领域的试验验证、科学研究、深海海洋工程应用平台[2].它的建成,将实现建立在基于海洋作业船、深潜器(ROV、AUV)等多种水下、海底作业技术基础上的跨世纪深海空间站的梦想. 相似文献
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为了对深海进行立体、连续和长期观测,设计一种新型的深海监测平台,即深海通讯浮标蜂窝集装式传输平台,介绍平台工作过程及结构、功能,以及各组成系统的作用,期望投入使用,用以实现深海至水面、水面至卫星的监测信号传递. 相似文献
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论文介绍了国外海底光缆传输网络的最新研究和应用情况,提出了海底光缆传输网络的拓扑结构,设计了系统的总体结构和重点研究设备。海底光缆传输网络将海底分散的海洋环境观测、地质勘探等科学研究节点组网,实现各类海洋科学信息至岸基的综合传输与交换,具有高速、大容量的通信特点,是水下信息传输的重要手段,为深海科学研究提供关键技术支撑。 相似文献
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采用编码技术和网络传输技术,设计了应用于船舶视频监视的数字视频网络监控系统.该系统以船舶内部的TCP/IP网络为载体,可以实现全船范围的宽带一体化网络视频监控.实验测试结果表明监控图像画面清晰,录像回放质量明显提高,能够充分满足船舶操控对视频监视系统的要求. 相似文献
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Silvana N.R. Birchenough Sin E. Boyd Roger A. Coggan David S. Limpenny William J. Meadows Hubert L. Rees 《Journal of Marine Systems》2006,62(3-4):204
This study presents the results of a trial assessment based on a combination of sampling techniques at a dredged material disposal site located off the North East coast of the UK, over 2001 to 2004. The site was surveyed with a high-resolution sidescan sonar system producing a mosaic with 100% coverage of the survey area. Benthic communities and sediments were ground-truthed using a Hamon grab with a video camera. Additionally, the area was also sampled in 2003 with a Sediment Profile Imaging (SPI) camera, which complemented other techniques by providing in situ information on sediment quality, and biogenic activities. An assessment is made of the benefits of combining the results from conventional methods, principally using grab samples, with those from acoustic techniques and optical imaging devices to determine seafloor and macrobenthic conditions. This information has the potential to contribute to the enhancement of routine monitoring programmes within UK waters. 相似文献
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随着水下航行器技术的发展及探雷等特殊场合的需求,利用水下小平台探测海底小目标的方式逐渐受到重视,本文依据参量发射阵理论,结合参量阵的优势、截断参量阵的特点,设计了一种应用于海底小目标近距离探测的系统,测试该探测系统在近距离的特性,进行沉底及掩埋目标的探测实验,结果表明,该参量阵系统能够实现海底小目标近距离探测,在现有条件下所做的探索工作具有一定的工程参考价值. 相似文献
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Phytodetritus deposited on the Antarctic shelf and upper slope: its relevance for the benthic system
Underwater photography was used to ascertain regional, seasonal, interannual or depth dependent variations in the occurrence of phytodetritus on the Antarctic seafloor in order to explain the patchy distribution patterns of the benthos. The information was obtained from an average of 63 photographs taken at each of 76 stations in the Weddell and Lazarev Sea along a 2300 km coastline during four austral summers between 1986 and 1991. In areas where the shelf was broader than 80 km, the sediment showed a significantly higher phytodetritus cover than on the narrower shelf. This can probably be explained by the lower current velocity on the broader shelf. Significantly higher percentages of phytodetritus cover were also found on the seafloor in areas where the megabenthos cover was relatively low. These results indicate that in areas with a low current velocity, organic particles sink relatively fast onto the seafloor where they are available mainly for deposit feeders. The generally more abundant filter feeders are better adapted to a higher current velocity which transports the particles mainly horizontally over longer periods. No significant relationships were found between other physical parameters and the occurrence of phytodetritus. Therefore, the results are also discussed under the aspect of a weak pelagic–benthic coupling, effected by the long-term development of the benthic system. 相似文献
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Jun Han Akira Asada Tamaki Ura Yukinaga Yamauchi Yasunobu Yagita Toshihiko Maki 《Journal of Marine Science and Technology》2007,12(3):183-189
A new and effective seafloor geodetic observing robot network system, which consists of several submarine stations situated
in regions susceptible to interplate earthquakes, has been proposed and is under construction in Japan. Each station, equipped
with an autonomous underwater vehicle (AUV) dock, is connected to a land facility by cables providing power and communication.
Near the AUV dock, three or four seafloor reference stations will be set up for geodetic observations. In this system, a noncontact
power supply is required for a battery-driven AUV to conduct observations for extended durations. A small, intelligent, efficient,
high-power noncontact feed system of 400 W capacity with an inverting efficiency of 77% in salt water has been developed.
It has been shown to be effective in a water tank experiment in which the noncontact power supply automatically fed power
to an AUV for 3 days. 相似文献
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基于DirectShow技术,在Windows平台下构建测量船用钢板三维尺寸的图像采集系统,为大尺寸物件的测量提供了一种信息采集方案。首先分析了DirectShow技术基本体系,接着介绍了该系统的应用环境整体布局以及采集系统总体设计方案,其次通过对常见的视频采集卡进行分析,给出了针对USB摄像头,基于MFC框架的图像采集系统实现过程,包括设备Filter的构建,Filter Graph结构设计,开发了本系统所用到的抓图Filter,实现对应用环境画面的实时监控和采集,通过实验表明设计方案的可行性和正确性。 相似文献
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