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Development and experimentation of a satellite buoy network for real-time acoustic localization of whales in the St. Lawrence

机译:圣劳伦斯实时原理定位卫星浮标网络的开发与实验

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An integrated system of intelligent acoustic buoys have been developed to detect, identify and localize whales in real-time in their environment and communicate this information to land-based stations or ships via satellite and Internet, and RF communications. The low-cost portable buoy network can be used as a marine mammal observatory to gather continuous space-time series of vocalizing animals over large basins, or as early warning systems for improving whale protection on navigation routes or around moving or fixed platforms during threatening high-level acoustic activity. The unit buoy is powered by two 12-V batteries connected to solar panels. The processor is an 800 MHz Pentium III PC equipped with 400-MB fast memory and a 100-GB hard disk. The clock is synchronized with the embarked GPS. Data from two georeferenced hydrophones equipped with depth and temperature sensors are flowing to a 16-bit 500-kHz A/D-DSP board. Two-way communication is through 900-MHz and an Iridium satellite modems. Specific whales' target calls are detected in time-frequency domain after adaptive noise-filtration. The selected master buoy collects the precisely time-tagged detections from all units via RF communication, and locates the calling whales from hyperbolic and isodiachron-Monte Carlo fixing algorithms. A simple tracking algorithm then builds the individual tracks. All acoustic data or users' selected portions of them can be stored on the hard disk. The system is designed to accommodate future developments and be easily adapted to various tasks. It can be deployed as a drifting network or anchored to the bottom, as well as from the ice sheet. First sea trials will be in August 2006 in the St. Lawrence.
机译:已经开发了一种智能声学浮标的集成系统来检测,在环境中实时检测和定位鲸鱼,并通过卫星和互联网和RF通信将这些信息传达给基于陆基的站或船舶。低成本便携式浮标网络可用作海洋哺乳动物天文台,以收集大型盆地的连续空间时间序列,或作为提高导航路线或在威胁期间移动或固定平台周围的鲸鱼保护的预警系统-Level声学活动。单位浮标由连接到太阳能电池板的两个12-V电池供电。处理器是800 MHz Pentium III PC,配备400 MB快速存储器和100 GB硬盘。时钟与开始的GPS同步。配备深度和温度传感器的两个地理学方法的数据流到了16位500 kHz A / D-DSP板。双向通信是通过900-MHz和铱星卫星调制解调器。在自适应噪声过滤之后,在时频域中检测特定的鲸鱼目标呼叫。所选主浮标通过RF通信收集来自所有单元的精确时间标记检测,并找到来自双曲线和ISOdia-Monte Carlo固定算法的呼叫鲸。然后,简单的跟踪算法构建各个轨道。它们的所有声学数据或用户的所选部分都可以存储在硬盘上。该系统旨在适应未来的发展,并轻松适应各种任务。它可以部署为漂移网络或锚定到底部,以及冰盖。第一届海洋试验将于2006年8月在圣劳伦斯。

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