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首页> 外文会议>Information Systems for Navy Divers and Autonomous Underwater Vehicles Operating in Very Shallow Water and Surf Zone Regions >Integrated DGPS/acoustic system for underwater positioning
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Integrated DGPS/acoustic system for underwater positioning

机译：集成的DGPS /声学系统，用于水下定位

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Abstract: Datasonics, in conjunction with the French company ACSA, has developed a precise underwater positioning system with multi-user capability. The standard involves deployment of three or four lightweight, low cost buoys, which can be either anchored or drifting, depending on water depth, environmental conditions and mission requirements. Each buoy is equipped with a GPS positioning unit, an acoustic transmitter/receiver, and a 900 MHz non-FCC licensed RF link to a support vessel. Underwater divers, AUVs, or ROVs are equipped with a programmed acoustic modem which transmits a unique coded signal. Different modes of operation are offered. In the basic mode, the position computation is done aboard a surface platform. As an alternative, an acoustic modem can be used, in cases where the underwater mobile needs precise guidance. In such cases, coordinates, heading setting or range and bearing information can be transmitted to the mobile using a downward acoustic link. In the basic mode, each buoy transmits its current GPS position, along with the range and depth of each underwater vehicle or diver, to the support vessel where each vehicle or diver position is computed and displayed. Using a standard DGPS receiver, with acoustic range computation compensated for propagation velocity variation, underwater position computation accuracy approaches that of the surface GPS position accuracy. !5
机译：摘要：Datasonics与法国ACSA公司合作开发了一种具有多用户功能的精确水下定位系统。该标准涉及部署三个或四个轻便，低成本的浮标，这些浮标可以锚定或漂移，具体取决于水深，环境条件和任务要求。每个浮标都配备有GPS定位单元，声音发射器/接收器，以及一条900 MHz非FCC许可的RF链接到支持船。水下潜水员，AUV或ROV配备了经过编程的声学调制解调器，该调制解调器可以传输唯一的编码信号。提供了不同的操作模式。在基本模式下，位置计算是在地面平台上完成的。作为替代方案，在水下移动设备需要精确引导的情况下，可以使用声学调制解调器。在这种情况下，可以使用向下的声音链路将坐标，航向设置或范围以及方位信息传输到移动设备。在基本模式下，每个浮标将其当前的GPS位置以及每个水下车辆或潜水员的范围和深度传输到支持船，在此计算并显示每个车辆或潜水员的位置。使用标准的DGPS接收机，通过对声程进行补偿以补偿传播速度的变化，水下位置的计算精度接近表面GPS位置的精度。 ！5

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