Improving the coverage range of ultrasound-based localization systems
Improving the coverage range of ultrasound-based localization systems
复制标题
提高超声波定位系统的覆盖范围
DOI：
10.1109/wcnc.2011.5779202
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
D. Ostry
中科院分区：
文献类型：
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作者：
P. Misra;Sanjay Jha;D. Ostry
位置感知有利于室内环境中丰富的应用，例如资产跟踪，资源发现，交互式虚拟游戏，位置感知传感器网络，人类和机器人的导航支持等。存在大量的位置传感系统，但由于传感设备的范围和覆盖范围有限，它们大多在密集的室内部署下运行。在本文中，我们专注于提高覆盖范围-定位的一个关键先决条件。我们使用现有Cricket [1]系统的实验揭示了它的许多局限性。我们克服了这些障碍，并提出了一个定制设计的全向超声波接收器单元集成与现有的板球微尘的设计，实施和评估。与原始Cricket相比，修改后的Cricket系统将覆盖范围提高了20%。这些经验教训还提供了对各种因素如何影响范围特性的分析和系统一级的理解。
Location awareness is of benefit to a rich set of applications in indoor environments such as asset tracking, resource discovery, interactive virtual games, location-aware sensor networking, navigation support for humans and robots, etc. There exists a vast array of location sensing systems, but they mostly operate under dense indoor deployment due to the limited range and coverage of the sensing device. In this paper, we focus on improving coverage range - a critical prerequisite for localization. Our experiments using the existing Cricket [1] system reveals many of its limitations. We overcome these hurdles, and present the design, implementation and evaluation of a custom designed omni-directional ultrasonic receiver unit integrated with the existing Cricket motes. The modified Cricket system improves the coverage range by ≈20% in comparison to the original Cricket. The lessons and experiences also provide an analytical and system-level understanding of how various factors affect the ranging characteristics.